Redirect stdout to NUL if the log file can't be opened

We don't have a stdout to _dup2() into when run as a service.

This reverts commit e9ddf91157.

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "GS-IPv6-Forwarder"]
+	path = GS-IPv6-Forwarder
+	url = https://github.com/moonlight-stream/GS-IPv6-Forwarder.git

README.md

@@ -1,2 +1,13 @@
-# Internet-Streaming-Helper
-Automatically configure and troubleshoot your router for using Moonlight over the Internet
+# Moonlight Internet Hosting Tool
+* Enable Moonlight streaming from your PC over the Internet with no configuration required
+* Troubleshoot streaming issues with the included testing tool
+
+# How to Use
+1. Install the MSI package from the [GitHub Releases Page](https://github.com/moonlight-stream/Internet-Streaming-Helper/releases) on your host gaming PC.
+2. If neccessary, run the Moonlight Internet Streaming Tester installed with this software.
+
+# Technical Features
+- Supports all major port forwarding protocols (UPnP, NAT-PMP, and PCP) for the best possible router compatibility
+- Supports streaming on IPv4-only, IPv6-only, and dual-stack Internet connections
+- Supports successful forwarding in double-NAT environments by configuring port mappings on all NATs found on the way to the Internet
+- Supports forwarding on Carrier-Grade NATs (CGNs) by directly using PCP when the ISP doesn't implement UPnP-PCP interoperability

libs/include/miniupnpc/miniupnpc.h

@@ -1,9 +1,9 @@
-/* $Id: miniupnpc.h,v 1.53 2018/05/07 11:05:16 nanard Exp $ */
+/* $Id: miniupnpc.h,v 1.59 2021/09/28 21:39:17 nanard Exp $ */
 /* vim: tabstop=4 shiftwidth=4 noexpandtab
  * Project: miniupnp
  * http://miniupnp.free.fr/
  * Author: Thomas Bernard
- * Copyright (c) 2005-2018 Thomas Bernard
+ * Copyright (c) 2005-2021 Thomas Bernard
  * This software is subjects to the conditions detailed
  * in the LICENCE file provided within this distribution */
 #ifndef MINIUPNPC_H_INCLUDED
@@ -20,7 +20,7 @@
 #define UPNPDISCOVER_MEMORY_ERROR (-102)
 
 /* versions : */
-#define MINIUPNPC_VERSION	"2.1"
+#define MINIUPNPC_VERSION	"2.2.3"
 #define MINIUPNPC_API_VERSION	17
 
 /* Source port:

libs/include/miniupnpc/miniupnpc_socketdef.h

@@ -7,7 +7,7 @@
 #ifndef MINIUPNPC_SOCKETDEF_H_INCLUDED
 #define MINIUPNPC_SOCKETDEF_H_INCLUDED
 
-#ifdef _MSC_VER
+#ifdef _WIN32
 
 #define ISINVALID(s) (INVALID_SOCKET==(s))
 

libs/include/miniupnpc/miniupnpctypes.h

@@ -1,13 +1,15 @@
 /* $Id: miniupnpctypes.h,v 1.1 2011/02/15 11:10:40 nanard Exp $ */
 /* Miniupnp project : http://miniupnp.free.fr/ or http://miniupnp.tuxfamily.org
  * Author : Thomas Bernard
- * Copyright (c) 2011 Thomas Bernard
+ * Copyright (c) 2021 Thomas Bernard
  * This software is subject to the conditions detailed in the
  * LICENCE file provided within this distribution */
 #ifndef MINIUPNPCTYPES_H_INCLUDED
 #define MINIUPNPCTYPES_H_INCLUDED
 
-#if (defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L)
+/* Use unsigned long long when available :
+ * strtoull is C99 */
+#if defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L
 #define UNSIGNED_INTEGER unsigned long long
 #define STRTOUI	strtoull
 #else

libs/include/miniupnpc/portlistingparse.h

@@ -0,0 +1,65 @@
+/* $Id: portlistingparse.h,v 1.10 2014/11/01 10:37:32 nanard Exp $ */
+/* MiniUPnP project
+ * http://miniupnp.free.fr/ or http://miniupnp.tuxfamily.org/
+ * (c) 2011-2015 Thomas Bernard
+ * This software is subject to the conditions detailed
+ * in the LICENCE file provided within the distribution */
+#ifndef PORTLISTINGPARSE_H_INCLUDED
+#define PORTLISTINGPARSE_H_INCLUDED
+
+#include "miniupnpc_declspec.h"
+/* for the definition of UNSIGNED_INTEGER */
+#include "miniupnpctypes.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* sample of PortMappingEntry :
+  <p:PortMappingEntry>
+    <p:NewRemoteHost>202.233.2.1</p:NewRemoteHost>
+    <p:NewExternalPort>2345</p:NewExternalPort>
+    <p:NewProtocol>TCP</p:NewProtocol>
+    <p:NewInternalPort>2345</p:NewInternalPort>
+    <p:NewInternalClient>192.168.1.137</p:NewInternalClient>
+    <p:NewEnabled>1</p:NewEnabled>
+    <p:NewDescription>dooom</p:NewDescription>
+    <p:NewLeaseTime>345</p:NewLeaseTime>
+  </p:PortMappingEntry>
+ */
+typedef enum { PortMappingEltNone,
+       PortMappingEntry, NewRemoteHost,
+       NewExternalPort, NewProtocol,
+       NewInternalPort, NewInternalClient,
+       NewEnabled, NewDescription,
+       NewLeaseTime } portMappingElt;
+
+struct PortMapping {
+	struct PortMapping * l_next;	/* list next element */
+	UNSIGNED_INTEGER leaseTime;
+	unsigned short externalPort;
+	unsigned short internalPort;
+	char remoteHost[64];
+	char internalClient[64];
+	char description[64];
+	char protocol[4];
+	unsigned char enabled;
+};
+
+struct PortMappingParserData {
+	struct PortMapping * l_head;	/* list head */
+	portMappingElt curelt;
+};
+
+MINIUPNP_LIBSPEC void
+ParsePortListing(const char * buffer, int bufsize,
+                 struct PortMappingParserData * pdata);
+
+MINIUPNP_LIBSPEC void
+FreePortListing(struct PortMappingParserData * pdata);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif

libs/include/miniupnpc/upnpdev.h

@@ -1,8 +1,8 @@
-/* $Id: upnpdev.h,v 1.1 2015/08/28 12:14:19 nanard Exp $ */
+/* $Id: upnpdev.h,v 1.4 2021/08/21 09:45:01 nanard Exp $ */
 /* Project : miniupnp
- * Web : http://miniupnp.free.fr/
+ * Web : http://miniupnp.free.fr/ or https://miniupnp.tuxfamily.org/
  * Author : Thomas BERNARD
- * copyright (c) 2005-2018 Thomas Bernard
+ * copyright (c) 2005-2021 Thomas Bernard
  * This software is subjet to the conditions detailed in the
  * provided LICENSE file. */
 #ifndef UPNPDEV_H_INCLUDED
@@ -20,7 +20,15 @@ struct UPNPDev {
 	char * st;
 	char * usn;
 	unsigned int scope_id;
-	char buffer[3];
+#if defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L
+	/* C99 flexible array member */
+	char buffer[];
+#elif defined(__GNUC__)
+	char buffer[0];
+#else
+	/* Fallback to a hack */
+	char buffer[1];
+#endif
 };
 
 /* freeUPNPDevlist()

libs/include/miniupnpc/upnpreplyparse.h

@@ -0,0 +1,63 @@
+/* $Id: upnpreplyparse.h,v 1.19 2014/10/27 16:33:19 nanard Exp $ */
+/* MiniUPnP project
+ * http://miniupnp.free.fr/ or http://miniupnp.tuxfamily.org/
+ * (c) 2006-2013 Thomas Bernard
+ * This software is subject to the conditions detailed
+ * in the LICENCE file provided within the distribution */
+
+#ifndef UPNPREPLYPARSE_H_INCLUDED
+#define UPNPREPLYPARSE_H_INCLUDED
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct NameValue {
+	struct NameValue * l_next;
+	char name[64];
+	char value[128];
+};
+
+struct NameValueParserData {
+	struct NameValue * l_head;
+	char curelt[64];
+	char * portListing;
+	int portListingLength;
+	int topelt;
+	const char * cdata;
+	int cdatalen;
+};
+
+/* ParseNameValue() */
+void
+ParseNameValue(const char * buffer, int bufsize,
+               struct NameValueParserData * data);
+
+/* ClearNameValueList() */
+void
+ClearNameValueList(struct NameValueParserData * pdata);
+
+/* GetValueFromNameValueList() */
+char *
+GetValueFromNameValueList(struct NameValueParserData * pdata,
+                          const char * Name);
+
+#if 0
+/* GetValueFromNameValueListIgnoreNS() */
+char *
+GetValueFromNameValueListIgnoreNS(struct NameValueParserData * pdata,
+                                  const char * Name);
+#endif
+
+/* DisplayNameValueList() */
+#ifdef DEBUG
+void
+DisplayNameValueList(char * buffer, int bufsize);
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+

libs/include/natpmp.h

@@ -51,6 +51,13 @@ typedef unsigned short uint16_t;
 #endif	/* _WIN32 */
 #include "natpmp_declspec.h"
 
+/* Set to 9 by https://tools.ietf.org/html/rfc6886#section-3.1 which leads to a
+ * maximum timeout of 127.75 seconds, due to the initial 250 ms timeout doubling
+ * each time, so we allow a compile-time modification here.*/
+#ifndef NATPMP_MAX_RETRIES
+#define NATPMP_MAX_RETRIES (9)
+#endif
+
 typedef struct {
 	int s;	/* socket */
 	in_addr_t gateway;	/* default gateway (IPv4) */

libs/include/natpmp_declspec.h

@@ -1,5 +1,5 @@
-#ifndef DECLSPEC_H_INCLUDED
-#define DECLSPEC_H_INCLUDED
+#ifndef NATPMP_DECLSPEC_H_INCLUDED
+#define NATPMP_DECLSPEC_H_INCLUDED
 
 #if defined(_WIN32) && !defined(NATPMP_STATICLIB)
 	/* for windows dll */

mish-setup/Bundle.wxs

@@ -0,0 +1,52 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<?define VCREDIST_VER = "14.31.31103" ?>
+<?define VCREDIST_X86_SIZE = "13725768" ?>
+<?define VCREDIST_X86_SHA1 = "15fe8e70c3c5582b70df173cd9b580331677735a" ?>
+<?define VCREDIST_X86_URL = "https://download.visualstudio.microsoft.com/download/pr/144a5711-f076-44fa-bf55-f7e0121eb30c/B7AE307237F869E09F7413691A2CD1944357B5CEE28049C0A0D3430B47BB3EDC/VC_redist.x86.exe" ?>
+<?define VCREDIST_X86_UPGRADE_CODE = "65E5BD06-6392-3027-8C26-853107D3CF1A" ?>
+
+<Wix xmlns="http://schemas.microsoft.com/wix/2006/wi"
+     xmlns:bal="http://schemas.microsoft.com/wix/BalExtension"
+     xmlns:util="http://schemas.microsoft.com/wix/UtilExtension">
+	<Bundle Name="Moonlight Internet Hosting Tool" Manufacturer="Moonlight Game Streaming Project" Version="!(bind.packageVersion.mish)" UpgradeCode="a2ce5056-1114-44b9-b79b-952ef46d3d50">
+    <BootstrapperApplicationRef Id="WixStandardBootstrapperApplication.RtfLicense">
+      <bal:WixStandardBootstrapperApplication
+            LicenseFile="license.rtf"
+            ShowVersion="yes"
+            SuppressOptionsUI="yes"
+            />
+    </BootstrapperApplicationRef>
+
+    <WixVariable Id="WixUILicenseRtf" Value="" />
+
+    <util:ProductSearch Id="VCREDIST_14_x86"
+                        UpgradeCode="$(var.VCREDIST_X86_UPGRADE_CODE)"
+                        Result="version"
+                        Variable="VCREDIST_14_x86" />
+      
+    <Chain>
+      <ExePackage Name="Microsoft Visual C++ 2015-2022 Redistributable - x86"
+                  Cache="no"
+                  Compressed="no"
+                  PerMachine="yes"
+                  Permanent="yes"
+                  Vital="yes"
+                  InstallCommand="/install /quiet /norestart"
+                  DownloadUrl="$(var.VCREDIST_X86_URL)"
+                  DetectCondition="VCREDIST_14_x86 &gt;= v$(var.VCREDIST_VER)">
+        
+        <RemotePayload Description="Microsoft Visual C++ 2015-2022 Redistributable - x86"
+                       ProductName="Microsoft Visual C++ 2015-2022 Redistributable - x86"
+                       Size="$(var.VCREDIST_X86_SIZE)"
+                       Version="$(var.VCREDIST_VER).0"
+                       Hash="$(var.VCREDIST_X86_SHA1)"/>
+
+        <!-- Newer version installed is fine -->
+        <ExitCode Value="1638" Behavior="success" />
+      </ExePackage>
+      <MsiPackage Id="mish" SourceFile="$(var.mish.TargetPath)" />
+      <MsiPackage SourceFile="$(var.GSv6FwdSetup.TargetPath)" />
+		</Chain>
+	</Bundle>
+</Wix>

mish-setup/license.rtf

@@ -0,0 +1,124 @@
+{\rtf1\ansi\deff0\nouicompat{\fonttbl{\f0\fswiss Helvetica;}{\f1\fswiss\fcharset0 Helvetica;}}
+{\colortbl ;\red0\green0\blue255;}
+{\*\generator Riched20 10.0.17713}\viewkind4\uc1 
+\pard\sa180\b\f0\fs28\lang9 GNU GENERAL PUBLIC LICENSE\par
+\b0\fs24 Version 3, 29 June 2007\par
+Copyright \f1\'a9 2007 Free Software Foundation, Inc. <{{\field{\*\fldinst{HYPERLINK "https://fsf.org/"}}{\fldrslt{https://fsf.org/\ul0\cf0}}}}\f1\fs24 >\par
+\f0 Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed.\par
+\b\fs28 Preamble\par
+\b0\fs24 The GNU General Public License is a free, copyleft license for software and other kinds of works.\par
+The licenses for most software and other practical works are designed to take away your freedom to share and change the works. By contrast, the GNU General Public License is intended to guarantee your freedom to share and change all versions of a program--to make sure it remains free software for all its users. We, the Free Software Foundation, use the GNU General Public License for most of our software; it applies also to any other work released this way by its authors. You can apply it to your programs, too.\par
+When we speak of free software, we are referring to freedom, not price. Our General Public Licenses are designed to make sure that you have the freedom to distribute copies of free software (and charge for them if you wish), that you receive source code or can get it if you want it, that you can change the software or use pieces of it in new free programs, and that you know you can do these things.\par
+To protect your rights, we need to prevent others from denying you these rights or asking you to surrender the rights. Therefore, you have certain responsibilities if you distribute copies of the software, or if you modify it: responsibilities to respect the freedom of others.\par
+For example, if you distribute copies of such a program, whether gratis or for a fee, you must pass on to the recipients the same freedoms that you received. You must make sure that they, too, receive or can get the source code. And you must show them these terms so they know their rights.\par
+Developers that use the GNU GPL protect your rights with two steps: (1) assert copyright on the software, and (2) offer you this License giving you legal permission to copy, distribute and/or modify it.\par
+For the developers' and authors' protection, the GPL clearly explains that there is no warranty for this free software. For both users' and authors' sake, the GPL requires that modified versions be marked as changed, so that their problems will not be attributed erroneously to authors of previous versions.\par
+Some devices are designed to deny users access to install or run modified versions of the software inside them, although the manufacturer can do so. This is fundamentally incompatible with the aim of protecting users' freedom to change the software. The systematic pattern of such abuse occurs in the area of products for individuals to use, which is precisely where it is most unacceptable. Therefore, we have designed this version of the GPL to prohibit the practice for those products. If such problems arise substantially in other domains, we stand ready to extend this provision to those domains in future versions of the GPL, as needed to protect the freedom of users.\par
+Finally, every program is threatened constantly by software patents. States should not allow patents to restrict development and use of software on general-purpose computers, but in those that do, we wish to avoid the special danger that patents applied to a free program could make it effectively proprietary. To prevent this, the GPL assures that patents cannot be used to render the program non-free.\par
+The precise terms and conditions for copying, distribution and modification follow.\par
+\b\fs28 TERMS AND CONDITIONS\par
+\fs24 0. Definitions.\par
+\b0\ldblquote This License\rdblquote  refers to version 3 of the GNU General Public License.\par
+\ldblquote Copyright\rdblquote  also means copyright-like laws that apply to other kinds of works, such as semiconductor masks.\par
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+An interactive user interface displays \ldblquote Appropriate Legal Notices\rdblquote  to the extent that it includes a convenient and prominently visible feature that (1) displays an appropriate copyright notice, and (2) tells the user that there is no warranty for the work (except to the extent that warranties are provided), that licensees may convey the work under this License, and how to view a copy of this License. If the interface presents a list of user commands or options, such as a menu, a prominent item in the list meets this criterion.\par
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+\b0 The \ldblquote source code\rdblquote  for a work means the preferred form of the work for making modifications to it. \ldblquote Object code\rdblquote  means any non-source form of a work.\par
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+\b0 You may convey a work based on the Program, or the modifications to produce it from the Program, in the form of source code under the terms of section 4, provided that you also meet all of these conditions:\par
+
+\pard\fi-360\li360\tx360\bullet\tab a) The work must carry prominent notices stating that you modified it, and giving a relevant date.\par
+\bullet\tab b) The work must carry prominent notices stating that it is released under this License and any conditions added under section 7. This requirement modifies the requirement in section 4 to \ldblquote keep intact all notices\rdblquote .\par
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+
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+\ldblquote Installation Information\rdblquote  for a User Product means any methods, procedures, authorization keys, or other information required to install and execute modified versions of a covered work in that User Product from a modified version of its Corresponding Source. The information must suffice to ensure that the continued functioning of the modified object code is in no case prevented or interfered with solely because modification has been made.\par
+If you convey an object code work under this section in, or with, or specifically for use in, a User Product, and the conveying occurs as part of a transaction in which the right of possession and use of the User Product is transferred to the recipient in perpetuity or for a fixed term (regardless of how the transaction is characterized), the Corresponding Source conveyed under this section must be accompanied by the Installation Information. But this requirement does not apply if neither you nor any third party retains the ability to install modified object code on the User Product (for example, the work has been installed in ROM).\par
+The requirement to provide Installation Information does not include a requirement to continue to provide support service, warranty, or updates for a work that has been modified or installed by the recipient, or for the User Product in which it has been modified or installed. Access to a network may be denied when the modification itself materially and adversely affects the operation of the network or violates the rules and protocols for communication across the network.\par
+Corresponding Source conveyed, and Installation Information provided, in accord with this section must be in a format that is publicly documented (and with an implementation available to the public in source code form), and must require no special password or key for unpacking, reading or copying.\par
+\b 7. Additional Terms.\par
+\b0\ldblquote Additional permissions\rdblquote  are terms that supplement the terms of this License by making exceptions from one or more of its conditions. Additional permissions that are applicable to the entire Program shall be treated as though they were included in this License, to the extent that they are valid under applicable law. If additional permissions apply only to part of the Program, that part may be used separately under those permissions, but the entire Program remains governed by this License without regard to the additional permissions.\par
+When you convey a copy of a covered work, you may at your option remove any additional permissions from that copy, or from any part of it. (Additional permissions may be written to require their own removal in certain cases when you modify the work.) You may place additional permissions on material, added by you to a covered work, for which you have or can give appropriate copyright permission.\par
+Notwithstanding any other provision of this License, for material you add to a covered work, you may (if authorized by the copyright holders of that material) supplement the terms of this License with terms:\par
+
+\pard\fi-360\li360\tx360\bullet\tab a) Disclaiming warranty or limiting liability differently from the terms of sections 15 and 16 of this License; or\par
+\bullet\tab b) Requiring preservation of specified reasonable legal notices or author attributions in that material or in the Appropriate Legal Notices displayed by works containing it; or\par
+\bullet\tab c) Prohibiting misrepresentation of the origin of that material, or requiring that modified versions of such material be marked in reasonable ways as different from the original version; or\par
+\bullet\tab d) Limiting the use for publicity purposes of names of licensors or authors of the material; or\par
+\bullet\tab e) Declining to grant rights under trademark law for use of some trade names, trademarks, or service marks; or\par
+
+\pard\fi-360\li360\sa180\tx360\bullet\tab f) Requiring indemnification of licensors and authors of that material by anyone who conveys the material (or modified versions of it) with contractual assumptions of liability to the recipient, for any liability that these contractual assumptions directly impose on those licensors and authors.\par
+
+\pard\sa180 All other non-permissive additional terms are considered \ldblquote further restrictions\rdblquote  within the meaning of section 10. If the Program as you received it, or any part of it, contains a notice stating that it is governed by this License along with a term that is a further restriction, you may remove that term. If a license document contains a further restriction but permits relicensing or conveying under this License, you may add to a covered work material governed by the terms of that license document, provided that the further restriction does not survive such relicensing or conveying.\par
+If you add terms to a covered work in accord with this section, you must place, in the relevant source files, a statement of the additional terms that apply to those files, or a notice indicating where to find the applicable terms.\par
+Additional terms, permissive or non-permissive, may be stated in the form of a separately written license, or stated as exceptions; the above requirements apply either way.\par
+\b 8. Termination.\par
+\b0 You may not propagate or modify a covered work except as expressly provided under this License. Any attempt otherwise to propagate or modify it is void, and will automatically terminate your rights under this License (including any patent licenses granted under the third paragraph of section 11).\par
+However, if you cease all violation of this License, then your license from a particular copyright holder is reinstated (a) provisionally, unless and until the copyright holder explicitly and finally terminates your license, and (b) permanently, if the copyright holder fails to notify you of the violation by some reasonable means prior to 60 days after the cessation.\par
+Moreover, your license from a particular copyright holder is reinstated permanently if the copyright holder notifies you of the violation by some reasonable means, this is the first time you have received notice of violation of this License (for any work) from that copyright holder, and you cure the violation prior to 30 days after your receipt of the notice.\par
+Termination of your rights under this section does not terminate the licenses of parties who have received copies or rights from you under this License. If your rights have been terminated and not permanently reinstated, you do not qualify to receive new licenses for the same material under section 10.\par
+\b 9. Acceptance Not Required for Having Copies.\par
+\b0 You are not required to accept this License in order to receive or run a copy of the Program. Ancillary propagation of a covered work occurring solely as a consequence of using peer-to-peer transmission to receive a copy likewise does not require acceptance. However, nothing other than this License grants you permission to propagate or modify any covered work. These actions infringe copyright if you do not accept this License. Therefore, by modifying or propagating a covered work, you indicate your acceptance of this License to do so.\par
+\b 10. Automatic Licensing of Downstream Recipients.\par
+\b0 Each time you convey a covered work, the recipient automatically receives a license from the original licensors, to run, modify and propagate that work, subject to this License. You are not responsible for enforcing compliance by third parties with this License.\par
+An \ldblquote entity transaction\rdblquote  is a transaction transferring control of an organization, or substantially all assets of one, or subdividing an organization, or merging organizations. If propagation of a covered work results from an entity transaction, each party to that transaction who receives a copy of the work also receives whatever licenses to the work the party's predecessor in interest had or could give under the previous paragraph, plus a right to possession of the Corresponding Source of the work from the predecessor in interest, if the predecessor has it or can get it with reasonable efforts.\par
+You may not impose any further restrictions on the exercise of the rights granted or affirmed under this License. For example, you may not impose a license fee, royalty, or other charge for exercise of rights granted under this License, and you may not initiate litigation (including a cross-claim or counterclaim in a lawsuit) alleging that any patent claim is infringed by making, using, selling, offering for sale, or importing the Program or any portion of it.\par
+\b 11. Patents.\par
+\b0 A \ldblquote contributor\rdblquote  is a copyright holder who authorizes use under this License of the Program or a work on which the Program is based. The work thus licensed is called the contributor's \ldblquote contributor version\rdblquote .\par
+A contributor's \ldblquote essential patent claims\rdblquote  are all patent claims owned or controlled by the contributor, whether already acquired or hereafter acquired, that would be infringed by some manner, permitted by this License, of making, using, or selling its contributor version, but do not include claims that would be infringed only as a consequence of further modification of the contributor version. For purposes of this definition, \ldblquote control\rdblquote  includes the right to grant patent sublicenses in a manner consistent with the requirements of this License.\par
+Each contributor grants you a non-exclusive, worldwide, royalty-free patent license under the contributor's essential patent claims, to make, use, sell, offer for sale, import and otherwise run, modify and propagate the contents of its contributor version.\par
+In the following three paragraphs, a \ldblquote patent license\rdblquote  is any express agreement or commitment, however denominated, not to enforce a patent (such as an express permission to practice a patent or covenant not to sue for patent infringement). To \ldblquote grant\rdblquote  such a patent license to a party means to make such an agreement or commitment not to enforce a patent against the party.\par
+If you convey a covered work, knowingly relying on a patent license, and the Corresponding Source of the work is not available for anyone to copy, free of charge and under the terms of this License, through a publicly available network server or other readily accessible means, then you must either (1) cause the Corresponding Source to be so available, or (2) arrange to deprive yourself of the benefit of the patent license for this particular work, or (3) arrange, in a manner consistent with the requirements of this License, to extend the patent license to downstream recipients. \ldblquote Knowingly relying\rdblquote  means you have actual knowledge that, but for the patent license, your conveying the covered work in a country, or your recipient's use of the covered work in a country, would infringe one or more identifiable patents in that country that you have reason to believe are valid.\par
+If, pursuant to or in connection with a single transaction or arrangement, you convey, or propagate by procuring conveyance of, a covered work, and grant a patent license to some of the parties receiving the covered work authorizing them to use, propagate, modify or convey a specific copy of the covered work, then the patent license you grant is automatically extended to all recipients of the covered work and works based on it.\par
+A patent license is \ldblquote discriminatory\rdblquote  if it does not include within the scope of its coverage, prohibits the exercise of, or is conditioned on the non-exercise of one or more of the rights that are specifically granted under this License. You may not convey a covered work if you are a party to an arrangement with a third party that is in the business of distributing software, under which you make payment to the third party based on the extent of your activity of conveying the work, and under which the third party grants, to any of the parties who would receive the covered work from you, a discriminatory patent license (a) in connection with copies of the covered work conveyed by you (or copies made from those copies), or (b) primarily for and in connection with specific products or compilations that contain the covered work, unless you entered into that arrangement, or that patent license was granted, prior to 28 March 2007.\par
+Nothing in this License shall be construed as excluding or limiting any implied license or other defenses to infringement that may otherwise be available to you under applicable patent law.\par
+\b 12. No Surrender of Others' Freedom.\par
+\b0 If conditions are imposed on you (whether by court order, agreement or otherwise) that contradict the conditions of this License, they do not excuse you from the conditions of this License. If you cannot convey a covered work so as to satisfy simultaneously your obligations under this License and any other pertinent obligations, then as a consequence you may not convey it at all. For example, if you agree to terms that obligate you to collect a royalty for further conveying from those to whom you convey the Program, the only way you could satisfy both those terms and this License would be to refrain entirely from conveying the Program.\par
+\b 13. Use with the GNU Affero General Public License.\par
+\b0 Notwithstanding any other provision of this License, you have permission to link or combine any covered work with a work licensed under version 3 of the GNU Affero General Public License into a single combined work, and to convey the resulting work. The terms of this License will continue to apply to the part which is the covered work, but the special requirements of the GNU Affero General Public License, section 13, concerning interaction through a network will apply to the combination as such.\par
+\b 14. Revised Versions of this License.\par
+\b0 The Free Software Foundation may publish revised and/or new versions of the GNU General Public License from time to time. Such new versions will be similar in spirit to the present version, but may differ in detail to address new problems or concerns.\par
+Each version is given a distinguishing version number. If the Program specifies that a certain numbered version of the GNU General Public License \ldblquote or any later version\rdblquote  applies to it, you have the option of following the terms and conditions either of that numbered version or of any later version published by the Free Software Foundation. If the Program does not specify a version number of the GNU General Public License, you may choose any version ever published by the Free Software Foundation.\par
+If the Program specifies that a proxy can decide which future versions of the GNU General Public License can be used, that proxy's public statement of acceptance of a version permanently authorizes you to choose that version for the Program.\par
+Later license versions may give you additional or different permissions. However, no additional obligations are imposed on any author or copyright holder as a result of your choosing to follow a later version.\par
+\b 15. Disclaimer of Warranty.\par
+\b0 THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM \ldblquote AS IS\rdblquote  WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.\par
+\b 16. Limitation of Liability.\par
+\b0 IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.\par
+\b 17. Interpretation of Sections 15 and 16.\par
+\b0 If the disclaimer of warranty and limitation of liability provided above cannot be given local legal effect according to their terms, reviewing courts shall apply local law that most closely approximates an absolute waiver of all civil liability in connection with the Program, unless a warranty or assumption of liability accompanies a copy of the Program in return for a fee.\b\fs28\par
+}
+

mish-setup/mish-setup.wixproj

@@ -0,0 +1,65 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" DefaultTargets="Build" InitialTargets="EnsureWixToolsetInstalled" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">x86</Platform>
+    <ProductVersion>3.10</ProductVersion>
+    <ProjectGuid>a2ce5056-1114-44b9-b79b-952ef46d3d50</ProjectGuid>
+    <SchemaVersion>2.0</SchemaVersion>
+    <OutputName>InternetHostingToolSetup</OutputName>
+    <OutputType>Bundle</OutputType>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|x86' ">
+    <OutputPath>bin\$(Configuration)\</OutputPath>
+    <IntermediateOutputPath>obj\$(Configuration)\</IntermediateOutputPath>
+    <DefineConstants>Debug</DefineConstants>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|x86' ">
+    <OutputPath>bin\$(Configuration)\</OutputPath>
+    <IntermediateOutputPath>obj\$(Configuration)\</IntermediateOutputPath>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="Bundle.wxs" />
+  </ItemGroup>
+  <ItemGroup>
+    <WixExtension Include="WixBalExtension">
+      <HintPath>$(WixExtDir)\WixBalExtension.dll</HintPath>
+      <Name>WixBalExtension</Name>
+    </WixExtension>
+    <WixExtension Include="WixUtilExtension">
+      <HintPath>$(WixExtDir)\WixUtilExtension.dll</HintPath>
+      <Name>WixUtilExtension</Name>
+    </WixExtension>
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\GS-IPv6-Forwarder\GSv6FwdSetup\GSv6FwdSetup.wixproj">
+      <Name>GSv6FwdSetup</Name>
+      <Project>{f8171b99-f5f9-4abf-9fe5-6753539611af}</Project>
+      <Private>True</Private>
+      <DoNotHarvest>True</DoNotHarvest>
+      <RefProjectOutputGroups>Binaries;Content;Satellites</RefProjectOutputGroups>
+      <RefTargetDir>INSTALLFOLDER</RefTargetDir>
+    </ProjectReference>
+    <ProjectReference Include="..\mish\mish.wixproj">
+      <Name>mish</Name>
+      <Project>{f0dee5f3-4b62-47a3-b00b-61c614c924fd}</Project>
+      <Private>True</Private>
+      <DoNotHarvest>True</DoNotHarvest>
+      <RefProjectOutputGroups>Binaries;Content;Satellites</RefProjectOutputGroups>
+      <RefTargetDir>INSTALLFOLDER</RefTargetDir>
+    </ProjectReference>
+  </ItemGroup>
+  <Import Project="$(WixTargetsPath)" Condition=" '$(WixTargetsPath)' != '' " />
+  <Import Project="$(MSBuildExtensionsPath32)\Microsoft\WiX\v3.x\Wix.targets" Condition=" '$(WixTargetsPath)' == '' AND Exists('$(MSBuildExtensionsPath32)\Microsoft\WiX\v3.x\Wix.targets') " />
+  <Target Name="EnsureWixToolsetInstalled" Condition=" '$(WixTargetsImported)' != 'true' ">
+    <Error Text="The WiX Toolset v3.11 (or newer) build tools must be installed to build this project. To download the WiX Toolset, see http://wixtoolset.org/releases/" />
+  </Target>
+  <!--
+	To modify your build process, add your task inside one of the targets below and uncomment it.
+	Other similar extension points exist, see Wix.targets.
+	<Target Name="BeforeBuild">
+	</Target>
+	<Target Name="AfterBuild">
+	</Target>
+	-->
+</Project>

mish.sln

@@ -1,7 +1,7 @@
 
 Microsoft Visual Studio Solution File, Format Version 12.00
-# Visual Studio 15
-VisualStudioVersion = 15.0.28010.2046
+# Visual Studio Version 16
+VisualStudioVersion = 16.0.29102.190
 MinimumVisualStudioVersion = 10.0.40219.1
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "miss", "miss\miss.vcxproj", "{B71C4E7F-0D92-4E19-BBD2-D33F0EF879B1}"
 EndProject
@@ -9,36 +9,42 @@ Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "mist", "mist\mist.vcxproj",
 EndProject
 Project("{930C7802-8A8C-48F9-8165-68863BCCD9DD}") = "mish", "mish\mish.wixproj", "{F0DEE5F3-4B62-47A3-B00B-61C614C924FD}"
 EndProject
+Project("{930C7802-8A8C-48F9-8165-68863BCCD9DD}") = "mish-setup", "mish-setup\mish-setup.wixproj", "{A2CE5056-1114-44B9-B79B-952EF46D3D50}"
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "GSv6Fwd", "GS-IPv6-Forwarder\GSv6Fwd\GSv6Fwd.vcxproj", "{87DEAE49-7638-4CDB-88EB-054B1F3CB0D2}"
+EndProject
+Project("{930C7802-8A8C-48F9-8165-68863BCCD9DD}") = "GSv6FwdSetup", "GS-IPv6-Forwarder\GSv6FwdSetup\GSv6FwdSetup.wixproj", "{F8171B99-F5F9-4ABF-9FE5-6753539611AF}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
-		Debug|x64 = Debug|x64
 		Debug|x86 = Debug|x86
-		Release|x64 = Release|x64
 		Release|x86 = Release|x86
 	EndGlobalSection
 	GlobalSection(ProjectConfigurationPlatforms) = postSolution
-		{B71C4E7F-0D92-4E19-BBD2-D33F0EF879B1}.Debug|x64.ActiveCfg = Debug|x64
-		{B71C4E7F-0D92-4E19-BBD2-D33F0EF879B1}.Debug|x64.Build.0 = Debug|x64
 		{B71C4E7F-0D92-4E19-BBD2-D33F0EF879B1}.Debug|x86.ActiveCfg = Debug|Win32
 		{B71C4E7F-0D92-4E19-BBD2-D33F0EF879B1}.Debug|x86.Build.0 = Debug|Win32
-		{B71C4E7F-0D92-4E19-BBD2-D33F0EF879B1}.Release|x64.ActiveCfg = Release|x64
-		{B71C4E7F-0D92-4E19-BBD2-D33F0EF879B1}.Release|x64.Build.0 = Release|x64
 		{B71C4E7F-0D92-4E19-BBD2-D33F0EF879B1}.Release|x86.ActiveCfg = Release|Win32
 		{B71C4E7F-0D92-4E19-BBD2-D33F0EF879B1}.Release|x86.Build.0 = Release|Win32
-		{8F78D8D2-A837-489C-BAC5-81494C9CEF7A}.Debug|x64.ActiveCfg = Debug|x64
-		{8F78D8D2-A837-489C-BAC5-81494C9CEF7A}.Debug|x64.Build.0 = Debug|x64
 		{8F78D8D2-A837-489C-BAC5-81494C9CEF7A}.Debug|x86.ActiveCfg = Debug|Win32
 		{8F78D8D2-A837-489C-BAC5-81494C9CEF7A}.Debug|x86.Build.0 = Debug|Win32
-		{8F78D8D2-A837-489C-BAC5-81494C9CEF7A}.Release|x64.ActiveCfg = Release|x64
-		{8F78D8D2-A837-489C-BAC5-81494C9CEF7A}.Release|x64.Build.0 = Release|x64
 		{8F78D8D2-A837-489C-BAC5-81494C9CEF7A}.Release|x86.ActiveCfg = Release|Win32
 		{8F78D8D2-A837-489C-BAC5-81494C9CEF7A}.Release|x86.Build.0 = Release|Win32
-		{F0DEE5F3-4B62-47A3-B00B-61C614C924FD}.Debug|x64.ActiveCfg = Debug|x86
 		{F0DEE5F3-4B62-47A3-B00B-61C614C924FD}.Debug|x86.ActiveCfg = Debug|x86
 		{F0DEE5F3-4B62-47A3-B00B-61C614C924FD}.Debug|x86.Build.0 = Debug|x86
-		{F0DEE5F3-4B62-47A3-B00B-61C614C924FD}.Release|x64.ActiveCfg = Release|x86
 		{F0DEE5F3-4B62-47A3-B00B-61C614C924FD}.Release|x86.ActiveCfg = Release|x86
 		{F0DEE5F3-4B62-47A3-B00B-61C614C924FD}.Release|x86.Build.0 = Release|x86
+		{A2CE5056-1114-44B9-B79B-952EF46D3D50}.Debug|x86.ActiveCfg = Debug|x86
+		{A2CE5056-1114-44B9-B79B-952EF46D3D50}.Debug|x86.Build.0 = Debug|x86
+		{A2CE5056-1114-44B9-B79B-952EF46D3D50}.Release|x86.ActiveCfg = Release|x86
+		{A2CE5056-1114-44B9-B79B-952EF46D3D50}.Release|x86.Build.0 = Release|x86
+		{87DEAE49-7638-4CDB-88EB-054B1F3CB0D2}.Debug|x86.ActiveCfg = Debug|Win32
+		{87DEAE49-7638-4CDB-88EB-054B1F3CB0D2}.Debug|x86.Build.0 = Debug|Win32
+		{87DEAE49-7638-4CDB-88EB-054B1F3CB0D2}.Release|x86.ActiveCfg = Release|Win32
+		{87DEAE49-7638-4CDB-88EB-054B1F3CB0D2}.Release|x86.Build.0 = Release|Win32
+		{F8171B99-F5F9-4ABF-9FE5-6753539611AF}.Debug|x86.ActiveCfg = Debug|x86
+		{F8171B99-F5F9-4ABF-9FE5-6753539611AF}.Debug|x86.Build.0 = Debug|x86
+		{F8171B99-F5F9-4ABF-9FE5-6753539611AF}.Release|x86.ActiveCfg = Release|x86
+		{F8171B99-F5F9-4ABF-9FE5-6753539611AF}.Release|x86.Build.0 = Release|x86
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

mish/Product.wxs

@@ -1,7 +1,8 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Wix xmlns="http://schemas.microsoft.com/wix/2006/wi"
-     xmlns:fire="http://schemas.microsoft.com/wix/FirewallExtension">
-  <Product Id="*" Name="Moonlight Internet Streaming Helper" Language="1033" Version="!(bind.fileVersion.MistExe)"
+     xmlns:fire="http://schemas.microsoft.com/wix/FirewallExtension"
+     xmlns:util="http://schemas.microsoft.com/wix/UtilExtension">
+  <Product Id="*" Name="Moonlight Internet Hosting Tool" Language="1033" Version="!(bind.fileVersion.MistExe)"
            Manufacturer="Moonlight Game Streaming Project" UpgradeCode="cfc2fb53-88e2-4867-851d-9ed9fe7ab2a3">
     <Package InstallerVersion="500" Compressed="yes" InstallScope="perMachine" />
 
@@ -13,13 +14,35 @@
     </Feature>
   </Product>
 
+  <!-- Enable the Windows Firewall service if it is disabled. Disabling the Windows Firewall service
+       will paradoxically block *all* incoming network traffic and prevent GameStream, MIST, MISS,
+       and other local servers from working at all. The proper way to disable Windows Firewall is via
+       the Windows Firewall control panel applet. -->
+  <Fragment>
+    <Property Id="MPSSVC_START">
+      <RegistrySearch Id="MpsSvcStart"
+                      Root="HKLM"
+                      Key="System\CurrentControlSet\Services\MpsSvc"
+                      Name="Start"
+                      Type="raw" />
+    </Property>
+
+    <SetProperty Id="EnableMpsSvc" Value='"[SystemFolder]sc.exe" config MpsSvc start= auto' Sequence="execute" Before="InstallInitialize"/>
+    <CustomAction Id="EnableMpsSvc" BinaryKey="WixCA" DllEntry="WixQuietExec"
+                  Execute="deferred" Return="ignore" Impersonate="no"/>
+
+    <SetProperty Id="StartMpsSvc" Value='"[SystemFolder]net.exe" start MpsSvc' Sequence="execute" Before="InstallInitialize"/>
+    <CustomAction Id="StartMpsSvc" BinaryKey="WixCA" DllEntry="WixQuietExec"
+                  Execute="deferred" Return="ignore" Impersonate="no"/>
+  </Fragment>
+  
   <Fragment>
     <Directory Id="TARGETDIR" Name="SourceDir">
       <Directory Id="ProgramFilesFolder">
-        <Directory Id="INSTALLFOLDER" Name="Moonlight Internet Streaming Helper" />
+        <Directory Id="INSTALLFOLDER" Name="Moonlight Internet Hosting Tool" />
       </Directory>
       <Directory Id="ProgramMenuFolder">
-        <Directory Id="ApplicationProgramsFolder" Name="Moonlight Internet Streaming Helper" />
+        <Directory Id="ApplicationProgramsFolder" Name="Moonlight Internet Hosting Tool" />
       </Directory>
       <Directory Id="CommonAppDataFolder">
         <Directory Name="MISS" Id="MISSLogFolder" />
@@ -29,22 +52,31 @@
 
   <Fragment>
     <ComponentGroup Id="ProductComponents" Directory="INSTALLFOLDER">
+      <Component Id="MiniupnpcDll">
+        <File Source="$(var.miss.TargetDir)miniupnpc.dll" KeyPath="yes"/>
+      </Component>
+      <Component Id="LibnatpmpDll">
+        <File Source="$(var.miss.TargetDir)libnatpmp.dll" KeyPath="yes"/>
+      </Component>
       <Component Id="MISS">
         <File Source="$(var.miss.TargetPath)" KeyPath="yes">
           <fire:FirewallException Id="MISSFwException"
                                   Scope="any"
                                   Name="Moonlight Internet Streaming Service"/>
         </File>
-        <CreateFolder Directory="MISSLogFolder" />
+        <CreateFolder Directory="MISSLogFolder">
+          <util:PermissionEx User="NT SERVICE\MISS" GenericAll="yes" />
+        </CreateFolder>
         <ServiceInstall Type="ownProcess"
                         Name="MISS"
                         DisplayName="Moonlight Internet Streaming Service"
                         Description="Automatically manages router port forwarding rules required to use Moonlight over the Internet"
                         Start="auto"
-                        Account="LocalSystem"
+                        Account="NT AUTHORITY\LocalService"
                         ErrorControl="ignore"
                         Interactive="no">
-          <ServiceConfig DelayedAutoStart="no" OnInstall="yes" OnReinstall="yes" />
+          <ServiceConfig DelayedAutoStart="no" OnInstall="yes" OnReinstall="yes" ServiceSid="unrestricted"/>
+          <util:ServiceConfig FirstFailureActionType="restart" SecondFailureActionType="restart" ThirdFailureActionType="restart" ResetPeriodInDays="1" RestartServiceDelayInSeconds="10"/>
         </ServiceInstall>
         <ServiceControl Id="StartService" Start="install" Stop="both" Remove="uninstall" Name="MISS" Wait="yes" />
       </Component>
@@ -55,6 +87,48 @@
                                   Name="Moonlight Internet Streaming Tester"/>
         </File>
       </Component>
+      <Component Id="GameStreamFirewallRules" Guid="{16CA2511-B533-46F8-8882-F8AEEFDFD7DF}" KeyPath="yes">
+        <fire:FirewallException Id="HttpsFwException"
+                                Scope="any"
+                                Port="47984"
+                                Protocol="tcp"
+                                Name="Moonlight - HTTPS"/>
+        <fire:FirewallException Id="HttpFwException"
+                                Scope="any"
+                                Port="47989"
+                                Protocol="tcp"
+                                Name="Moonlight - HTTP"/>
+        <fire:FirewallException Id="RtspFwException"
+                                Scope="any"
+                                Port="48010"
+                                Protocol="tcp"
+                                Name="Moonlight - RTSP"/>
+        <fire:FirewallException Id="VideoFwException"
+                                Scope="any"
+                                Port="47998"
+                                Protocol="udp"
+                                Name="Moonlight - Video"/>
+        <fire:FirewallException Id="ControlFwException"
+                                Scope="any"
+                                Port="47999"
+                                Protocol="udp"
+                                Name="Moonlight - Control"/>
+        <fire:FirewallException Id="AudioFwException"
+                                Scope="any"
+                                Port="48000"
+                                Protocol="udp"
+                                Name="Moonlight - Audio"/>
+        <fire:FirewallException Id="RtspuFwException"
+                                Scope="any"
+                                Port="48010"
+                                Protocol="udp"
+                                Name="Moonlight - RTSPU"/>
+        <fire:FirewallException Id="MdnsFwException"
+                                Scope="any"
+                                Port="5353"
+                                Protocol="udp"
+                                Name="Moonlight - mDNS"/>
+      </Component>
       <Component Id="Shortcuts" Guid="*">
         <Shortcut Id="StartMenuShortcut"
                   Name="Moonlight Internet Streaming Tester"
@@ -66,5 +140,14 @@
         <RegistryValue Root="HKCU" Key="Software\Moonlight Internet Streaming Tester" Name="Installed" Type="integer" Value="1" KeyPath="yes" />
       </Component>
     </ComponentGroup>
+
+    <InstallExecuteSequence>
+      <Custom Action="EnableMpsSvc" Before="StartMpsSvc">
+        <![CDATA[MPSSVC_START <> "#2"]]>
+      </Custom>
+      <Custom Action="StartMpsSvc" Before="StopServices">
+        <![CDATA[MPSSVC_START <> "#2"]]>
+      </Custom>
+    </InstallExecuteSequence>
   </Fragment>
 </Wix>

mish/mish.wixproj

@@ -44,6 +44,14 @@
       <HintPath>$(WixExtDir)\WixFirewallExtension.dll</HintPath>
       <Name>WixFirewallExtension</Name>
     </WixExtension>
+    <WixExtension Include="WixUIExtension">
+      <HintPath>$(WixExtDir)\WixUIExtension.dll</HintPath>
+      <Name>WixUIExtension</Name>
+    </WixExtension>
+    <WixExtension Include="WixUtilExtension">
+      <HintPath>$(WixExtDir)\WixUtilExtension.dll</HintPath>
+      <Name>WixUtilExtension</Name>
+    </WixExtension>
   </ItemGroup>
   <Import Project="$(WixTargetsPath)" Condition=" '$(WixTargetsPath)' != '' " />
   <Import Project="$(MSBuildExtensionsPath32)\Microsoft\WiX\v3.x\Wix.targets" Condition=" '$(WixTargetsPath)' == '' AND Exists('$(MSBuildExtensionsPath32)\Microsoft\WiX\v3.x\Wix.targets') " />

miss/miss.cpp

@@ -12,6 +12,7 @@
 #include <assert.h>
 #include <stdlib.h>
 
+#include "relay.h"
 #include "..\version.h"
 
 #pragma comment(lib, "miniupnpc.lib")
@@ -31,13 +32,12 @@ bool getHopsIP4(IN_ADDR* hopAddress, int* hopAddressCount);
 struct UPNPDev* getUPnPDevicesByAddress(IN_ADDR address);
 bool PCPMapPort(PSOCKADDR_STORAGE localAddr, int localAddrLen, PSOCKADDR_STORAGE pcpAddr, int pcpAddrLen, int proto, int port, bool enable, bool indefinite);
 
-#define NL "\n"
-
 #define SERVICE_NAME "MISS"
 #define UPNP_SERVICE_NAME "Moonlight"
 #define POLLING_DELAY_SEC 120
 #define PORT_MAPPING_DURATION_SEC 3600
 #define UPNP_DISCOVERY_DELAY_MS 5000
+#define GAA_INITIAL_SIZE 8192
 
 static struct port_entry {
     int proto;
@@ -53,30 +53,12 @@ static struct port_entry {
     {IPPROTO_UDP, 48010}
 };
 
-static const int k_WolPorts[] = { 7, 9 };
+static const int k_WolPorts[] = { 9, 47009 };
 
-void UPnPCreatePinholeForPort(struct UPNPUrls* urls, struct IGDdatas* data, int proto, const char* myAddr, int port)
-{
-    char uniqueId[8];
-    char protoStr[3];
-    char portStr[6];
+static HANDLE s_StopEvent;
+static CRITICAL_SECTION s_PortMappingUpdateLock;
 
-    snprintf(portStr, sizeof(portStr), "%d", port);
-    snprintf(protoStr, sizeof(protoStr), "%d", proto);
-
-    printf("Creating UPnP IPv6 pinhole for %s %s -> %s...", protoStr, portStr, myAddr);
-
-    // Lease time is in seconds - 7200 = 2 hours
-    int err = UPNP_AddPinhole(urls->controlURL_6FC, data->IPv6FC.servicetype, "empty", portStr, myAddr, portStr, protoStr, "7200", uniqueId);
-    if (err == UPNPCOMMAND_SUCCESS) {
-        printf("OK" NL);
-    }
-    else {
-        printf("ERROR %d (%s)" NL, err, strupnperror(err));
-    }
-}
-
-bool UPnPMapPort(struct UPNPUrls* urls, struct IGDdatas* data, int proto, const char* myAddr, int port, bool enable, bool indefinite)
+bool UPnPMapPort(struct UPNPUrls* urls, struct IGDdatas* data, int proto, const char* myAddr, int port, bool enable, bool indefinite, bool validationPass)
 {
     char intClient[16];
     char intPort[6];
@@ -109,21 +91,47 @@ bool UPnPMapPort(struct UPNPUrls* urls, struct IGDdatas* data, int proto, const
         return false;
     }
 
-    printf("Checking for existing UPnP port mapping for %s %s -> %s...", protoStr, portStr, myAddr);
+    printf("Checking for existing UPnP port mapping for %s %s -> %s %s...", protoStr, portStr, myAddr, computerName);
     int err = UPNP_GetSpecificPortMappingEntry(
         urls->controlURL, data->first.servicetype, portStr, protoStr, nullptr,
         intClient, intPort, desc, enabled, leaseDuration);
     if (err == 714) {
         // NoSuchEntryInArray
-        printf("NOT FOUND" NL);
+        printf("NOT FOUND\n");
+
+        if (validationPass) {
+            // On validation, we found a missing entry. Convert this entry to indefinite
+            // to see if it will stick.
+            indefinite = true;
+        }
+    }
+    else if (err == 606) {
+        printf("UNAUTHORIZED\n");
+
+        // If we're just validating, we're done. We can't know if the entry was
+        // actually applied but we'll return true to avoid false errors if it was.
+        if (validationPass) {
+            return true;
+        }
     }
     else if (err == UPNPCOMMAND_SUCCESS) {
-        if (!strcmp(intClient, myAddr) && !strcmp(desc, myDesc)) {
+        // Some routers change the description, so we can't check that here
+        if (!strcmp(intClient, myAddr)) {
             if (atoi(leaseDuration) == 0) {
-                printf("OK (Permanent)" NL);
+                printf("OK (Static, Internal port: %s)\n", intPort);
+
+                // If we have an existing permanent mapping, we can just leave it alone.
+                if (enable) {
+                    return true;
+                }
             }
             else {
-                printf("OK (%s seconds remaining)" NL, leaseDuration);
+                printf("OK (%s seconds remaining, Internal port: %s)\n", leaseDuration, intPort);
+            }
+
+            // If we're just validating, we found an entry, so we're done.
+            if (validationPass) {
+                return true;
             }
 
             if (!enable) {
@@ -131,17 +139,22 @@ bool UPnPMapPort(struct UPNPUrls* urls, struct IGDdatas* data, int proto, const
                 printf("Deleting UPnP mapping for %s %s -> %s...", protoStr, portStr, myAddr);
                 err = UPNP_DeletePortMapping(urls->controlURL, data->first.servicetype, portStr, protoStr, nullptr);
                 if (err == UPNPCOMMAND_SUCCESS) {
-                    printf("OK" NL);
+                    printf("OK\n");
                 }
                 else {
-                    printf("ERROR %d" NL, err);
+                    printf("ERROR %d\n", err);
                 }
 
                 return true;
             }
         }
         else {
-            printf("CONFLICT: %s %s" NL, intClient, desc);
+            printf("CONFLICT: %s %s\n", intClient, desc);
+
+            // If we're just validating, we found an entry, so we're done.
+            if (validationPass) {
+                return true;
+            }
 
             // Some UPnP IGDs won't let unauthenticated clients delete other conflicting port mappings
             // for security reasons, but we will give it a try anyway. If GameStream is not enabled,
@@ -151,21 +164,25 @@ bool UPnPMapPort(struct UPNPUrls* urls, struct IGDdatas* data, int proto, const
                 printf("Trying to delete conflicting UPnP mapping for %s %s -> %s...", protoStr, portStr, intClient);
                 err = UPNP_DeletePortMapping(urls->controlURL, data->first.servicetype, portStr, protoStr, nullptr);
                 if (err == UPNPCOMMAND_SUCCESS) {
-                    printf("OK" NL);
+                    printf("OK\n");
                 }
                 else if (err == 606) {
-                    printf("UNAUTHORIZED" NL);
+                    printf("UNAUTHORIZED\n");
                     return false;
                 }
                 else {
-                    printf("ERROR %d" NL, err);
+                    printf("ERROR %d\n", err);
                     return false;
                 }
             }
         }
     }
     else {
-        printf("ERROR %d (%s)" NL, err, strupnperror(err));
+        printf("ERROR %d (%s)\n", err, strupnperror(err));
+
+        // If we get a strange error from the router, we'll assume it's some old broken IGDv1
+        // device and only use indefinite lease durations to hopefully avoid confusing it.
+        indefinite = true;
     }
 
     // Bail if GameStream is disabled
@@ -180,115 +197,45 @@ bool UPnPMapPort(struct UPNPUrls* urls, struct IGDdatas* data, int proto, const
     err = UPNP_AddPortMapping(
         urls->controlURL, data->first.servicetype, portStr,
         portStr, myAddr, myDesc, protoStr, nullptr, leaseDuration);
-    if (err == 725 && !indefinite) { // OnlyPermanentLeasesSupported
+    if (err != UPNPCOMMAND_SUCCESS && !indefinite) {
+        // This may be a broken IGD that doesn't like non-static mappings. Try a static
+        // mapping before finally giving up.
         err = UPNP_AddPortMapping(
             urls->controlURL, data->first.servicetype, portStr,
             portStr, myAddr, myDesc, protoStr, nullptr, "0");
-        printf("PERMANENT ");
+        printf("STATIC RETRY ");
+    }
+    else if (indefinite) {
+        printf("STATIC ");
+    }
+    if (err == 718 && proto == IPPROTO_UDP && port >= 47000) { // ConflictInMappingEntry
+        // Some UPnP implementations incorrectly deduplicate on the internal port instead
+        // of the external port, in violation of the UPnP IGD specification. Since GFE creates
+        // mappings on the same internal port as us, those routers break our mappings. To
+        // work around this issue, we run relays for each of the UDP ports on an alternate
+        // internal port. We'll try the alternate port if we get a conflict for a UDP entry.
+        // Given that these are already horribly non-spec compliant, we won't take any chances
+        // and we'll use an indefinite mapping too.
+        char altPortStr[6];
+        snprintf(altPortStr, sizeof(altPortStr), "%d", port + RELAY_PORT_OFFSET);
+        err = UPNP_AddPortMapping(
+            urls->controlURL, data->first.servicetype, portStr,
+            altPortStr, myAddr, myDesc, protoStr, nullptr, "0");
+        printf("ALTERNATE ");
     }
     if (err == UPNPCOMMAND_SUCCESS) {
-        printf("OK" NL);
+        printf("OK\n");
         return true;
     }
     else {
-        printf("ERROR %d (%s)" NL, err, strupnperror(err));
+        printf("ERROR %d (%s)\n", err, strupnperror(err));
         return false;
     }
 }
 
-bool ResolveStableIP6Address(char* tmpAddr)
-{
-    union {
-        IP_ADAPTER_ADDRESSES addresses;
-        char buffer[8192];
-    };
-    ULONG error;
-    ULONG length;
-    PIP_ADAPTER_ADDRESSES currentAdapter;
-    PIP_ADAPTER_UNICAST_ADDRESS currentAddress;
-    in6_addr targetAddress;
-
-    inet_pton(AF_INET6, tmpAddr, &targetAddress);
-
-    // Get a list of all interfaces with IPv6 addresses on the system
-    length = sizeof(buffer);
-    error = GetAdaptersAddresses(AF_INET6,
-        GAA_FLAG_SKIP_ANYCAST |
-        GAA_FLAG_SKIP_MULTICAST |
-        GAA_FLAG_SKIP_DNS_SERVER |
-        GAA_FLAG_SKIP_FRIENDLY_NAME,
-        NULL,
-        &addresses,
-        &length);
-    if (error != ERROR_SUCCESS) {
-        printf("GetAdaptersAddresses() failed: %d" NL, error);
-        return false;
-    }
-
-    currentAdapter = &addresses;
-    currentAddress = nullptr;
-    while (currentAdapter != nullptr) {
-        // First, search for the adapter
-        currentAddress = currentAdapter->FirstUnicastAddress;
-        while (currentAddress != nullptr) {
-            assert(currentAddress->Address.lpSockaddr->sa_family == AF_INET6);
-
-            PSOCKADDR_IN6 currentAddrV6 = (PSOCKADDR_IN6)currentAddress->Address.lpSockaddr;
-
-            if (RtlEqualMemory(&currentAddrV6->sin6_addr, &targetAddress, sizeof(targetAddress))) {
-                // Found interface with matching address
-                break;
-            }
-
-            currentAddress = currentAddress->Next;
-        }
-
-        if (currentAddress != nullptr) {
-            // Get out of the loop if we found the matching address
-            break;
-        }
-
-        currentAdapter = currentAdapter->Next;
-    }
-
-    if (currentAdapter == nullptr) {
-        printf("No adapter found with IPv6 address: %s" NL, tmpAddr);
-        return false;
-    }
-
-    // Now currentAdapter is the adapter we reached the IGD with. Find a suitable
-    // public address that we can use to create the pinhole.
-    currentAddress = currentAdapter->FirstUnicastAddress;
-    while (currentAddress != nullptr) {
-        assert(currentAddress->Address.lpSockaddr->sa_family == AF_INET6);
-
-        PSOCKADDR_IN6 currentAddrV6 = (PSOCKADDR_IN6)currentAddress->Address.lpSockaddr;
-
-        // Exclude temporary addresses and link-local addresses
-        if (currentAddress->SuffixOrigin != IpSuffixOriginRandom && currentAddrV6->sin6_scope_id == 0) {
-            break;
-        }
-
-        currentAddress = currentAddress->Next;
-    }
-
-    if (currentAddress == nullptr) {
-        printf("No suitable alternate address found for %s" NL, tmpAddr);
-        return false;
-    }
-
-    PSOCKADDR_IN6 currentAddrV6 = (PSOCKADDR_IN6)currentAddress->Address.lpSockaddr;
-    inet_ntop(AF_INET6, &currentAddrV6->sin6_addr, tmpAddr, 128);
-
-    return true;
-}
-
 bool GetIP4OnLinkPrefixLength(char* lanAddressString, int* prefixLength)
 {
-    union {
-        IP_ADAPTER_ADDRESSES addresses;
-        char buffer[8192];
-    };
+    PIP_ADAPTER_ADDRESSES addresses;
     ULONG error;
     ULONG length;
     PIP_ADAPTER_ADDRESSES currentAdapter;
@@ -297,22 +244,34 @@ bool GetIP4OnLinkPrefixLength(char* lanAddressString, int* prefixLength)
 
     inet_pton(AF_INET, lanAddressString, &targetAddress);
 
-    // Get a list of all interfaces with IPv4 addresses on the system
-    length = sizeof(buffer);
-    error = GetAdaptersAddresses(AF_INET,
-        GAA_FLAG_SKIP_ANYCAST |
-        GAA_FLAG_SKIP_MULTICAST |
-        GAA_FLAG_SKIP_DNS_SERVER |
-        GAA_FLAG_SKIP_FRIENDLY_NAME,
-        NULL,
-        &addresses,
-        &length);
+    addresses = NULL;
+    length = GAA_INITIAL_SIZE;
+    do {
+        free(addresses);
+        addresses = (PIP_ADAPTER_ADDRESSES)malloc(length);
+        if (addresses == NULL) {
+            printf("malloc(%u) failed\n", length);
+            return false;
+        }
+
+        // Get a list of all interfaces with IPv4 addresses on the system
+        error = GetAdaptersAddresses(AF_INET,
+            GAA_FLAG_SKIP_ANYCAST |
+            GAA_FLAG_SKIP_MULTICAST |
+            GAA_FLAG_SKIP_DNS_SERVER |
+            GAA_FLAG_SKIP_FRIENDLY_NAME,
+            NULL,
+            addresses,
+            &length);
+    } while (error == ERROR_BUFFER_OVERFLOW);
+
     if (error != ERROR_SUCCESS) {
-        printf("GetAdaptersAddresses() failed: %d" NL, error);
+        printf("GetAdaptersAddresses() failed: %d\n", error);
+        free(addresses);
         return false;
     }
 
-    currentAdapter = &addresses;
+    currentAdapter = addresses;
     currentAddress = nullptr;
     while (currentAdapter != nullptr) {
         currentAddress = currentAdapter->FirstUnicastAddress;
@@ -323,6 +282,7 @@ bool GetIP4OnLinkPrefixLength(char* lanAddressString, int* prefixLength)
 
             if (RtlEqualMemory(&currentAddrV4->sin_addr, &targetAddress, sizeof(targetAddress))) {
                 *prefixLength = currentAddress->OnLinkPrefixLength;
+                free(addresses);
                 return true;
             }
 
@@ -332,11 +292,12 @@ bool GetIP4OnLinkPrefixLength(char* lanAddressString, int* prefixLength)
         currentAdapter = currentAdapter->Next;
     }
 
-    printf("No adapter found with IPv4 address: %s" NL, lanAddressString);
+    printf("No adapter found with IPv4 address: %s\n", lanAddressString);
+    free(addresses);
     return false;
 }
 
-bool UPnPHandleDeviceList(struct UPNPDev* list, bool ipv6, bool enable, char* lanAddrOverride, char* wanAddr)
+bool UPnPHandleDeviceList(struct UPNPDev* list, bool enable, char* lanAddrOverride, char* wanAddr)
 {
     struct UPNPUrls urls;
     struct IGDdatas data;
@@ -347,62 +308,35 @@ bool UPnPHandleDeviceList(struct UPNPDev* list, bool ipv6, bool enable, char* la
 
     int ret = UPNP_GetValidIGD(list, &urls, &data, localAddress, sizeof(localAddress));
     if (ret == 0) {
-        printf("No UPnP device found!" NL);
+        printf("No UPnP device found!\n");
         return false;
     }
     else if (ret == 3) {
-        printf("No UPnP IGD found!" NL);
+        printf("No UPnP IGD found!\n");
         FreeUPNPUrls(&urls);
         return false;
     }
     else if (ret == 1) {
-        printf("Found a connected UPnP IGD" NL);
+        printf("Found a connected UPnP IGD (%s)\n", urls.rootdescURL);
     }
     else if (ret == 2) {
-        printf("Found a disconnected UPnP IGD (!)" NL);
+        printf("Found a disconnected (!) UPnP IGD (%s)\n", urls.rootdescURL);
 
         // Even if we are able to add forwarding entries, go ahead and try NAT-PMP
         success = false;
     }
     else {
-        printf("UPNP_GetValidIGD() failed: %d" NL, ret);
+        printf("UPNP_GetValidIGD() failed: %d\n", ret);
         return false;
     }
 
-    if (ipv6) {
-        // Convert what is likely a IPv6 temporary address into
-        // the stable IPv6 address for the same interface.
-        if (ResolveStableIP6Address(localAddress)) {
-            printf("Stable global IPv6 address is: %s" NL, localAddress);
-
-            // Don't try IPv6FC without a control URL
-            if (data.IPv6FC.controlurl[0] != 0) {
-                int firewallEnabled;
-                ret = UPNP_GetFirewallStatus(urls.controlURL_6FC, data.IPv6FC.servicetype, &firewallEnabled, &pinholeAllowed);
-                if (ret == UPNPCOMMAND_SUCCESS) {
-                    printf("UPnP IPv6 firewall control available. Firewall is %s, pinhole is %s" NL,
-                        firewallEnabled ? "enabled" : "disabled",
-                        pinholeAllowed ? "allowed" : "disallowed");
-                }
-                else {
-                    printf("UPnP IPv6 firewall control is unavailable with error %d (%s)" NL, ret, strupnperror(ret));
-                    pinholeAllowed = false;
-                }
-            }
-            else {
-                printf("IPv6 firewall control not supported by UPnP IGD!" NL);
-            }
-        }
+    ret = UPNP_GetExternalIPAddress(urls.controlURL, data.first.servicetype, wanAddr);
+    if (ret == UPNPCOMMAND_SUCCESS) {
+        printf("UPnP IGD WAN address is: %s\n", wanAddr);
     }
     else {
-        ret = UPNP_GetExternalIPAddress(urls.controlURL, data.first.servicetype, wanAddr);
-        if (ret == UPNPCOMMAND_SUCCESS) {
-            printf("UPnP IGD WAN address is: %s" NL, wanAddr);
-        }
-        else {
-            // Empty string
-            *wanAddr = 0;
-        }
+        // Empty string
+        *wanAddr = 0;
     }
 
     // We may be mapping on behalf of another device
@@ -413,45 +347,58 @@ bool UPnPHandleDeviceList(struct UPNPDev* list, bool ipv6, bool enable, char* la
         portMappingInternalAddress = localAddress;
     }
 
+    // Create the port mappings
     for (int i = 0; i < ARRAYSIZE(k_Ports); i++) {
-        if (!ipv6) {
-            if (!UPnPMapPort(&urls, &data, k_Ports[i].proto, portMappingInternalAddress, k_Ports[i].port, enable, false)) {
-                success = false;
-            }
-        }
-        if (pinholeAllowed) {
-            UPnPCreatePinholeForPort(&urls, &data, k_Ports[i].proto, portMappingInternalAddress, k_Ports[i].port);
+        if (!UPnPMapPort(&urls, &data, k_Ports[i].proto, portMappingInternalAddress, k_Ports[i].port, enable, false, false)) {
+            success = false;
         }
     }
 
     // Do a best-effort for IPv4 Wake-on-LAN broadcast mappings
-    if (!ipv6) {
-        for (int i = 0; i < ARRAYSIZE(k_WolPorts); i++) {
-            if (lanAddrOverride == nullptr) {
-                // Map the port to the broadcast address (may not work on all routers). This
-                // ensures delivery even after the ARP entry for this PC times out on the router.
-                int onLinkPrefixLen;
-                if (GetIP4OnLinkPrefixLength(localAddress, &onLinkPrefixLen)) {
-                    int netmask = 0;
-                    for (int j = 0; j < onLinkPrefixLen; j++) {
-                        netmask |= (1 << j);
-                    }
+    for (int i = 0; i < ARRAYSIZE(k_WolPorts); i++) {
+        if (lanAddrOverride == nullptr) {
+            // Map the port to the broadcast address (may not work on all routers). This
+            // ensures delivery even after the ARP entry for this PC times out on the router.
+            int onLinkPrefixLen;
+            if (GetIP4OnLinkPrefixLength(localAddress, &onLinkPrefixLen)) {
+                int netmask = 0;
+                for (int j = 0; j < onLinkPrefixLen; j++) {
+                    netmask |= (1 << j);
+                }
 
-                    in_addr broadcastAddr;
-                    broadcastAddr.S_un.S_addr = inet_addr(localAddress);
-                    broadcastAddr.S_un.S_addr |= ~netmask;
+                in_addr broadcastAddr;
+                broadcastAddr.S_un.S_addr = inet_addr(localAddress);
+                broadcastAddr.S_un.S_addr |= ~netmask;
 
-                    char broadcastAddrStr[128];
-                    inet_ntop(AF_INET, &broadcastAddr, broadcastAddrStr, sizeof(broadcastAddrStr));
+                char broadcastAddrStr[128];
+                inet_ntop(AF_INET, &broadcastAddr, broadcastAddrStr, sizeof(broadcastAddrStr));
 
-                    UPnPMapPort(&urls, &data, IPPROTO_UDP, broadcastAddrStr, k_WolPorts[i], enable, true);
+                UPnPMapPort(&urls, &data, IPPROTO_UDP, broadcastAddrStr, k_WolPorts[i], enable, true, false);
+            }
+        }
+        else {
+            // When we're mapping the WOL ports upstream of our router, we map directly to
+            // the port on the upstream address (likely our router's WAN interface).
+            UPnPMapPort(&urls, &data, IPPROTO_UDP, lanAddrOverride, k_WolPorts[i], enable, true, false);
+        }
+    }
+
+    // Validate the rules are present and correct if they claimed to be added successfully
+    if (success && enable) {
+        // Wait 10 seconds for the router state to quiesce or the stop event to be set
+        printf("Waiting before UPnP port validation...");
+        if (WaitForSingleObject(s_StopEvent, 10000) == WAIT_TIMEOUT) {
+            printf("done\n");
+
+            // Perform the validation pass (converting any now missing entries to permanent ones)
+            for (int i = 0; i < ARRAYSIZE(k_Ports); i++) {
+                if (!UPnPMapPort(&urls, &data, k_Ports[i].proto, portMappingInternalAddress, k_Ports[i].port, enable, false, true)) {
+                    success = false;
                 }
             }
-            else {
-                // When we're mapping the WOL ports upstream of our router, we map directly to
-                // the port on the upstream address (likely our router's WAN interface).
-                UPnPMapPort(&urls, &data, IPPROTO_UDP, lanAddrOverride, k_WolPorts[i], enable, true);
-            }
+        }
+        else {
+            printf("aborted\n");
         }
     }
 
@@ -485,13 +432,13 @@ bool NATPMPMapPort(natpmp_t* natpmp, int proto, int port, bool enable, bool inde
         lifetime = 604800; // 1 week
     }
     else {
-        lifetime = 3600;
+        lifetime = PORT_MAPPING_DURATION_SEC;
     }
 
     printf("Updating NAT-PMP port mapping for %s %d...", proto == IPPROTO_TCP ? "TCP" : "UDP", port);
     int err = sendnewportmappingrequest(natpmp, natPmpProto, port, enable ? port : 0, lifetime);
     if (err < 0) {
-        printf("ERROR %d" NL, err);
+        printf("ERROR %d\n", err);
         return false;
     }
 
@@ -507,7 +454,7 @@ bool NATPMPMapPort(natpmp_t* natpmp, int proto, int port, bool enable, bool inde
         err = getnatpmprequesttimeout(natpmp, &timeout);
         if (err != 0) {
             assert(err == 0);
-            printf("WAIT FAILED: %d" NL, err);
+            printf("WAIT FAILED: %d\n", err);
             return false;
         }
 
@@ -517,31 +464,22 @@ bool NATPMPMapPort(natpmp_t* natpmp, int proto, int port, bool enable, bool inde
     } while (err == NATPMP_TRYAGAIN);
 
     if (err != 0) {
-        printf("FAILED %d" NL, err);
+        printf("FAILED %d\n", err);
         return false;
     }
     else if (response.pnu.newportmapping.lifetime == 0 && !enable) {
-        printf("DELETED" NL);
+        printf("DELETED\n");
         return true;
     }
     else if (response.pnu.newportmapping.mappedpublicport != port) {
-        printf("CONFLICT" NL);
-
-        // Some buggy routers (Untangle) will change the *internal* port when
-        // adjusting a port mapping request that collides. This is why we also
-        // pass privateport back from the response and not from the port we originally
-        // asked for. Warn in this case.
-        if (response.pnu.newportmapping.privateport != port) {
-            printf("Buggy router changed the internal port when handling NAT-PMP conflict! (%d -> %d)" NL,
-                port, response.pnu.newportmapping.privateport);
-        }
+        printf("CONFLICT\n");
 
         // It couldn't assign us the external port we requested and gave us an alternate external port.
         // We can't use this alternate mapping, so immediately release it.
         printf("Deleting unwanted NAT-PMP mapping for %s %d...", proto == IPPROTO_TCP ? "TCP" : "UDP", response.pnu.newportmapping.mappedpublicport);
         err = sendnewportmappingrequest(natpmp, natPmpProto, response.pnu.newportmapping.privateport, 0, 0);
         if (err < 0) {
-            printf("ERROR %d" NL, err);
+            printf("ERROR %d\n", err);
             return false;
         }
         else {
@@ -555,7 +493,7 @@ bool NATPMPMapPort(natpmp_t* natpmp, int proto, int port, bool enable, bool inde
                 err = getnatpmprequesttimeout(natpmp, &timeout);
                 if (err != 0) {
                     assert(err == 0);
-                    printf("WAIT FAILED: %d" NL, err);
+                    printf("WAIT FAILED: %d\n", err);
                     return false;
                 }
 
@@ -565,17 +503,17 @@ bool NATPMPMapPort(natpmp_t* natpmp, int proto, int port, bool enable, bool inde
             } while (err == NATPMP_TRYAGAIN);
 
             if (err == 0) {
-                printf("OK" NL);
+                printf("OK\n");
                 return false;
             }
             else {
-                printf("FAILED %d" NL, err);
+                printf("FAILED %d\n", err);
                 return false;
             }
         }
     }
     else {
-        printf("OK (%d seconds remaining)" NL, response.pnu.newportmapping.lifetime);
+        printf("OK (%d seconds remaining)\n", response.pnu.newportmapping.lifetime);
         return true;
     }
 }
@@ -597,17 +535,11 @@ bool IsGameStreamEnabled()
     error = RegQueryValueExA(key, "EnableStreaming", nullptr, nullptr, (LPBYTE)&enabled, &len);
     RegCloseKey(key);
     if (error != ERROR_SUCCESS) {
-        printf("RegQueryValueExA() failed: %d" NL, error);
+        printf("RegQueryValueExA() failed: %d\n", error);
         return false;
     }
-    else if (!enabled) {
-        printf("GameStream is OFF!" NL);
-        return false;
-    }
-    else {
-        printf("GameStream is ON!" NL);
-        return true;
-    }
+
+    return enabled != 0;
 }
 
 void UpdatePortMappingsForTarget(bool enable, char* targetAddressIP4, char* internalAddressIP4, char* upstreamAddressIP4)
@@ -618,18 +550,18 @@ void UpdatePortMappingsForTarget(bool enable, char* targetAddressIP4, char* inte
     char upstreamAddrNatPmp[128] = {};
     char upstreamAddrUPnP[128] = {};
 
-    printf("Starting port mapping update on %s to %s..." NL,
+    printf("Starting port mapping update on %s to %s...\n",
         targetAddressIP4 ? targetAddressIP4 : "default gateway",
         internalAddressIP4 ? internalAddressIP4 : "local machine");
 
     int natPmpErr = initnatpmp(&natpmp, targetAddressIP4 ? 1 : 0, targetAddressIP4 ? inet_addr(targetAddressIP4) : 0);
     if (natPmpErr != 0) {
-        printf("initnatpmp() failed: %d" NL, natPmpErr);
+        printf("initnatpmp() failed: %d\n", natPmpErr);
     }
     else {
         natPmpErr = sendpublicaddressrequest(&natpmp);
         if (natPmpErr < 0) {
-            printf("sendpublicaddressrequest() failed: %d" NL, natPmpErr);
+            printf("sendpublicaddressrequest() failed: %d\n", natPmpErr);
             closenatpmp(&natpmp);
         }
     }
@@ -643,7 +575,7 @@ void UpdatePortMappingsForTarget(bool enable, char* targetAddressIP4, char* inte
         if (targetAddressIP4 == nullptr) {
             // If we have no target, use discovery to find the first hop
             ipv4Devs = upnpDiscoverAll(UPNP_DISCOVERY_DELAY_MS, nullptr, nullptr, UPNP_LOCAL_PORT_ANY, 0, 2, &upnpErr);
-            printf("UPnP IPv4 IGD discovery completed with error code: %d" NL, upnpErr);
+            printf("UPnP IPv4 IGD discovery completed with error code: %d\n", upnpErr);
         }
         else {
             // We have a specified target, so do discovery against that directly (may be outside our subnet in case of double-NAT)
@@ -652,23 +584,29 @@ void UpdatePortMappingsForTarget(bool enable, char* targetAddressIP4, char* inte
             ipv4Devs = getUPnPDevicesByAddress(addr);
         }
 
+        // Abort if this is an add/update request and we're stopping
+        if (enable && WaitForSingleObject(s_StopEvent, 0) == WAIT_OBJECT_0) {
+            printf("Aborting port mapping update due to stop request\n");
+            goto Exit;
+        }
+
         // Use the delay of discovery to also allow the NAT-PMP endpoint time to respond
         if (natPmpErr >= 0) {
             natpmpresp_t response;
             natPmpErr = readnatpmpresponseorretry(&natpmp, &response);
             if (natPmpErr == 0) {
                 inet_ntop(AF_INET, &response.pnu.publicaddress.addr, upstreamAddrNatPmp, sizeof(upstreamAddrNatPmp));
-                printf("NAT-PMP upstream address is: %s" NL, upstreamAddrNatPmp);
+                printf("NAT-PMP upstream address is: %s\n", upstreamAddrNatPmp);
             }
             else {
-                printf("NAT-PMP public address request failed: %d" NL, natPmpErr);
+                printf("NAT-PMP public address request failed: %d\n", natPmpErr);
                 closenatpmp(&natpmp);
             }
         }
 
         // Don't try NAT-PMP if UPnP succeeds
-        if (UPnPHandleDeviceList(ipv4Devs, false, enable, internalAddressIP4, upstreamAddrUPnP)) {
-            printf("UPnP IPv4 port mapping successful" NL);
+        if (UPnPHandleDeviceList(ipv4Devs, enable, internalAddressIP4, upstreamAddrUPnP)) {
+            printf("UPnP IPv4 port mapping successful\n");
             if (enable) {
                 // We still want to try NAT-PMP if we're removing
                 // rules to ensure any NAT-PMP rules get cleaned up
@@ -682,29 +620,12 @@ void UpdatePortMappingsForTarget(bool enable, char* targetAddressIP4, char* inte
 
     fflush(stdout);
 
-    // Only run IPv6 UPnP discovery on the first hop
-    if (targetAddressIP4 == nullptr) {
-        int upnpErr;
-        struct UPNPDev* ipv6Devs = upnpDiscoverAll(UPNP_DISCOVERY_DELAY_MS, nullptr, nullptr, UPNP_LOCAL_PORT_ANY, 1, 2, &upnpErr);
-        char ipv6WanAddr[128] = {};
-
-        printf("UPnP IPv6 IGD discovery completed with error code: %d" NL, upnpErr);
-
-        // Ignore whether IPv6 succeeded when decided to use NAT-PMP
-
-        UPnPHandleDeviceList(ipv6Devs, true, enable, nullptr, ipv6WanAddr);
-
-        freeUPNPDevlist(ipv6Devs);
-    }
-
-    fflush(stdout);
-
     if (natPmpErr == 0) {
         // NAT-PMP has no description field or other token that we can use to determine
         // if we created the rules we'd be deleting. Since we don't have that, we can't
         // safely remove mappings that could be shared by another machine behind a double NAT.
         if (!enable && targetAddressIP4 != nullptr) {
-            printf("Not removing upstream NAT-PMP mappings on non-default gateway device" NL);
+            printf("Not removing upstream NAT-PMP mappings on non-default gateway device\n");
             tryNatPmp = false;
         }
 
@@ -740,7 +661,7 @@ void UpdatePortMappingsForTarget(bool enable, char* targetAddressIP4, char* inte
             }
 
             if (success) {
-                printf("NAT-PMP IPv4 port mapping successful" NL);
+                printf("NAT-PMP IPv4 port mapping successful\n");
 
                 // Always try all possibilities when disabling to ensure
                 // we completely clean up
@@ -753,15 +674,29 @@ void UpdatePortMappingsForTarget(bool enable, char* targetAddressIP4, char* inte
         closenatpmp(&natpmp);
     }
 
-    // Try PCP for IPv4 if UPnP and NAT-PMP have both failed for the non-default gateway router.
-    // This may be the case for CGN that only supports PCP.
-    if (tryPcp && targetAddressIP4 != nullptr && internalAddressIP4 != nullptr) {
+    // Try PCP for IPv4 if UPnP and NAT-PMP have both failed. This may be the case for CGN that only supports PCP.
+    if (tryPcp) {
         SOCKADDR_IN targetAddr = {};
         SOCKADDR_IN internalAddr = {};
+
         targetAddr.sin_family = AF_INET;
-        targetAddr.sin_addr.S_un.S_addr = inet_addr(targetAddressIP4);
         internalAddr.sin_family = AF_INET;
-        internalAddr.sin_addr.S_un.S_addr = inet_addr(internalAddressIP4);
+
+        if (targetAddressIP4 != nullptr && internalAddressIP4 != nullptr) {
+            targetAddr.sin_addr.S_un.S_addr = inet_addr(targetAddressIP4);
+            internalAddr.sin_addr.S_un.S_addr = inet_addr(internalAddressIP4);
+        }
+        else {
+            MIB_IPFORWARDROW route;
+            DWORD error = GetBestRoute(0, 0, &route);
+            if (error == NO_ERROR) {
+                targetAddr.sin_addr.S_un.S_addr = route.dwForwardNextHop;
+            }
+            else {
+                printf("GetBestRoute() failed: %d\n", error);
+                goto Exit;
+            }
+        }
 
         bool success = true;
         for (int i = 0; i < ARRAYSIZE(k_Ports); i++) {
@@ -786,21 +721,22 @@ void UpdatePortMappingsForTarget(bool enable, char* targetAddressIP4, char* inte
         }
 
         if (success) {
-            printf("PCP IPv4 port mapping successful" NL);
+            printf("PCP IPv4 port mapping successful\n");
         }
     }
 
+Exit:
     // Write this at the end to avoid clobbering an input parameter
     if (upstreamAddrNatPmp[0] != 0 && inet_addr(upstreamAddrNatPmp) != 0) {
-        printf("Using NAT-PMP upstream IPv4 address: %s" NL, upstreamAddrNatPmp);
+        printf("Using NAT-PMP upstream IPv4 address: %s\n", upstreamAddrNatPmp);
         strcpy(upstreamAddressIP4, upstreamAddrNatPmp);
     }
     else if (upstreamAddrUPnP[0] != 0 && inet_addr(upstreamAddrUPnP) != 0) {
-        printf("Using UPnP upstream IPv4 address: %s" NL, upstreamAddrUPnP);
+        printf("Using UPnP upstream IPv4 address: %s\n", upstreamAddrUPnP);
         strcpy(upstreamAddressIP4, upstreamAddrUPnP);
     }
     else {
-        printf("No valid upstream IPv4 address found!" NL);
+        printf("No valid upstream IPv4 address found!\n");
         upstreamAddressIP4[0] = 0;
     }
 }
@@ -836,12 +772,12 @@ void UpdatePortMappings(bool enable)
     char upstreamAddrStr[128];
     unsigned long upstreamAddr;
 
-    printf("Finding upstream IPv4 hops via traceroute..." NL);
+    printf("Finding upstream IPv4 hops via traceroute...\n");
     if (!getHopsIP4(hops, &hopCount)) {
         hopCount = 0;
     }
     else {
-        printf("Found %d hops" NL, hopCount);
+        printf("Found %d hops\n", hopCount);
     }
 
     // getHopsIP4() already skips the default gateway, so 0
@@ -853,10 +789,10 @@ void UpdatePortMappings(bool enable)
     while (upstreamAddrStr[0] != 0 && (upstreamAddr = inet_addr(upstreamAddrStr)) != 0) {
         // We got an upstream address. Let's check if this is a NAT
         if (IsLikelyNAT(upstreamAddr)) {
-            printf("Upstream address %s is likely a NAT" NL, upstreamAddrStr);
+            printf("Upstream address %s is likely a NAT\n", upstreamAddrStr);
 
             if (nextHopIndex >= hopCount) {
-                printf("Traceroute didn't reach this hop! Aborting!" NL);
+                printf("Traceroute didn't reach this hop! Aborting!\n");
                 break;
             }
 
@@ -870,7 +806,7 @@ void UpdatePortMappings(bool enable)
         }
         else {
             // If we reach a proper public IP address, we're done
-            printf("Reached the Internet at hop %d" NL, nextHopIndex);
+            printf("Reached the Internet at hop %d\n", nextHopIndex);
             break;
         }
 
@@ -886,60 +822,105 @@ void NETIOAPI_API_ IpInterfaceChangeNotificationCallback(PVOID context, PMIB_IPI
     SetEvent((HANDLE)context);
 }
 
-void ResetLogFile()
+void ResetLogFile(bool standaloneExe)
 {
-    char oldLogFilePath[MAX_PATH + 1];
-    char currentLogFilePath[MAX_PATH + 1];
+    char timeString[MAX_PATH + 1] = {};
+    SYSTEMTIME time;
 
-    ExpandEnvironmentStringsA("%ProgramData%\\MISS\\miss-old.log", oldLogFilePath, sizeof(oldLogFilePath));
-    ExpandEnvironmentStringsA("%ProgramData%\\MISS\\miss-current.log", currentLogFilePath, sizeof(currentLogFilePath));
+    if (!standaloneExe) {
+        char oldLogFilePath[MAX_PATH + 1];
+        char currentLogFilePath[MAX_PATH + 1];
 
-    // Delete the old log file
-    DeleteFileA(oldLogFilePath);
+        ExpandEnvironmentStringsA("%ProgramData%\\MISS\\miss-old.log", oldLogFilePath, sizeof(oldLogFilePath));
+        ExpandEnvironmentStringsA("%ProgramData%\\MISS\\miss-current.log", currentLogFilePath, sizeof(currentLogFilePath));
 
-    // Rotate the current to the old log file
-    MoveFileA(currentLogFilePath, oldLogFilePath);
+        // Close the existing stdout handle. This is important because otherwise
+        // it may still be open as stdout when we try to MoveFileEx below.
+        fclose(stdout);
 
-    // Redirect stdout to this new file
-    freopen(currentLogFilePath, "w", stdout);
+        // Rotate the current to the old log file
+        MoveFileExA(currentLogFilePath, oldLogFilePath, MOVEFILE_REPLACE_EXISTING);
+
+        // Redirect stdout to this new file
+        if (freopen(currentLogFilePath, "w", stdout) == NULL) {
+            // If we couldn't create a log file, just redirect stdout to NUL.
+            // We have to open _something_ or printf() will crash.
+            freopen("NUL", "w", stdout);
+        }
+    }
 
     // Print a log header
-    printf("Moonlight Internet Streaming Service v" VER_VERSION_STR NL);
+    printf("Moonlight Internet Streaming Service v" VER_VERSION_STR "\n");
+
+    // Print the current time
+    GetSystemTime(&time);
+    GetTimeFormatA(LOCALE_SYSTEM_DEFAULT, 0, &time, "hh':'mm':'ss tt", timeString, ARRAYSIZE(timeString));
+    printf("The current UTC time is: %s\n", timeString);
 }
 
 DWORD WINAPI GameStreamStateChangeThread(PVOID Context)
 {
     HKEY key;
+    DWORD err;
 
-    // We're watching this key that way we can still detect GameStream turning on
-    // if GFE wasn't even installed when our service started
-    DWORD err = RegOpenKeyExA(HKEY_LOCAL_MACHINE, "Software\\NVIDIA Corporation", 0, KEY_READ | KEY_WOW64_64KEY, &key);
-    if (err != ERROR_SUCCESS) {
-        printf("RegOpenKeyExA() failed: %d" NL, err);
-        return err;
-    }
+    do {
+        // We're watching this key that way we can still detect GameStream turning on
+        // if GFE wasn't even installed when our service started
+        do {
+            err = RegOpenKeyExA(HKEY_LOCAL_MACHINE, "Software\\NVIDIA Corporation", 0, KEY_READ | KEY_WOW64_64KEY, &key);
+            if (err != ERROR_SUCCESS) {
+                // Wait 10 seconds and try again
+                Sleep(10000);
+            }
+        } while (err != ERROR_SUCCESS);
 
-    // Notify the main thread when the GameStream state changes
-    bool lastGameStreamState = IsGameStreamEnabled();
-    while ((err = RegNotifyChangeKeyValue(key, true, REG_NOTIFY_CHANGE_LAST_SET, nullptr, false)) == ERROR_SUCCESS) {
-        bool currentGameStreamState = IsGameStreamEnabled();
-        if (lastGameStreamState != currentGameStreamState) {
-            SetEvent((HANDLE)Context);
+        // Notify the main thread when the GameStream state changes
+        bool lastGameStreamState = IsGameStreamEnabled();
+        while ((err = RegNotifyChangeKeyValue(key, true, REG_NOTIFY_CHANGE_LAST_SET, nullptr, false)) == ERROR_SUCCESS) {
+            bool currentGameStreamState = IsGameStreamEnabled();
+            if (lastGameStreamState != currentGameStreamState) {
+                SetEvent((HANDLE)Context);
+            }
+            lastGameStreamState = currentGameStreamState;
         }
-        lastGameStreamState = currentGameStreamState;
-    }
 
-    printf("RegNotifyChangeKeyValue() failed: %d" NL, err);
+        // If the key is deleted (by DDU or similar), we will hit this code path and poll until it comes back.
+        RegCloseKey(key);
+    } while (err == ERROR_KEY_DELETED);
+
     return err;
 }
 
-int Run()
+int Initialize()
+{
+    // Create the stop event
+    s_StopEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
+    if (s_StopEvent == NULL) {
+        return GetLastError();
+    }
+
+    InitializeCriticalSection(&s_PortMappingUpdateLock);
+    return 0;
+}
+
+int Run(bool standaloneExe)
 {
     HANDLE ifaceChangeEvent = CreateEvent(nullptr, true, false, nullptr);
     HANDLE gsChangeEvent = CreateEvent(nullptr, true, false, nullptr);
-    HANDLE events[2] = { ifaceChangeEvent, gsChangeEvent };
+    HANDLE events[3] = { ifaceChangeEvent, gsChangeEvent, s_StopEvent };
 
-    ResetLogFile();
+    ResetLogFile(standaloneExe);
+
+    // Bump the process priority class to above normal. The UDP relay threads will
+    // further raise their own thread priorities to avoid preemption by other activity.
+    SetPriorityClass(GetCurrentProcess(), ABOVE_NORMAL_PRIORITY_CLASS);
+
+    // Create the UDP alternate port relays
+    for (int i = 0; i < ARRAYSIZE(k_Ports); i++) {
+        if (k_Ports[i].proto == IPPROTO_UDP) {
+            StartUdpRelay(k_Ports[i].port);
+        }
+    }
 
     // Create the thread to watch for GameStream state changes
     CreateThread(nullptr, 0, GameStreamStateChangeThread, gsChangeEvent, 0, nullptr);
@@ -951,34 +932,58 @@ int Run()
     for (;;) {
         ResetEvent(gsChangeEvent);
         ResetEvent(ifaceChangeEvent);
-        UpdatePortMappings(IsGameStreamEnabled());
+
+        bool gameStreamEnabled = IsGameStreamEnabled();
+
+        if (gameStreamEnabled) {
+            printf("GameStream is ON!\n");
+        }
+        else {
+            printf("GameStream is OFF!\n");
+        }
+
+        // Acquire the mapping lock and update port mappings
+        if (TryEnterCriticalSection(&s_PortMappingUpdateLock)) {
+            // If the stop event is set, bail out now
+            if (WaitForSingleObject(s_StopEvent, 0) == WAIT_OBJECT_0) {
+                LeaveCriticalSection(&s_PortMappingUpdateLock);
+                return 0;
+            }
+
+            UpdatePortMappings(gameStreamEnabled);
+            LeaveCriticalSection(&s_PortMappingUpdateLock);
+        }
 
         // Refresh when half the duration is expired or if an IP interface
         // change event occurs.
-        printf("Going to sleep..." NL);
+        printf("Going to sleep...\n");
         fflush(stdout);
 
         ULONGLONG beforeSleepTime = GetTickCount64();
         DWORD ret = WaitForMultipleObjects(ARRAYSIZE(events), events, false, POLLING_DELAY_SEC * 1000);
         if (ret == WAIT_OBJECT_0) {
-            ResetLogFile();
+            ResetLogFile(standaloneExe);
 
-            printf("Woke up for interface change notification after %lld seconds" NL,
+            printf("Woke up for interface change notification after %lld seconds\n",
                 (GetTickCount64() - beforeSleepTime) / 1000);
 
             // Wait a little bit for the interface to settle down (DHCP, RA, etc)
             Sleep(10000);
         }
         else if (ret == WAIT_OBJECT_0 + 1) {
-            ResetLogFile();
+            ResetLogFile(standaloneExe);
 
-            printf("Woke up for GameStream state change notification after %lld seconds" NL,
+            printf("Woke up for GameStream state change notification after %lld seconds\n",
                 (GetTickCount64() - beforeSleepTime) / 1000);
         }
+        else if (ret == WAIT_OBJECT_0 + 2) {
+            printf("Woke up for stop notification\n");
+            return 0;
+        }
         else {
-            ResetLogFile();
+            ResetLogFile(standaloneExe);
 
-            printf("Woke up for periodic refresh" NL);
+            printf("Woke up for periodic refresh\n");
         }
     }
 }
@@ -996,14 +1001,21 @@ HandlerEx(DWORD dwControl, DWORD dwEventType, LPVOID lpEventData, LPVOID lpConte
         return NO_ERROR;
 
     case SERVICE_CONTROL_STOP:
+        // Stop future port mapping updates
+        SetEvent(s_StopEvent);
+
         ServiceStatus.dwCurrentState = SERVICE_STOP_PENDING;
         ServiceStatus.dwControlsAccepted = 0;
+        ServiceStatus.dwWaitHint = 120 * 1000; // 2 minutes
         SetServiceStatus(ServiceStatusHandle, &ServiceStatus);
 
+        // Remove existing port mappings
+        EnterCriticalSection(&s_PortMappingUpdateLock);
         printf("Removing UPnP/NAT-PMP/PCP rules after service stop request\n");
         UpdatePortMappings(false);
+        LeaveCriticalSection(&s_PortMappingUpdateLock);
 
-        printf("The service is stopping\n");
+        printf("The service is stopping now\n");
         ServiceStatus.dwCurrentState = SERVICE_STOPPED;
         SetServiceStatus(ServiceStatusHandle, &ServiceStatus);
         return NO_ERROR;
@@ -1021,7 +1033,15 @@ ServiceMain(DWORD dwArgc, LPTSTR *lpszArgv)
 
     ServiceStatusHandle = RegisterServiceCtrlHandlerEx(SERVICE_NAME, HandlerEx, NULL);
     if (ServiceStatusHandle == NULL) {
-        fprintf(stderr, "RegisterServiceCtrlHandlerEx() failed: %d" NL, GetLastError());
+        fprintf(stderr, "RegisterServiceCtrlHandlerEx() failed: %d\n", GetLastError());
+        return;
+    }
+
+    err = Initialize();
+    if (err != 0) {
+        ServiceStatus.dwCurrentState = SERVICE_STOPPED;
+        ServiceStatus.dwWin32ExitCode = err;
+        SetServiceStatus(ServiceStatusHandle, &ServiceStatus);
         return;
     }
 
@@ -1037,7 +1057,7 @@ ServiceMain(DWORD dwArgc, LPTSTR *lpszArgv)
     SetServiceStatus(ServiceStatusHandle, &ServiceStatus);
 
     // Start the service
-    err = Run();
+    err = Run(false);
     if (err != 0) {
         ServiceStatus.dwCurrentState = SERVICE_STOPPED;
         ServiceStatus.dwWin32ExitCode = err;
@@ -1060,8 +1080,8 @@ int main(int argc, char* argv[])
     }
 
     if (argc == 2 && !strcmp(argv[1], "exe")) {
-        Run();
-        return 0;
+        Initialize();
+        return Run(true);
     }
 
     return StartServiceCtrlDispatcher(ServiceTable);

miss/miss.rc

@@ -3,6 +3,7 @@
 
 VS_VERSION_INFO VERSIONINFO
 FILEVERSION     VER_VERSION
+PRODUCTVERSION  VER_VERSION
 BEGIN
     BLOCK "StringFileInfo"
     BEGIN
@@ -11,6 +12,8 @@ BEGIN
             VALUE "CompanyName",        VER_COMPANYNAME_STR
             VALUE "FileDescription",    "Moonlight Internet Streaming Service"
             VALUE "ProductName",        VER_PRODUCTNAME_STR
+            VALUE "FileVersion",        VER_VERSION_STR
+            VALUE "ProductVersion",     VER_VERSION_STR
         END
     END
 

miss/miss.vcxproj

@@ -23,32 +23,32 @@
     <ProjectGuid>{B71C4E7F-0D92-4E19-BBD2-D33F0EF879B1}</ProjectGuid>
     <Keyword>Win32Proj</Keyword>
     <RootNamespace>miss</RootNamespace>
-    <WindowsTargetPlatformVersion>10.0.17134.0</WindowsTargetPlatformVersion>
+    <WindowsTargetPlatformVersion>10.0</WindowsTargetPlatformVersion>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
-    <PlatformToolset>v141</PlatformToolset>
+    <PlatformToolset>v143</PlatformToolset>
     <CharacterSet>NotSet</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
-    <PlatformToolset>v141</PlatformToolset>
+    <PlatformToolset>v143</PlatformToolset>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>NotSet</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
-    <PlatformToolset>v141</PlatformToolset>
+    <PlatformToolset>v143</PlatformToolset>
     <CharacterSet>NotSet</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
-    <PlatformToolset>v141</PlatformToolset>
+    <PlatformToolset>v143</PlatformToolset>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>NotSet</CharacterSet>
   </PropertyGroup>
@@ -93,13 +93,19 @@
       <PrecompiledHeaderFile>
       </PrecompiledHeaderFile>
       <AdditionalIncludeDirectories>..\libs\include;..\libs\include\miniupnpc;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
+      <RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
+      <ControlFlowGuard>Guard</ControlFlowGuard>
+      <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
       <GenerateDebugInformation>true</GenerateDebugInformation>
       <AdditionalLibraryDirectories>..\libs\x86\Debug;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+      <CETCompat>true</CETCompat>
     </Link>
+    <PostBuildEvent>
+      <Command>copy /Y  "$(SolutionDir)libs\x86\Debug\*" "$(TargetDir)"</Command>
+    </PostBuildEvent>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
     <ClCompile>
@@ -111,11 +117,17 @@
       <ConformanceMode>true</ConformanceMode>
       <PrecompiledHeaderFile>
       </PrecompiledHeaderFile>
+      <ControlFlowGuard>Guard</ControlFlowGuard>
+      <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
       <GenerateDebugInformation>true</GenerateDebugInformation>
+      <CETCompat>true</CETCompat>
     </Link>
+    <PostBuildEvent>
+      <Command>copy /Y  "$(SolutionDir)libs\x86\Debug\*" "$(TargetDir)"</Command>
+    </PostBuildEvent>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
     <ClCompile>
@@ -130,7 +142,8 @@
       <PrecompiledHeaderFile>
       </PrecompiledHeaderFile>
       <AdditionalIncludeDirectories>..\libs\include;..\libs\include\miniupnpc;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
+      <RuntimeLibrary>MultiThreadedDLL</RuntimeLibrary>
+      <ControlFlowGuard>Guard</ControlFlowGuard>
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
@@ -138,7 +151,11 @@
       <OptimizeReferences>true</OptimizeReferences>
       <GenerateDebugInformation>true</GenerateDebugInformation>
       <AdditionalLibraryDirectories>..\libs\x86\Release;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+      <CETCompat>true</CETCompat>
     </Link>
+    <PostBuildEvent>
+      <Command>copy /Y  "$(SolutionDir)libs\x86\Release\*" "$(TargetDir)"</Command>
+    </PostBuildEvent>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
     <ClCompile>
@@ -152,17 +169,23 @@
       <ConformanceMode>true</ConformanceMode>
       <PrecompiledHeaderFile>
       </PrecompiledHeaderFile>
+      <ControlFlowGuard>Guard</ControlFlowGuard>
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
       <EnableCOMDATFolding>true</EnableCOMDATFolding>
       <OptimizeReferences>true</OptimizeReferences>
       <GenerateDebugInformation>true</GenerateDebugInformation>
+      <CETCompat>true</CETCompat>
     </Link>
+    <PostBuildEvent>
+      <Command>copy /Y  "$(SolutionDir)libs\x86\Release\*" "$(TargetDir)"</Command>
+    </PostBuildEvent>
   </ItemDefinitionGroup>
   <ItemGroup>
     <ClCompile Include="miss.cpp" />
     <ClCompile Include="pcp.cpp" />
+    <ClCompile Include="relay.cpp" />
     <ClCompile Include="tracer.cpp" />
   </ItemGroup>
   <ItemGroup>
@@ -170,6 +193,7 @@
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\version.h" />
+    <ClInclude Include="relay.h" />
   </ItemGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">

miss/miss.vcxproj.filters

@@ -24,6 +24,9 @@
     <ClCompile Include="pcp.cpp">
       <Filter>Source Files</Filter>
     </ClCompile>
+    <ClCompile Include="relay.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ResourceCompile Include="miss.rc">
@@ -34,5 +37,8 @@
     <ClInclude Include="..\version.h">
       <Filter>Header Files</Filter>
     </ClInclude>
+    <ClInclude Include="relay.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
   </ItemGroup>
 </Project>

miss/pcp.cpp

@@ -118,7 +118,7 @@ bool PCPMapPort(PSOCKADDR_STORAGE localAddr, int localAddrLen, PSOCKADDR_STORAGE
     int bytesRead;
     union {
         PCP_MAP_RESPONSE hdr;
-        char buf[1024];
+        char buf[1100];
     } resp;
     int lifetime;
 
@@ -160,6 +160,17 @@ bool PCPMapPort(PSOCKADDR_STORAGE localAddr, int localAddrLen, PSOCKADDR_STORAGE
         return false;
     }
 
+    // If we didn't get a local address, use the address of the interface we bound to.
+    // NB: We can't do this in all cases because we may be impersonating an upstream
+    // device if we're behind multiple NATs.
+    if (localAddr->ss_family == AF_INET && ((PSOCKADDR_IN)localAddr)->sin_addr.S_un.S_addr == 0) {
+        if (getsockname(sock, (struct sockaddr*)localAddr, &localAddrLen) == SOCKET_ERROR) {
+            printf("getsockname() failed: %d\n", WSAGetLastError());
+            closesocket(sock);
+            return false;
+        }
+    }
+
     reqMsg = {};
     reqMsg.hdr.version = PCP_VERSION;
     reqMsg.hdr.opcode = OPCODE_MAP_REQUEST;
@@ -233,6 +244,10 @@ bool PCPMapPort(PSOCKADDR_STORAGE localAddr, int localAddrLen, PSOCKADDR_STORAGE
         printf("PCP message truncated: %d\n", bytesRead);
         goto fail;
     }
+    else if (resp.hdr.hdr.version != PCP_VERSION) {
+        printf("PCP version mismatch: %x\n", resp.hdr.hdr.version);
+        goto fail;
+    }
     else if (resp.hdr.hdr.opcode != OPCODE_MAP_RESPONSE) {
         printf("PCP message type mismatch: %x\n", resp.hdr.hdr.opcode);
         goto fail;

miss/relay.cpp

@@ -0,0 +1,110 @@
+#define WIN32_LEAN_AND_MEAN
+#include <Windows.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <WinSock2.h>
+#include <Ws2ipdef.h>
+
+#include "relay.h"
+
+typedef struct _UDP_TUPLE {
+    SOCKET socket;
+    unsigned short port;
+} UDP_TUPLE, *PUDP_TUPLE;
+
+DWORD
+WINAPI
+UdpRelayThreadProc(LPVOID Context)
+{
+    PUDP_TUPLE tuple = (PUDP_TUPLE)Context;
+    USHORT nboPort = htons(tuple->port);
+    SOCKADDR_IN lastRemoteAddr;
+
+    // Ensure the relay threads aren't preempted by games or other CPU intensive activity
+    SetThreadPriority(GetCurrentThread(), THREAD_PRIORITY_HIGHEST);
+
+    RtlZeroMemory(&lastRemoteAddr, sizeof(lastRemoteAddr));
+
+    for (;;) {
+        char buffer[4096];
+        SOCKADDR_IN sourceAddr;
+        int sourceAddrLen;
+        int recvLen;
+
+        sourceAddrLen = sizeof(sourceAddr);
+        recvLen = recvfrom(tuple->socket, buffer, sizeof(buffer), 0, (PSOCKADDR)&sourceAddr, &sourceAddrLen);
+        if (recvLen == SOCKET_ERROR) {
+            continue;
+        }
+        
+        SOCKADDR_IN destinationAddr;
+        if (RtlEqualMemory(&sourceAddr.sin_addr, &in4addr_loopback, sizeof(sourceAddr.sin_addr)) && sourceAddr.sin_port == nboPort) {
+            // Traffic incoming from loopback interface - send it to the last remote address
+            destinationAddr = lastRemoteAddr;
+        }
+        else {
+            // Traffic incoming from the remote host - remember the source
+            lastRemoteAddr = sourceAddr;
+
+            // Send it to the normal port via the loopback adapter
+            destinationAddr = sourceAddr;
+            destinationAddr.sin_addr = in4addr_loopback;
+            destinationAddr.sin_port = nboPort;
+        }
+
+        sendto(tuple->socket, buffer, recvLen, 0, (PSOCKADDR)&destinationAddr, sizeof(destinationAddr));
+    }
+
+    closesocket(tuple->socket);
+    free(tuple);
+    return 0;
+}
+
+int StartUdpRelay(unsigned short Port)
+{
+    SOCKET sock;
+    SOCKADDR_IN addr;
+    HANDLE thread;
+    PUDP_TUPLE tuple;
+    int error;
+
+    sock = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
+    if (sock == INVALID_SOCKET) {
+        error = WSAGetLastError();
+        printf("socket() failed: %d\n", error);
+        return error;
+    }
+
+    // Bind to the alternate port
+    RtlZeroMemory(&addr, sizeof(addr));
+    addr.sin_family = AF_INET;
+    addr.sin_port = htons(Port + RELAY_PORT_OFFSET);
+    if (bind(sock, (PSOCKADDR)&addr, sizeof(addr)) == SOCKET_ERROR) {
+        error = WSAGetLastError();
+        printf("bind() failed: %d\n", error);
+        closesocket(sock);
+        return error;
+    }
+
+    tuple = (PUDP_TUPLE)malloc(sizeof(*tuple));
+    if (tuple == NULL) {
+        return ERROR_OUTOFMEMORY;
+    }
+
+    tuple->socket = sock;
+    tuple->port = Port;
+
+    thread = CreateThread(NULL, 0, UdpRelayThreadProc, tuple, 0, NULL);
+    if (thread == NULL) {
+        error = GetLastError();
+        printf("CreateThread() failed: %d\n", error);
+        closesocket(sock);
+        return error;
+    }
+
+    CloseHandle(thread);
+
+    return 0;
+}

miss/relay.h

@@ -0,0 +1,5 @@
+#pragma once
+
+#define RELAY_PORT_OFFSET -10000
+
+int StartUdpRelay(unsigned short Port);

miss/tracer.cpp

@@ -22,6 +22,55 @@ static const char* k_SsdpSearchFormatString =
     "MX: 5\r\n"
     "\r\n";
 
+// Based on logic in https://github.com/miniupnp/miniupnp/blob/master/miniupnpc/minissdpc.c
+static void
+parseReply(const char* reply, int size,
+           const char** location, int *locationsize,
+           const char** st, int* stsize,
+           const char** usn, int* usnsize)
+{
+    int lineStartIdx = 0;
+    int headerEndIdx = 0;
+    for (int i = 0; i < size; i++) {
+        switch (reply[i])
+        {
+        case ':':
+            // Stop parsing the header at the first colon, but ignore subsequent colons
+            if (headerEndIdx == 0) {
+                headerEndIdx = i;
+            }
+            break;
+        case '\r':
+        case '\n':
+            if (headerEndIdx != 0) {
+                // Skip the colon and spaces
+                do { headerEndIdx++; } while (reply[headerEndIdx] == ' ');
+
+                // Check if it's one of the values we care about
+                if (!_strnicmp(reply + lineStartIdx, "location:", 9)) {
+                    *location = reply + headerEndIdx;
+                    *locationsize = i - headerEndIdx;
+                }
+                else if (!_strnicmp(reply + lineStartIdx, "st:", 3)) {
+                    *st = reply + headerEndIdx;
+                    *stsize = i - headerEndIdx;
+                }
+                else if (!_strnicmp(reply + lineStartIdx, "usn:", 4)) {
+                    *usn = reply + headerEndIdx;
+                    *usnsize = i - headerEndIdx;
+                }
+
+                // Move on to the next header value
+                headerEndIdx = 0;
+            }
+            lineStartIdx = i + 1;
+            break;
+        default:
+            break;
+        }
+    }
+}
+
 struct UPNPDev* getUPnPDevicesByAddress(IN_ADDR address)
 {
     SOCKET s;
@@ -47,6 +96,13 @@ struct UPNPDev* getUPnPDevicesByAddress(IN_ADDR address)
         return nullptr;
     }
 
+    // We will be reading all responses at the end, so ensure we have ample buffer space
+    // to allow responses to accumulate without loss.
+    int recvBufferSize = 65535;
+    if (setsockopt(s, SOL_SOCKET, SO_RCVBUF, (char*)&recvBufferSize, sizeof(recvBufferSize)) == SOCKET_ERROR) {
+        printf("setsockopt() failed: %d\n", WSAGetLastError());
+    }
+
     // Send the first search message with HOST set properly
     chars = snprintf(searchBuffer, ARRAYSIZE(searchBuffer), k_SsdpSearchFormatString, inet_ntoa(address));
     if (send(s, searchBuffer, chars, 0) == SOCKET_ERROR) {
@@ -115,38 +171,37 @@ struct UPNPDev* getUPnPDevicesByAddress(IN_ADDR address)
         }
 
         // Parse the header options
-        // SERVER: FreeBSD/11.2-RELEASE-p2 UPnP/1.1 MiniUPnPd/2.0\r\n
-        char* location = nullptr;
-        char* st = nullptr;
-        while (char* headerName = strtok(nullptr, "\r\n:")) {
-            char* headerValue = strtok(nullptr, "\r");
-            if (headerValue == nullptr) {
-                printf("Unexpected end of SSDP header\n");
-                break;
-            }
+        char* remainder = strtok(nullptr, "");
+        const char* loc = nullptr;
+        const char* st = nullptr;
+        const char* usn = ""; // Initialize to empty since it's optional
+        int locSize = 0;
+        int stSize = 0;
+        int usnSize = 0;
+        parseReply(remainder, strlen(remainder),
+            &loc, &locSize, &st, &stSize, &usn, &usnSize);
 
-            // Skip leading spaces
-            while (*headerValue == ' ') headerValue++;
-
-            if (!_stricmp(headerName, "LOCATION")) {
-                location = headerValue;
-            }
-            else if (!_stricmp(headerName, "ST")) {
-                st = headerValue;
-            }
-        }
-
-        if (!location || location[0] == 0 || !st || st[0] == 0) {
-            printf("Required value missing: \"%s\" \"%s\"\n", location, st);
+        if (!loc || locSize == 0 || !st || stSize == 0) {
+            printf("Required value missing: %d %d\n", locSize, stSize);
             continue;
         }
 
-        struct UPNPDev* newDev = (struct UPNPDev*)malloc(sizeof(*newDev) + strlen(location) + strlen(st) + 2);
-        
+        struct UPNPDev* newDev = (struct UPNPDev*)malloc(sizeof(*newDev) + usnSize + locSize + stSize + 3);
+
         newDev->pNext = deviceList;
-        newDev->usn = &newDev->buffer[0]; newDev->buffer[0] = 0;
-        newDev->descURL = strcpy(newDev->usn + strlen(newDev->usn) + 1, location);
-        newDev->st = strcpy(newDev->descURL + strlen(newDev->descURL) + 1, st);
+
+        newDev->usn = &newDev->buffer[0];
+        memcpy(newDev->usn, usn, usnSize);
+        newDev->usn[usnSize] = 0;
+
+        newDev->descURL = newDev->usn + usnSize + 1;
+        memcpy(newDev->descURL, loc, locSize);
+        newDev->descURL[locSize] = 0;
+
+        newDev->st = newDev->descURL + locSize + 1;
+        memcpy(newDev->st, st, stSize);
+        newDev->st[stSize] = 0;
+
         newDev->scope_id = 0; // IPv6 only
 
         deviceList = newDev;
@@ -170,7 +225,7 @@ bool getHopsIP4(IN_ADDR* hopAddress, int* hopAddressCount)
         char replyBuffer[128];
     };
 
-    host = gethostbyname("google.com");
+    host = gethostbyname("moonlight-stream.org");
     if (host == nullptr) {
         printf("gethostbyname() failed: %d\n", WSAGetLastError());
         return false;

mist/mist.cpp

@@ -1,23 +1,23 @@
-#define _CRT_RAND_S
-#define _CRT_SECURE_NO_WARNINGS
-#include <stdlib.h>
+#include "mist.h"
 
-#define WIN32_LEAN_AND_MEAN
-#define _WINSOCK_DEPRECATED_NO_WARNINGS
-#include <Windows.h>
-#include <WinSock2.h>
 #include <Ws2tcpip.h>
 #include <stdio.h>
 #include <assert.h>
 #include <shellapi.h>
 #include <objbase.h>
-
-#include "..\version.h"
+#include <WinHttp.h>
+#include <wtsapi32.h>
+#include <powerbase.h>
+#include <VersionHelpers.h>
+#include <tlhelp32.h>
 
 #pragma comment(lib, "miniupnpc.lib")
 #pragma comment(lib, "libnatpmp.lib")
 #pragma comment(lib, "ws2_32.lib")
 #pragma comment(lib, "iphlpapi.lib")
+#pragma comment(lib, "winhttp.lib")
+#pragma comment(lib, "wtsapi32.lib")
+#pragma comment(lib, "powrprof.lib")
 
 #define MINIUPNP_STATICLIB
 #include <miniupnpc/miniupnpc.h>
@@ -27,7 +27,9 @@
 #define NATPMP_STATICLIB
 #include <natpmp.h>
 
-bool getExternalAddressPortIP4(int proto, unsigned short localPort, PSOCKADDR_IN wanAddr);
+#define LOOPBACK_SERVER_PORT_OFFSET -10000
+
+#define GAA_INITIAL_SIZE 8192
 
 static struct port_entry {
     int proto;
@@ -40,8 +42,13 @@ static struct port_entry {
     {IPPROTO_UDP, 47998, true},
     {IPPROTO_UDP, 47999, true},
     {IPPROTO_UDP, 48000, true},
+
+#if 0
+    // These are not currently used, so let's
+    // avoid testing them for now.
     {IPPROTO_UDP, 48002, true},
     {IPPROTO_UDP, 48010, true}
+#endif
 };
 
 char logFilePath[MAX_PATH + 1];
@@ -52,49 +59,124 @@ enum MessagePriority {
     MpError
 };
 
-void DisplayMessage(const char* message, MessagePriority priority = MpError, bool terminal = true)
+VOID CALLBACK MsgBoxHelpCallback(LPHELPINFO lpHelpInfo)
 {
-    printf("%s\n", message);
+    const char* helpUrl = (const char*)lpHelpInfo->dwContextId;
+
+    if (!helpUrl) {
+        return;
+    }
+
+    // It's recommended to initialize COM before calling ShellExecute()
+    CoInitializeEx(NULL, COINIT_APARTMENTTHREADED | COINIT_DISABLE_OLE1DDE);
+    ShellExecuteA(nullptr, "open", helpUrl, nullptr, nullptr, SW_SHOWNORMAL);
+}
+
+void DisplayMessage(const char* message, const char* helpUrl = nullptr, MessagePriority priority = MpError, bool terminal = true)
+{
+    fprintf(CONSOLE_OUT, "%s\n", message);
+    fprintf(LOG_OUT, "%s\n", message);
 
     if (terminal) {
-        printf("--------------- MISS LOG -------------------\n");
+        char logPath[MAX_PATH + 1];
+        FILE* f;
 
-        char missPath[MAX_PATH + 1];
-        ExpandEnvironmentStringsA("%ProgramData%\\MISS\\miss-current.log", missPath, sizeof(missPath));
-        FILE* f = fopen(missPath, "r");
+        fprintf(LOG_OUT, "--------------- CURRENT MISS LOG -------------------\n");
+
+        ExpandEnvironmentStringsA("%ProgramData%\\MISS\\miss-current.log", logPath, sizeof(logPath));
+        f = fopen(logPath, "r");
         if (f != nullptr) {
             char buffer[1024];
             while (!feof(f)) {
                 int bytesRead = fread(buffer, 1, ARRAYSIZE(buffer), f);
-                fwrite(buffer, 1, bytesRead, stdout);
+                fwrite(buffer, 1, bytesRead, LOG_OUT);
             }
             fclose(f);
         }
         else {
-            printf("Failed to find MISS log\n");
+            fprintf(LOG_OUT, "Failed to find current MISS log\n");
         }
 
-        fflush(stdout);
+        fprintf(LOG_OUT, "\n----------------- OLD MISS LOG ---------------------\n");
+
+        ExpandEnvironmentStringsA("%ProgramData%\\MISS\\miss-old.log", logPath, sizeof(logPath));
+        f = fopen(logPath, "r");
+        if (f != nullptr) {
+            char buffer[1024];
+            while (!feof(f)) {
+                int bytesRead = fread(buffer, 1, ARRAYSIZE(buffer), f);
+                fwrite(buffer, 1, bytesRead, LOG_OUT);
+            }
+            fclose(f);
+        }
+        else {
+            fprintf(LOG_OUT, "Failed to find old MISS log\n");
+        }
+
+        fprintf(LOG_OUT, "--------------- CURRENT GSV6FWD LOG -------------------\n");
+
+        ExpandEnvironmentStringsA("%ProgramData%\\MISS\\GSv6Fwd-current.log", logPath, sizeof(logPath));
+        f = fopen(logPath, "r");
+        if (f != nullptr) {
+            char buffer[1024];
+            while (!feof(f)) {
+                int bytesRead = fread(buffer, 1, ARRAYSIZE(buffer), f);
+                fwrite(buffer, 1, bytesRead, LOG_OUT);
+            }
+            fclose(f);
+        }
+        else {
+            fprintf(LOG_OUT, "Failed to find current GSv6Fwd log\n");
+        }
+
+        fprintf(LOG_OUT, "\n----------------- OLD GSV6FWD LOG ---------------------\n");
+
+        ExpandEnvironmentStringsA("%ProgramData%\\MISS\\GSv6Fwd-old.log", logPath, sizeof(logPath));
+        f = fopen(logPath, "r");
+        if (f != nullptr) {
+            char buffer[1024];
+            while (!feof(f)) {
+                int bytesRead = fread(buffer, 1, ARRAYSIZE(buffer), f);
+                fwrite(buffer, 1, bytesRead, LOG_OUT);
+            }
+            fclose(f);
+        }
+        else {
+            fprintf(LOG_OUT, "Failed to find old GSv6Fwd log\n");
+        }
+
+        fflush(LOG_OUT);
     }
 
-
-    DWORD flags = MB_OK | MB_TOPMOST | MB_SETFOREGROUND;
+    MSGBOXPARAMSA msgParams;
+    msgParams.cbSize = sizeof(msgParams);
+    msgParams.hwndOwner = nullptr;
+    msgParams.hInstance = nullptr;
+    msgParams.lpszText = message;
+    msgParams.lpszCaption = "Moonlight Internet Streaming Tester";
+    msgParams.dwStyle = MB_OK | MB_TOPMOST | MB_SETFOREGROUND;
+    if (helpUrl) {
+        msgParams.dwStyle |= MB_HELP;
+    }
     switch (priority) {
     case MpInfo:
-        flags |= MB_ICONINFORMATION;
+        msgParams.dwStyle |= MB_ICONINFORMATION;
         break;
     case MpWarn:
-        flags |= MB_ICONWARNING;
+        msgParams.dwStyle |= MB_ICONWARNING;
         break;
     case MpError:
-        flags |= MB_ICONERROR;
+        msgParams.dwStyle |= MB_ICONERROR;
         break;
     }
-    MessageBoxA(nullptr, message, "Moonlight Internet Streaming Tester", flags);
+    msgParams.lpfnMsgBoxCallback = MsgBoxHelpCallback;
+    msgParams.dwContextHelpId = (DWORD_PTR)helpUrl;
+    msgParams.dwLanguageId = MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT);
+    MessageBoxIndirectA(&msgParams);
 
     if (priority != MpInfo && terminal) {
-        flags = MB_YESNO | MB_TOPMOST | MB_SETFOREGROUND | MB_ICONINFORMATION;
-        switch (MessageBoxA(nullptr, "Would you like to view the troubleshooting log?",
+        UINT flags = MB_YESNO | MB_TOPMOST | MB_SETFOREGROUND | MB_ICONINFORMATION;
+        switch (MessageBoxA(nullptr, "Would you like to view the troubleshooting log?\n\nYou will need to provide this log if you ask for help on the Moonlight Discord server.",
             "Moonlight Internet Streaming Tester", flags))
         {
         case IDYES:
@@ -106,6 +188,56 @@ void DisplayMessage(const char* message, MessagePriority priority = MpError, boo
     }
 }
 
+bool ExecuteCommand(PCSTR command, PCHAR outputBuffer, DWORD outputBufferLength)
+{
+    SECURITY_ATTRIBUTES attribs;
+    STARTUPINFO si;
+    PROCESS_INFORMATION pi;
+    HANDLE outReadHandle;
+    DWORD bytesRead = 0;
+
+    ZeroMemory(&si, sizeof(si));
+    si.cb = sizeof(si);
+    si.dwFlags = STARTF_USESHOWWINDOW | STARTF_USESTDHANDLES;
+    si.wShowWindow = SW_HIDE;
+
+    ZeroMemory(&attribs, sizeof(attribs));
+    attribs.nLength = sizeof(attribs);
+    attribs.bInheritHandle = TRUE;
+
+    if (!CreatePipe(&outReadHandle, &si.hStdOutput, &attribs, 0))
+    {
+        fprintf(LOG_OUT, "CreatePipe() failed: %d\n", GetLastError());
+        return false;
+    }
+
+    si.hStdError = si.hStdOutput;
+
+    if (!CreateProcess(NULL, (LPSTR)command, NULL, NULL, TRUE, 0, NULL, NULL, &si, &pi))
+    {
+        fprintf(LOG_OUT, "CreateProcess() failed: %d\n", GetLastError());
+        CloseHandle(si.hStdOutput);
+        return false;
+    }
+
+    WaitForSingleObject(pi.hProcess, INFINITE);
+
+    CloseHandle(si.hStdOutput);
+    CloseHandle(pi.hProcess);
+    CloseHandle(pi.hThread);
+
+    if (!ReadFile(outReadHandle, outputBuffer, outputBufferLength, &bytesRead, NULL))
+    {
+        fprintf(LOG_OUT, "ReadFile() failed: %d\n", GetLastError());
+        CloseHandle(outReadHandle);
+        return false;
+    }
+
+    outputBuffer[bytesRead] = 0;
+    CloseHandle(outReadHandle);
+    return true;
+}
+
 bool IsGameStreamEnabled()
 {
     DWORD error;
@@ -115,8 +247,9 @@ bool IsGameStreamEnabled()
 
     error = RegOpenKeyExA(HKEY_LOCAL_MACHINE, "Software\\NVIDIA Corporation\\NvStream", 0, KEY_READ | KEY_WOW64_64KEY, &key);
     if (error != ERROR_SUCCESS) {
-        printf("RegOpenKeyEx() failed: %d\n", error);
-        DisplayMessage("GeForce Experience was not detected on this PC. Make sure you're installing this utility on your GeForce GameStream-compatible PC, not the device running Moonlight.");
+        fprintf(LOG_OUT, "RegOpenKeyEx() failed: %d\n", error);
+        DisplayMessage("GeForce Experience was not detected on this PC. Make sure you're installing this utility on your GeForce GameStream-compatible PC, not the device running Moonlight.",
+            "https://github.com/moonlight-stream/moonlight-docs/wiki/Setup-Guide");
         return false;
     }
 
@@ -126,37 +259,201 @@ bool IsGameStreamEnabled()
     if (error != ERROR_SUCCESS || !enabled) {
         // GFE may not even write EnableStreaming until the user enables GameStream for the first time
         if (error != ERROR_SUCCESS) {
-            printf("RegQueryValueExA() failed: %d\n", error);
+            fprintf(LOG_OUT, "RegQueryValueExA() failed: %d\n", error);
         }
-        DisplayMessage("GameStream is not enabled in GeForce Experience. Please open GeForce Experience settings, navigate to the Shield tab, and turn GameStream on.");
+        DisplayMessage("GameStream is not enabled in GeForce Experience. Please open GeForce Experience settings, navigate to the Shield tab, and turn GameStream on.",
+            "https://github.com/moonlight-stream/moonlight-docs/wiki/Setup-Guide");
         return false;
     }
     else {
-        printf("GeForce Experience installed and GameStream is enabled\n");
+        fprintf(LOG_OUT, "GeForce Experience installed and GameStream is enabled\n");
         return true;
     }
 }
 
+bool IsCurrentlyStreaming()
+{
+    bool ret = false;
+    HANDLE processSnapshot = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
+
+    PROCESSENTRY32 procEntry;
+    procEntry.dwSize = sizeof(procEntry);
+    Process32First(processSnapshot, &procEntry);
+
+    do {
+        // If we find nvstreamer.exe running, we're currently streaming
+        if (_stricmp(procEntry.szExeFile, "nvstreamer.exe") == 0) {
+            ret = true;
+            break;
+        }
+    } while (Process32Next(processSnapshot, &procEntry));
+
+    CloseHandle(processSnapshot);
+
+    return ret;
+}
+
+bool IsConsoleSessionActive()
+{
+    PWTS_SESSION_INFO_1 sessionInfo;
+    DWORD sessionCount;
+    DWORD level;
+    bool ret;
+    DWORD activeSessionId = WTSGetActiveConsoleSessionId();
+
+    if (activeSessionId == 0xFFFFFFFF) {
+        fprintf(LOG_OUT, "No active console session detected\n");
+        return false;
+    }
+
+    level = 1;
+    if (!WTSEnumerateSessionsEx(WTS_CURRENT_SERVER_HANDLE, &level, 0, &sessionInfo, &sessionCount)) {
+        fprintf(LOG_OUT, "WTSEnumerateSessionsEx() failed: %d\n", GetLastError());
+        return false;
+    }
+
+    ret = false;
+    for (int i = 0; i < sessionCount; i++)
+    {
+        if (sessionInfo[i].SessionId == activeSessionId) {
+            if (sessionInfo[i].pUserName != nullptr) {
+                fprintf(LOG_OUT, "Session %d has active user\n", sessionInfo[i].SessionId);
+                ret = true;
+                break;
+            }
+        }
+    }
+
+    WTSFreeMemoryExW(WTSTypeSessionInfoLevel1, sessionInfo, sessionCount);
+    return ret;
+}
+
+bool IsSleepEnabled()
+{
+    SYSTEM_POWER_POLICY powerPolicy;
+
+    if (CallNtPowerInformation(SystemPowerPolicyAc, NULL, 0, &powerPolicy, sizeof(powerPolicy)) < 0) {
+        return false;
+    }
+
+    return powerPolicy.IdleTimeout != 0 && powerPolicy.Idle.Action == PowerActionSleep;
+}
+
+bool IsHibernationEnabled()
+{
+    SYSTEM_POWER_POLICY powerPolicy;
+
+    if (CallNtPowerInformation(SystemPowerPolicyAc, NULL, 0, &powerPolicy, sizeof(powerPolicy)) < 0) {
+        return false;
+    }
+
+    return powerPolicy.DozeS4Timeout != 0 || (powerPolicy.IdleTimeout != 0 && powerPolicy.Idle.Action == PowerActionHibernate);
+}
+
+bool IsLocalNetworkAccessBlocked()
+{
+    MIB_IPFORWARDROW route;
+    DWORD error;
+    SOCKADDR_IN sin;
+    SOCKET s;
+    
+    error = GetBestRoute(0, 0, &route);
+    if (error != NO_ERROR) {
+        fprintf(LOG_OUT, "GetBestRoute() failed: %d\n", error);
+        return false;
+    }
+
+    s = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
+    if (s == INVALID_SOCKET) {
+        fprintf(LOG_OUT, "socket() failed: %d\n", error);
+        return false;
+    }
+
+    RtlZeroMemory(&sin, sizeof(sin));
+    sin.sin_family = AF_INET;
+    sin.sin_addr.S_un.S_addr = route.dwForwardNextHop;
+    sin.sin_port = htons(80);
+
+    if (connect(s, (PSOCKADDR)&sin, sizeof(sin)) == 0) {
+        error = NO_ERROR;
+        fprintf(LOG_OUT, "connect(%s, %d) successful\n", inet_ntoa(sin.sin_addr), ntohs(sin.sin_port));
+    }
+    else {
+        error = WSAGetLastError();
+        fprintf(LOG_OUT, "connect(%s, %d) failed: %d\n", inet_ntoa(sin.sin_addr), ntohs(sin.sin_port), error);
+    }
+
+    closesocket(s);
+
+    return error == WSAEACCES;
+}
+
+bool IsZeroTierInstalled()
+{
+    DWORD error;
+    HKEY key;
+
+    error = RegOpenKeyExA(HKEY_LOCAL_MACHINE, "Software\\ZeroTier, Inc.\\ZeroTier One", 0, KEY_READ | KEY_WOW64_32KEY, &key);
+    if (error != ERROR_SUCCESS) {
+        return false;
+    }
+
+    RegCloseKey(key);
+    return true;
+}
+
+PIP_ADAPTER_ADDRESSES
+AllocAndGetAdaptersAddresses(ULONG Family, ULONG Flags)
+{
+    PIP_ADAPTER_ADDRESSES addresses;
+    ULONG length;
+    ULONG error;
+
+    addresses = NULL;
+    length = GAA_INITIAL_SIZE;
+    do {
+        free(addresses);
+        addresses = (PIP_ADAPTER_ADDRESSES)malloc(length);
+        if (addresses == NULL) {
+            fprintf(LOG_OUT, "malloc(%u) failed\n", length);
+            return NULL;
+        }
+
+        error = GetAdaptersAddresses(Family, Flags, NULL, addresses, &length);
+    } while (error == ERROR_BUFFER_OVERFLOW);
+
+    if (error != ERROR_SUCCESS) {
+        fprintf(LOG_OUT, "GetAdaptersAddresses() failed: %d\n", error);
+        free(addresses);
+        return NULL;
+    }
+
+    return addresses;
+}
+
+
 enum PortTestStatus {
     PortTestOk,
     PortTestError,
     PortTestUnknown
 };
-PortTestStatus TestPort(PSOCKADDR_STORAGE addr, int proto, int port, bool withServer)
+PortTestStatus TestPort(PSOCKADDR_STORAGE addr, PSOCKADDR_STORAGE localBindAddr, int proto, int port, bool withServer, bool isLoopbackRelay, bool mtuTest)
 {
     SOCKET clientSock = INVALID_SOCKET, serverSock = INVALID_SOCKET;
     int err;
 
     clientSock = socket(addr->ss_family, proto == IPPROTO_TCP ? SOCK_STREAM : SOCK_DGRAM, proto);
     if (clientSock == INVALID_SOCKET) {
-        printf("socket() failed: %d\n", WSAGetLastError());
+        fprintf(LOG_OUT, "socket() failed: %d\n", WSAGetLastError());
         return PortTestError;
     }
 
     if (withServer) {
-        serverSock = socket(addr->ss_family, proto == IPPROTO_TCP ? SOCK_STREAM : SOCK_DGRAM, proto);
+        // Even if we are testing IPv6, our server socket should still be on IPv4 to allow the
+        // IPv6 relay to do its job (since it's already bound to all GFE ports on v6)
+        serverSock = socket(AF_INET, proto == IPPROTO_TCP ? SOCK_STREAM : SOCK_DGRAM, proto);
         if (serverSock == INVALID_SOCKET) {
-            printf("socket() failed: %d\n", WSAGetLastError());
+            fprintf(LOG_OUT, "socket() failed: %d\n", WSAGetLastError());
             closesocket(clientSock);
             return PortTestError;
         }
@@ -168,21 +465,22 @@ PortTestStatus TestPort(PSOCKADDR_STORAGE addr, int proto, int port, bool withSe
         if (err == SOCKET_ERROR) {
             if (WSAGetLastError() == WSAEADDRINUSE) {
                 // If someone is already listening (perhaps GFE is currently streaming),
-                // we can proceed if it's a TCP connection.
-                if (proto == IPPROTO_TCP) {
+                // we can proceed if it's a TCP connection unless it's a loopback relay
+                // which would give us a false positive result.
+                if (proto == IPPROTO_TCP && !isLoopbackRelay) {
                     closesocket(serverSock);
                     serverSock = INVALID_SOCKET;
                 }
                 else {
                     // We can't continue to test for UDP ports.
-                    printf("Unknown (in use)\n");
+                    fprintf(LOG_OUT, "Unknown (in use)\n");
                     closesocket(clientSock);
                     closesocket(serverSock);
                     return PortTestUnknown;
                 }
             }
             else {
-                printf("bind() failed: %d\n", WSAGetLastError());
+                fprintf(LOG_OUT, "bind() failed: %d\n", WSAGetLastError());
                 closesocket(clientSock);
                 closesocket(serverSock);
                 return PortTestError;
@@ -192,7 +490,7 @@ PortTestStatus TestPort(PSOCKADDR_STORAGE addr, int proto, int port, bool withSe
         if (proto == IPPROTO_TCP && serverSock != INVALID_SOCKET) {
             err = listen(serverSock, 1);
             if (err == SOCKET_ERROR) {
-                printf("listen() failed: %d\n", WSAGetLastError());
+                fprintf(LOG_OUT, "listen() failed: %d\n", WSAGetLastError());
                 closesocket(clientSock);
                 closesocket(serverSock);
                 return PortTestError;
@@ -200,10 +498,25 @@ PortTestStatus TestPort(PSOCKADDR_STORAGE addr, int proto, int port, bool withSe
         }
     }
 
+    // Perform the explicit bind if a local address was provided
+    if (localBindAddr != nullptr) {
+        SOCKADDR_IN6 bind6;
+        int addrLen = localBindAddr->ss_family == AF_INET ?
+            sizeof(SOCKADDR_IN) : sizeof(SOCKADDR_IN6);
+
+        RtlCopyMemory(&bind6, localBindAddr, addrLen);
+        bind6.sin6_port = 0;
+
+        err = bind(clientSock, (struct sockaddr*)&bind6, addrLen);
+        if (err == SOCKET_ERROR) {
+            fprintf(LOG_OUT, "bind() failed: %d\n", WSAGetLastError());
+        }
+    }
+
     ULONG nbIo = 1;
     err = ioctlsocket(clientSock, FIONBIO, &nbIo);
     if (err == SOCKET_ERROR) {
-        printf("ioctlsocket() failed: %d\n", WSAGetLastError());
+        fprintf(LOG_OUT, "ioctlsocket() failed: %d\n", WSAGetLastError());
         closesocket(clientSock);
         if (serverSock != INVALID_SOCKET) {
             closesocket(serverSock);
@@ -216,32 +529,43 @@ PortTestStatus TestPort(PSOCKADDR_STORAGE addr, int proto, int port, bool withSe
         sizeof(SOCKADDR_IN) : sizeof(SOCKADDR_IN6);
 
     RtlCopyMemory(&sin6, addr, addrLen);
-    sin6.sin6_port = htons(port);
+    sin6.sin6_port = htons(port + (isLoopbackRelay ? LOOPBACK_SERVER_PORT_OFFSET : 0));
 
     if (proto == IPPROTO_TCP) {
         err = connect(clientSock, (struct sockaddr*)&sin6, addrLen);
         if (err == SOCKET_ERROR && WSAGetLastError() != WSAEWOULDBLOCK) {
-            printf("connect() failed: %d\n", WSAGetLastError());
+            fprintf(LOG_OUT, "connect() failed: %d\n", WSAGetLastError());
         }
         else {
             struct timeval timeout = {};
             fd_set fds;
 
             FD_ZERO(&fds);
-            FD_SET(clientSock, &fds);
 
+            if (serverSock != INVALID_SOCKET) {
+                FD_SET(serverSock, &fds);
+            }
+            else {
+                FD_SET(clientSock, &fds);
+            }
+
+            // If we have a server socket, listen for the accept() instead of the
+            // connect() so we can be compatible with the loopback relay.
             timeout.tv_sec = 3;
-            err = select(0, nullptr, &fds, nullptr, &timeout);
+            err = select(0,
+                serverSock != INVALID_SOCKET ? &fds : nullptr,
+                serverSock == INVALID_SOCKET ? &fds : nullptr,
+                nullptr, &timeout);
             if (err == 1) {
-                // Our FD was signalled for connect() completion
-                printf("Success\n");
+                // Our FD was signalled for connect() or accept() completion
+                fprintf(LOG_OUT, "Success\n");
             }
             else if (err == 0) {
                 // Timed out
-                printf("Timeout\n");
+                fprintf(LOG_OUT, "Timeout\n");
             }
             else {
-                printf("select() failed: %d\n", WSAGetLastError());
+                fprintf(LOG_OUT, "select() failed: %d\n", WSAGetLastError());
             }
         }
 
@@ -253,13 +577,22 @@ PortTestStatus TestPort(PSOCKADDR_STORAGE addr, int proto, int port, bool withSe
         return err == 1 ? PortTestOk : PortTestError;
     }
     else {
-        const char testMsg[] = "moonlight-test";
-        err = sendto(clientSock, testMsg, sizeof(testMsg), 0, (struct sockaddr*)&sin6, addrLen);
-        if (err == SOCKET_ERROR) {
-            printf("sendto() failed: %d\n", WSAGetLastError());
-            closesocket(clientSock);
-            closesocket(serverSock);
-            return PortTestError;
+        // Video packets are up to 1040 bytes.
+        const char testMsg[1040] = "moonlight-test";
+
+        // Send several test packets to ensure a random lost packet doesn't make the test fail
+        for (int i = 0; i < 5; i++) {
+            // Send the full payload for MTU tests and the truncated payload for other tests.
+            err = sendto(clientSock, testMsg,
+                mtuTest ? sizeof(testMsg) : strlen(testMsg), 0, (struct sockaddr*)&sin6, addrLen);
+            if (err == SOCKET_ERROR) {
+                fprintf(LOG_OUT, "sendto() failed: %d\n", WSAGetLastError());
+                closesocket(clientSock);
+                closesocket(serverSock);
+                return PortTestError;
+            }
+
+            Sleep(200);
         }
 
         struct timeval timeout = {};
@@ -268,18 +601,18 @@ PortTestStatus TestPort(PSOCKADDR_STORAGE addr, int proto, int port, bool withSe
         FD_ZERO(&fds);
         FD_SET(serverSock, &fds);
 
-        timeout.tv_sec = 3;
+        timeout.tv_sec = 2;
         err = select(0, &fds, nullptr, nullptr, &timeout);
         if (err == 1) {
             // Our FD was signalled for data available
-            printf("Success\n");
+            fprintf(LOG_OUT, "Success\n");
         }
         else if (err == 0) {
             // Timed out
-            printf("Timeout\n");
+            fprintf(LOG_OUT, "Timeout\n");
         }
         else {
-            printf("select() failed: %d\n", WSAGetLastError());
+            fprintf(LOG_OUT, "select() failed: %d\n", WSAGetLastError());
         }
 
         closesocket(clientSock);
@@ -289,80 +622,448 @@ PortTestStatus TestPort(PSOCKADDR_STORAGE addr, int proto, int port, bool withSe
     }
 }
 
-bool TestAllPorts(PSOCKADDR_STORAGE addr, char* portMsg, int portMsgLen)
+PortTestStatus TestHttpPort(PSOCKADDR_STORAGE addr, int port, bool isLoopbackRelay)
+{
+    HINTERNET hSession = nullptr;
+    HINTERNET hConnection = nullptr;
+    HINTERNET hRequest = nullptr;
+    PortTestStatus result;
+
+    hSession = WinHttpOpen(L"MIST", WINHTTP_ACCESS_TYPE_NO_PROXY, WINHTTP_NO_PROXY_NAME, WINHTTP_NO_PROXY_BYPASS, 0);
+    if (hSession == nullptr) {
+        fprintf(LOG_OUT, "WinHttpOpen() failed: %d\n", GetLastError());
+        result = PortTestError;
+        goto Exit;
+    }
+
+    // WinHTTP's default timeouts are very long. Set them to something more reasonable.
+    if (!WinHttpSetTimeouts(hSession, 0, 3000, 5000, 5000)) {
+        fprintf(LOG_OUT, "WinHttpSetTimeouts() failed: %d\n", GetLastError());
+    }
+
+    // Windows 8.1 enabled TLSv1.2 for WinHTTP by default (8.0 enables it for Schannel but not WinHTTP)
+    // https://docs.microsoft.com/en-us/security/engineering/solving-tls1-problem
+    if (!IsWindows8Point1OrGreater()) {
+        DWORD protocols = WINHTTP_FLAG_SECURE_PROTOCOL_TLS1 |
+                          WINHTTP_FLAG_SECURE_PROTOCOL_TLS1_1 |
+                          WINHTTP_FLAG_SECURE_PROTOCOL_TLS1_2;
+
+        if (!WinHttpSetOption(hSession, WINHTTP_OPTION_SECURE_PROTOCOLS, &protocols, sizeof(protocols))) {
+            fprintf(LOG_OUT, "WinHttpSetOption(WINHTTP_OPTION_SECURE_PROTOCOLS) failed: %d\n", GetLastError());
+        }
+    }
+
+    WCHAR urlEscapedAddr[INET6_ADDRSTRLEN + 2];
+    if (addr->ss_family == AF_INET) {
+        InetNtopW(AF_INET, &((struct sockaddr_in*)addr)->sin_addr, urlEscapedAddr, ARRAYSIZE(urlEscapedAddr));
+    }
+    else {
+        // The address string must be escaped for usage in URLs
+        urlEscapedAddr[0] = L'[';
+        InetNtopW(AF_INET6, &((struct sockaddr_in6*)addr)->sin6_addr, &urlEscapedAddr[1], INET6_ADDRSTRLEN);
+        wcscat_s(urlEscapedAddr, L"]");
+    }
+
+    hConnection = WinHttpConnect(hSession, urlEscapedAddr, port + (isLoopbackRelay ? LOOPBACK_SERVER_PORT_OFFSET : 0), NULL);
+    if (hConnection == nullptr) {
+        fprintf(LOG_OUT, "WinHttpConnect() failed: %d\n", GetLastError());
+        result = PortTestError;
+        goto Exit;
+    }
+
+    hRequest = WinHttpOpenRequest(hConnection, L"GET", L"/", NULL, WINHTTP_NO_REFERER, WINHTTP_DEFAULT_ACCEPT_TYPES,
+                                  port == 47984 ? WINHTTP_FLAG_SECURE : 0);
+    if (hConnection == nullptr) {
+        fprintf(LOG_OUT, "WinHttpOpenRequest() failed: %d\n", GetLastError());
+        result = PortTestError;
+        goto Exit;
+    }
+
+    if (!WinHttpSendRequest(hRequest, WINHTTP_NO_ADDITIONAL_HEADERS, 0, WINHTTP_NO_REQUEST_DATA, 0, 0, 0) || !WinHttpReceiveResponse(hRequest, NULL)) {
+        if (GetLastError() == ERROR_WINHTTP_CLIENT_AUTH_CERT_NEEDED) {
+            // This is expected for our HTTPS connection
+            fprintf(LOG_OUT, "Success\n");
+            result = PortTestOk;
+        }
+        else {
+            // CANNOT_CONNECT is the "expected" error
+            if (GetLastError() == ERROR_WINHTTP_CANNOT_CONNECT) {
+                fprintf(LOG_OUT, "Failed\n");
+            }
+            else {
+                fprintf(LOG_OUT, "Failed: %d\n", GetLastError());
+            }
+
+            result = PortTestError;
+        }
+
+        goto Exit;
+    }
+    else {
+        fprintf(LOG_OUT, "Success\n");
+        result = PortTestOk;
+    }
+
+Exit:
+    if (hRequest != nullptr) {
+        WinHttpCloseHandle(hRequest);
+    }
+    if (hConnection != nullptr) {
+        WinHttpCloseHandle(hConnection);
+    }
+    if (hSession != nullptr) {
+        WinHttpCloseHandle(hSession);
+    }
+
+    return result;
+}
+
+bool TestAllPorts(PSOCKADDR_STORAGE addr, PSOCKADDR_STORAGE localBindAddr, char* portMsg, int portMsgLen, bool isLoopbackRelay, bool consolePrint, bool* allPortsFailed = nullptr)
 {
     bool ret = true;
 
+    if (allPortsFailed) {
+        *allPortsFailed = true;
+    }
+
     for (int i = 0; i < ARRAYSIZE(k_Ports); i++) {
-        printf("Testing %s %d...",
-            k_Ports[i].proto == IPPROTO_TCP ? "TCP" : "UDP",
-            k_Ports[i].port);
-        PortTestStatus status = TestPort(addr, k_Ports[i].proto, k_Ports[i].port, k_Ports[i].withServer);
+        PortTestStatus status;
+
+        if (consolePrint) {
+            fprintf(CONSOLE_OUT, "\tTesting %s %d...\n",
+                k_Ports[i].proto == IPPROTO_TCP ? "TCP" : "UDP",
+                k_Ports[i].port);
+        }
+
+        if (!k_Ports[i].withServer && (localBindAddr == nullptr || localBindAddr->ss_family == AF_INET)) {
+            // Test using a real HTTP client if the port wasn't totally dead.
+            // This is required to confirm functionality with the loopback relay.
+            // NB: We can't do this with IPv6 because we're not guaranteed that our outbound traffic
+            // will go out on the correct local IPv6 address, preventing a response from making
+            // it back.
+            assert(k_Ports[i].proto == IPPROTO_TCP);
+            fprintf(LOG_OUT, "Testing TCP %d with HTTP traffic...", k_Ports[i].port);
+            status = TestHttpPort(addr, k_Ports[i].port, isLoopbackRelay);
+        }
+        else {
+            fprintf(LOG_OUT, "Testing %s %d...",
+                k_Ports[i].proto == IPPROTO_TCP ? "TCP" : "UDP",
+                k_Ports[i].port);
+            status = TestPort(addr, localBindAddr, k_Ports[i].proto, k_Ports[i].port,
+                k_Ports[i].withServer, isLoopbackRelay, k_Ports[i].port == 47998);
+        }
+
         if (status != PortTestOk) {
             // If we got an unknown result, assume it matches with whatever
             // we've gotten so far.
             if (status == PortTestError || !ret) {
-                int msgLen = snprintf(portMsg, portMsgLen, "%s %d\n",
-                    k_Ports[i].proto == IPPROTO_TCP ? "TCP" : "UDP",
-                    k_Ports[i].port);
-                portMsg += msgLen;
-                portMsgLen -= msgLen;
+                if (portMsg != NULL && portMsgLen > 0) {
+                    int msgLen = snprintf(portMsg, portMsgLen, "%s %d\n",
+                        k_Ports[i].proto == IPPROTO_TCP ? "TCP" : "UDP",
+                        k_Ports[i].port);
+                    portMsg += msgLen;
+                    portMsgLen -= msgLen;
+                }
 
                 // Keep going to check all ports and report the failing ones
                 ret = false;
             }
         }
+        else if (allPortsFailed) {
+            *allPortsFailed = false;
+        }
     }
 
     return ret;
 }
 
-bool FindLocalInterfaceIP4Address(PSOCKADDR_IN addr)
+bool IsTestServerReachable(struct addrinfo* addrinfo, unsigned short port)
 {
     SOCKET s;
-    struct hostent* host;
+    FD_SET writeFds, exceptFds;
+    int err;
+    struct timeval tv = {};
+    SOCKADDR_STORAGE addr;
+    char testServerStr[INET6_ADDRSTRLEN];
 
-    printf("Finding local IP address...");
+    memcpy(&addr, addrinfo->ai_addr, addrinfo->ai_addrlen);
+    ((PSOCKADDR_IN6)&addr)->sin6_port = htons(port);
 
-    host = gethostbyname("google.com");
-    if (host == nullptr) {
-        printf("gethostbyname() failed: %d\n", WSAGetLastError());
-        return false;
+    if (addr.ss_family == AF_INET) {
+        inet_ntop(AF_INET, &((struct sockaddr_in*)&addr)->sin_addr, testServerStr, sizeof(testServerStr));
+    }
+    else {
+        inet_ntop(AF_INET6, &((struct sockaddr_in6*)&addr)->sin6_addr, testServerStr, sizeof(testServerStr));
     }
 
-    s = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
+    fprintf(LOG_OUT, "Testing reachability of relay server %s...", testServerStr);
+
+    s = socket(addrinfo->ai_family, SOCK_STREAM, IPPROTO_TCP);
     if (s == INVALID_SOCKET) {
-        printf("socket() failed: %d\n", WSAGetLastError());
+        fprintf(LOG_OUT, "socket() failed: %d\n", WSAGetLastError());
         return false;
     }
 
-    SOCKADDR_IN sin = {};
-    sin.sin_family = AF_INET;
-    sin.sin_port = htons(443);
-    sin.sin_addr = *(struct in_addr*)host->h_addr;
-    int err = connect(s, (struct sockaddr*)&sin, sizeof(sin));
+    ULONG nbIo = 1;
+    err = ioctlsocket(s, FIONBIO, &nbIo);
     if (err == SOCKET_ERROR) {
-        printf("connect() failed: %d\n", WSAGetLastError());
+        fprintf(LOG_OUT, "ioctlsocket() failed: %d\n", WSAGetLastError());
         closesocket(s);
         return false;
     }
 
+    err = connect(s, (PSOCKADDR)&addr, addrinfo->ai_addrlen);
+    if (err == SOCKET_ERROR && WSAGetLastError() != WSAEWOULDBLOCK) {
+        fprintf(LOG_OUT, "Unreachable (%d)\n", WSAGetLastError());
+        closesocket(s);
+        return false;
+    }
+
+    FD_ZERO(&writeFds);
+    FD_ZERO(&exceptFds);
+
+    FD_SET(s, &writeFds);
+    FD_SET(s, &exceptFds);
+
+    tv.tv_sec = 3;
+    err = select(0, nullptr, &writeFds, &exceptFds, &tv);
+    if (err == SOCKET_ERROR) {
+        fprintf(LOG_OUT, "select() failed: %d\n", WSAGetLastError());
+        closesocket(s);
+        return false;
+    }
+    else if (err == 0) {
+        fprintf(LOG_OUT, "Unreachable (timeout)\n");
+        closesocket(s);
+        return false;
+    }
+    else {
+        int optlen = sizeof(err);
+        getsockopt(s, SOL_SOCKET, SO_ERROR, (char*)&err, &optlen);
+        closesocket(s);
+
+        if (err != 0 || FD_ISSET(s, &exceptFds)) {
+            fprintf(LOG_OUT, "Unreachable (%d)\n", err);
+            return false;
+        }
+
+        fprintf(LOG_OUT, "Reachable\n");
+        return true;
+    }
+}
+
+bool FindLocalInterfaceIPAddress(int family, PSOCKADDR_STORAGE addr)
+{
+    SOCKET s;
+    struct addrinfo hint = {};
+    struct addrinfo* result;
+    int err;
+
+    fprintf(LOG_OUT, "Finding local %s address...", family == AF_INET ? "IPv4" : "IPv6");
+
+    hint.ai_family = family;
+    hint.ai_socktype = SOCK_STREAM;
+    hint.ai_protocol = IPPROTO_TCP;
+    hint.ai_flags = AI_ADDRCONFIG;
+    err = getaddrinfo("moonlight-stream.org", "443", &hint, &result);
+    if (err != 0 || result == NULL) {
+        // AI_ADDRCONFIG will mask unusable addresses, so we may get nothing
+        // We get WSANO_DATA or WSAHOST_NOT_FOUND depending on whether it's V4 or V6 :(
+        if (err == WSANO_DATA || err == WSAHOST_NOT_FOUND) {
+            fprintf(LOG_OUT, "NONE\n");
+        }
+        else {
+            fprintf(LOG_OUT, "getaddrinfo() failed: %d\n", err);
+        }
+        return false;
+    }
+
+    s = socket(result->ai_family, result->ai_socktype, result->ai_protocol);
+    if (s == INVALID_SOCKET) {
+        fprintf(LOG_OUT, "socket() failed: %d\n", WSAGetLastError());
+        freeaddrinfo(result);
+        return false;
+    }
+
+    err = connect(s, (struct sockaddr*)result->ai_addr, result->ai_addrlen);
+    if (err == SOCKET_ERROR) {
+        fprintf(LOG_OUT, "connect() failed: %d\n", WSAGetLastError());
+        closesocket(s);
+        freeaddrinfo(result);
+        return false;
+    }
+
+    freeaddrinfo(result);
+
     // Determine which local interface we bound to
     int nameLen = sizeof(*addr);
     err = getsockname(s, (struct sockaddr*)addr, &nameLen);
     if (err == SOCKET_ERROR) {
-        printf("getsockname() failed: %d\n", WSAGetLastError());
+        fprintf(LOG_OUT, "getsockname() failed: %d\n", WSAGetLastError());
         closesocket(s);
         return false;
     }
 
-    char addrStr[64];
-    inet_ntop(AF_INET, &addr->sin_addr, addrStr, sizeof(addrStr));
-    printf("%s\n", addrStr);
+    char addrStr[INET6_ADDRSTRLEN];
+    if (addr->ss_family == AF_INET) {
+        inet_ntop(AF_INET, &((struct sockaddr_in*)addr)->sin_addr, addrStr, sizeof(addrStr));
+    }
+    else {
+        // There may be multiple IPv6 addresses on this interface, and chances are that the
+        // outbound address is a temporary IPv6 address which is not meant to receive traffic.
+        // Let's look up a suitable address by finding the correct interface and looking for
+        // an address with a non-random suffix.
+
+        PIP_ADAPTER_ADDRESSES addresses;
+        PIP_ADAPTER_ADDRESSES currentAdapter;
+        PIP_ADAPTER_UNICAST_ADDRESS currentAddress;
+        
+        addresses = AllocAndGetAdaptersAddresses(AF_UNSPEC,
+            GAA_FLAG_SKIP_ANYCAST |
+            GAA_FLAG_SKIP_MULTICAST |
+            GAA_FLAG_SKIP_DNS_SERVER |
+            GAA_FLAG_SKIP_FRIENDLY_NAME);
+        if (addresses == NULL) {
+            return false;
+        }
+
+        // First, find the interface that owns the incoming address
+        currentAdapter = addresses;
+        while (currentAdapter != NULL) {
+            // Check if this interface has the IPv6 address we want
+            currentAddress = currentAdapter->FirstUnicastAddress;
+            while (currentAddress != NULL) {
+                if (currentAddress->Address.lpSockaddr->sa_family == AF_INET6) {
+                    PSOCKADDR_IN6 ifaceAddrV6 = (PSOCKADDR_IN6)currentAddress->Address.lpSockaddr;
+                    if (RtlEqualMemory(&((struct sockaddr_in6*)addr)->sin6_addr, &ifaceAddrV6->sin6_addr, sizeof(IN6_ADDR))) {
+                        break;
+                    }
+                }
+
+                currentAddress = currentAddress->Next;
+            }
+
+            if (currentAddress != NULL) {
+                // It does, bail out
+                break;
+            }
+
+            currentAdapter = currentAdapter->Next;
+        }
+
+        // Check if we found the incoming interface. If not, we'll
+        // just return the IP address as given from getsockname().
+        if (currentAdapter != NULL) {
+            // Now find a non-privacy/non-LL IPv6 address on this interface
+            currentAddress = currentAdapter->FirstUnicastAddress;
+            while (currentAddress != NULL) {
+                if (currentAddress->Address.lpSockaddr->sa_family == AF_INET6) {
+                    // Exclude link-local and privacy addresses and deprecated addresses
+                    PSOCKADDR_IN6 currentAddrV6 = (PSOCKADDR_IN6)currentAddress->Address.lpSockaddr;
+                    if (currentAddrV6->sin6_scope_id == 0 &&
+                        currentAddress->SuffixOrigin != IpSuffixOriginRandom &&
+                        currentAddress->DadState != IpDadStateDeprecated) {
+                        RtlCopyMemory(addr, currentAddress->Address.lpSockaddr, currentAddress->Address.iSockaddrLength);
+                        break;
+                    }
+                }
+
+                currentAddress = currentAddress->Next;
+            }
+        }
+
+        free(addresses);
+
+        inet_ntop(AF_INET6, &((struct sockaddr_in6*)addr)->sin6_addr, addrStr, sizeof(addrStr));
+    }
+    fprintf(LOG_OUT, "%s\n", addrStr);
 
     return true;
 }
 
+bool FindZeroTierInterfaceAddress(PSOCKADDR_STORAGE addr)
+{
+    PIP_ADAPTER_ADDRESSES addresses;
+    PIP_ADAPTER_ADDRESSES currentAdapter;
+    PIP_ADAPTER_UNICAST_ADDRESS currentAddress;
+
+    // Get all IPv4 interfaces
+    addresses = AllocAndGetAdaptersAddresses(AF_INET,
+        GAA_FLAG_SKIP_ANYCAST |
+        GAA_FLAG_SKIP_MULTICAST |
+        GAA_FLAG_SKIP_DNS_SERVER |
+        GAA_FLAG_SKIP_FRIENDLY_NAME);
+    if (addresses == nullptr) {
+        return false;
+    }
+
+    currentAdapter = addresses;
+    while (currentAdapter != NULL) {
+        // Look for ones that correspond to a ZeroTier device
+        if (wcsstr(currentAdapter->Description, L"ZeroTier")) {
+            // Check if this interface has the IP address we want
+            currentAddress = currentAdapter->FirstUnicastAddress;
+            while (currentAddress != NULL) {
+                if (currentAddress->Address.lpSockaddr->sa_family == AF_INET) {
+                    RtlCopyMemory(addr, currentAddress->Address.lpSockaddr, currentAddress->Address.iSockaddrLength);
+                    free(addresses);
+                    return true;
+                }
+
+                currentAddress = currentAddress->Next;
+            }
+        }
+
+        currentAdapter = currentAdapter->Next;
+    }
+
+    free(addresses);
+    return false;
+}
+
+bool FindDuplicateDefaultInterfaces(void)
+{
+    PIP_ADAPTER_ADDRESSES addresses;
+    ULONG error;
+    MIB_IPFORWARDROW defaultRoute;
+    PIP_ADAPTER_ADDRESSES currentAdapter;
+    DWORD matchingInterfaces = 0;
+
+    error = GetBestRoute(0, 0, &defaultRoute);
+    if (error != NO_ERROR) {
+        fprintf(LOG_OUT, "GetBestRoute() failed: %d\n", error);
+        return false;
+    }
+
+    // Get all IPv4 interfaces
+    addresses = AllocAndGetAdaptersAddresses(AF_INET,
+        GAA_FLAG_SKIP_UNICAST |
+        GAA_FLAG_SKIP_ANYCAST |
+        GAA_FLAG_SKIP_MULTICAST |
+        GAA_FLAG_SKIP_DNS_SERVER |
+        GAA_FLAG_INCLUDE_GATEWAYS |
+        GAA_FLAG_SKIP_FRIENDLY_NAME);
+    if (addresses == nullptr) {
+        return false;
+    }
+
+    currentAdapter = addresses;
+    while (currentAdapter != NULL) {
+        if (currentAdapter->OperStatus == IfOperStatusUp &&
+            currentAdapter->FirstGatewayAddress != NULL &&
+            currentAdapter->FirstGatewayAddress->Address.iSockaddrLength == sizeof(SOCKADDR_IN)) {
+            if (((PSOCKADDR_IN)currentAdapter->FirstGatewayAddress->Address.lpSockaddr)->sin_addr.S_un.S_addr == defaultRoute.dwForwardNextHop) {
+                matchingInterfaces++;
+            }
+        }
+
+        currentAdapter = currentAdapter->Next;
+    }
+
+    free(addresses);
+    return matchingInterfaces > 1;
+}
+
 enum UPnPPortStatus {
     NOT_FOUND,
     OK,
@@ -393,28 +1094,28 @@ UPnPPortStatus UPnPCheckPort(struct UPNPUrls* urls, struct IGDdatas* data, int p
         return ERRORED;
     }
 
-    printf("Checking for UPnP port mapping for %s %s -> %s...", protoStr, portStr, myAddr);
+    fprintf(LOG_OUT, "Checking for UPnP port mapping for %s %s -> %s...", protoStr, portStr, myAddr);
     int err = UPNP_GetSpecificPortMappingEntry(
         urls->controlURL, data->first.servicetype, portStr, protoStr, nullptr,
         intClient, intPort, desc, enabled, leaseDuration);
     if (err == 714) {
         // NoSuchEntryInArray
-        printf("NOT FOUND\n");
+        fprintf(LOG_OUT, "NOT FOUND\n");
         return NOT_FOUND;
     }
     else if (err == UPNPCOMMAND_SUCCESS) {
         if (!strcmp(myAddr, intClient)) {
-            printf("OK\n");
+            fprintf(LOG_OUT, "OK (Internal port: %s)\n", intPort);
             return OK;
         }
         else {
-            printf("CONFLICT - %s %s\n", desc, intClient);
+            fprintf(LOG_OUT, "CONFLICT - %s %s\n", desc, intClient);
             snprintf(conflictMessage, 128, "%s (%s)", desc, intClient);
             return CONFLICTED;
         }
     }
     else {
-        printf("ERROR %d\n", err);
+        fprintf(LOG_OUT, "ERROR %d\n", err);
         return ERRORED;
     }
 }
@@ -422,24 +1123,29 @@ UPnPPortStatus UPnPCheckPort(struct UPNPUrls* urls, struct IGDdatas* data, int p
 bool CheckWANAccess(PSOCKADDR_IN wanAddr, PSOCKADDR_IN reportedWanAddr, bool* foundPortForwardingRules, bool* igdDisconnected)
 {
     natpmp_t natpmp;
+    bool foundUpnpIgd = false;
 
+    wanAddr->sin_family = AF_INET;
+    reportedWanAddr->sin_family = AF_INET;
     *foundPortForwardingRules = false;
     *igdDisconnected = false;
 
     bool gotReportedWanAddress = false;
     int natPmpErr = initnatpmp(&natpmp, 0, 0);
     if (natPmpErr != 0) {
-        printf("initnatpmp() failed: %d\n", natPmpErr);
+        fprintf(LOG_OUT, "initnatpmp() failed: %d\n", natPmpErr);
     }
     else {
         natPmpErr = sendpublicaddressrequest(&natpmp);
         if (natPmpErr < 0) {
-            printf("sendpublicaddressrequest() failed: %d\n", natPmpErr);
+            fprintf(LOG_OUT, "sendpublicaddressrequest() failed: %d\n", natPmpErr);
             closenatpmp(&natpmp);
         }
     }
 
     {
+        fprintf(CONSOLE_OUT, "\tTesting UPnP...\n");
+
         int upnpErr;
         struct UPNPDev* ipv4Devs = upnpDiscoverAll(5000, nullptr, nullptr, UPNP_LOCAL_PORT_ANY, 0, 2, &upnpErr);
 
@@ -451,22 +1157,23 @@ bool CheckWANAccess(PSOCKADDR_IN wanAddr, PSOCKADDR_IN reportedWanAddr, bool* fo
         if (ret != 0) {
             // Connected or disconnected IGD
             if (ret == 1 || ret == 2) {
+                foundUpnpIgd = true;
                 if (ret == 2) {
                     *igdDisconnected = true;
                 }
-                printf("Discovered UPnP IGD at: %s\n", urls.controlURL);
-                printf("Detecting WAN IP address via UPnP...");
+                fprintf(LOG_OUT, "Discovered UPnP IGD at: %s\n", urls.controlURL);
+                fprintf(LOG_OUT, "Detecting WAN IP address via UPnP...");
                 ret = UPNP_GetExternalIPAddress(urls.controlURL, data.first.servicetype, wanAddrStr);
                 if (ret == UPNPCOMMAND_SUCCESS && strlen(wanAddrStr) > 0) {
-                    reportedWanAddr->sin_addr.S_un.S_addr = wanAddr->sin_addr.S_un.S_addr = inet_addr(wanAddrStr);
-                    printf("%s\n", wanAddrStr);
+                    reportedWanAddr->sin_addr.S_un.S_addr = inet_addr(wanAddrStr);
+                    fprintf(LOG_OUT, "%s\n", wanAddrStr);
 
-                    if (wanAddr->sin_addr.S_un.S_addr != 0) {
+                    if (reportedWanAddr->sin_addr.S_un.S_addr != 0) {
                         gotReportedWanAddress = true;
                     }
                 }
                 else {
-                    printf("FAILED %d\n", ret);
+                    fprintf(LOG_OUT, "FAILED %d\n", ret);
                 }
 
                 char conflictMessage[512];
@@ -482,7 +1189,7 @@ bool CheckWANAccess(PSOCKADDR_IN wanAddr, PSOCKADDR_IN reportedWanAddr, bool* fo
                     case CONFLICTED:
                         snprintf(conflictMessage, sizeof(conflictMessage),
                             "Detected a port forwarding conflict with another PC on your network: %s\n\n"
-                            "Remove that PC from your network or uninstall the Moonlight Internet Streaming Service from it, then restart your router.",
+                            "Remove that PC from your network or uninstall the Moonlight Internet Streaming Helper from it, then restart your router.",
                             conflictEntry);
                         DisplayMessage(conflictMessage);
                         return false;
@@ -492,49 +1199,57 @@ bool CheckWANAccess(PSOCKADDR_IN wanAddr, PSOCKADDR_IN reportedWanAddr, bool* fo
                 }
             }
             else {
-                printf("No UPnP IGD detected\n");
+                fprintf(LOG_OUT, "No UPnP IGD detected\n");
             }
 
             FreeUPNPUrls(&urls);
         }
         else {
-            printf("No UPnP devices detected\n");
+            fprintf(LOG_OUT, "No UPnP devices detected\n");
         }
     }
 
     // Use the delay of upnpDiscoverAll() to also allow the NAT-PMP endpoint time to respond
     if (natPmpErr >= 0) {
-        printf("Detecting WAN IP address via NAT-PMP...");
+        fprintf(CONSOLE_OUT, "\tTesting NAT-PMP...\n");
+
+        fprintf(LOG_OUT, "Detecting WAN IP address via NAT-PMP...");
 
         natpmpresp_t response;
         natPmpErr = readnatpmpresponseorretry(&natpmp, &response);
         closenatpmp(&natpmp);
 
         if (natPmpErr == 0) {
-            char addrStr[64];
-            reportedWanAddr->sin_addr = wanAddr->sin_addr = response.pnu.publicaddress.addr;
+            char addrStr[INET_ADDRSTRLEN];
+            reportedWanAddr->sin_addr = response.pnu.publicaddress.addr;
             inet_ntop(AF_INET, &response.pnu.publicaddress.addr, addrStr, sizeof(addrStr));
-            printf("%s\n", addrStr);
-            if (wanAddr->sin_addr.S_un.S_addr != 0) {
+            fprintf(LOG_OUT, "%s\n", addrStr);
+            if (reportedWanAddr->sin_addr.S_un.S_addr != 0) {
                 gotReportedWanAddress = true;
+                
+                if (!foundUpnpIgd) {
+                    // Just in case we have a NAT-PMP gateway that doesn't do NAT reflection
+                    // let's assume it's all okay if we got any response at all
+                    *foundPortForwardingRules = true;
+                }
             }
         }
         else {
-            printf("FAILED %d\n", natPmpErr);
+            fprintf(LOG_OUT, "FAILED %d\n", natPmpErr);
         }
     }
 
-    printf("Detecting WAN IP address via STUN...");
-    if (!getExternalAddressPortIP4(IPPROTO_UDP, 0, wanAddr)) {
-        if (!gotReportedWanAddress) {
-            DisplayMessage("Unable to determine your public IP address. Please check your Internet connection.");
-            return false;
-        }
+    fprintf(LOG_OUT, "Detecting WAN IP address via STUN...");
+    fprintf(CONSOLE_OUT, "\tTesting STUN...\n");
+
+    if (!getExternalAddressPortIP4(0, wanAddr)) {
+        DisplayMessage("Unable to determine your public IP address. Please check your Internet connection or try again in a few minutes.");
+        return false;
     }
     else {
-        char addrStr[64];
+        char addrStr[INET_ADDRSTRLEN];
         inet_ntop(AF_INET, &wanAddr->sin_addr, addrStr, sizeof(addrStr));
-        printf("%s\n", addrStr);
+        fprintf(LOG_OUT, "%s\n", addrStr);
 
         if (!gotReportedWanAddress) {
             // If we didn't get anything from UPnP or NAT-PMP, just populate the reported
@@ -546,16 +1261,12 @@ bool CheckWANAccess(PSOCKADDR_IN wanAddr, PSOCKADDR_IN reportedWanAddr, bool* fo
     return true;
 }
 
-bool IsPossibleCGN(PSOCKADDR_IN wanAddr)
+bool IsCGN(PSOCKADDR_IN wanAddr)
 {
     DWORD addr = htonl(wanAddr->sin_addr.S_un.S_addr);
 
-    // 10.0.0.0/8 - ISPs used to use this
-    if ((addr & 0xFF000000) == 0x0A000000) {
-        return true;
-    }
     // 100.64.0.0/10 - RFC6598 official CGN address
-    else if ((addr & 0xFFC00000) == 0x64400000) {
+    if ((addr & 0xFFC00000) == 0x64400000) {
         return true;
     }
 
@@ -585,18 +1296,25 @@ bool IsDoubleNAT(PSOCKADDR_IN wanAddr)
 int main(int argc, char* argv[])
 {
     WSADATA wsaData;
+    SYSTEMTIME time;
+    char timeString[MAX_PATH + 1] = {};
 
     char tempPath[MAX_PATH + 1];
     GetTempPathA(sizeof(tempPath), tempPath);
 
     snprintf(logFilePath, sizeof(logFilePath), "%s\\%s", tempPath, "mis-test.log");
-    freopen(logFilePath, "w", stdout);
+    freopen(logFilePath, "w", LOG_OUT);
 
     // Print a log header
-    printf("Moonlight Internet Streaming Tester v" VER_VERSION_STR "\n");
+    fprintf(LOG_OUT, "Moonlight Internet Streaming Tester v" VER_VERSION_STR "\n");
+
+    // Print the current time
+    GetSystemTime(&time);
+    GetTimeFormatA(LOCALE_SYSTEM_DEFAULT, 0, &time, "hh':'mm':'ss tt", timeString, ARRAYSIZE(timeString));
+    fprintf(LOG_OUT, "The current UTC time is: %s\n", timeString);
 
     // Print a console header
-    fprintf(stderr, "Moonlight Internet Streaming Tester v" VER_VERSION_STR "\n\n");
+    fprintf(CONSOLE_OUT, "Moonlight Internet Streaming Tester v" VER_VERSION_STR "\n\n");
 
     int err = WSAStartup(MAKEWORD(2, 2), &wsaData);
     if (err != NO_ERROR) {
@@ -604,13 +1322,71 @@ int main(int argc, char* argv[])
         return err;
     }
 
-    fprintf(stderr, "Checking if GameStream is enabled...\n");
+    fprintf(CONSOLE_OUT, "Checking if GameStream is enabled...\n");
 
     // First check if GameStream is enabled
     if (!IsGameStreamEnabled()) {
         return -1;
     }
 
+    if (IsCurrentlyStreaming()) {
+        DisplayMessage("The test cannot proceed because a GameStream session is currently running on this PC.\n\n"
+            "Quit the currently running app on this host within Moonlight, or reboot your PC.");
+        return -1;
+    }
+
+    if (!IsConsoleSessionActive()) {
+        DisplayMessage("The system display is currently locked. You must sign in to your PC again to use GameStream.\n\n"
+            "This is most often due to Microsoft Remote Desktop locking the screen. Use an alternate GameStream-compatible remote desktop solution like Chrome Remote Desktop or TeamViewer to unlock the PC and prevent this error in the future.",
+            "https://github.com/moonlight-stream/moonlight-docs/wiki/Internet-Streaming-Errors#display-locked-error");
+        return -1;
+    }
+
+    fprintf(CONSOLE_OUT, "Checking power settings...\n");
+
+    if (IsSleepEnabled()) {
+        DisplayMessage("This computer has sleep mode enabled. Sleep mode may prevent this PC from being available for streaming.\n\n"
+            "Please ensure sleep is disabled in Power Options so this PC is always ready for streaming. Click the Help button for more information.",
+            "https://github.com/moonlight-stream/moonlight-docs/wiki/Internet-Streaming-Errors#sleep-mode-enabled-warning", MpWarn, false);
+    }
+
+    if (IsHibernationEnabled()) {
+        DisplayMessage("This computer has hibernation enabled. Hibernation may prevent this PC from being available for streaming.\n\n"
+            "Please ensure hibernation is disabled in Power Options so this PC is always ready for streaming. Click the Help button for more information.",
+            "https://github.com/moonlight-stream/moonlight-docs/wiki/Internet-Streaming-Errors#hibernation-enabled-warning", MpWarn, false);
+    }
+
+    fprintf(CONSOLE_OUT, "Checking network connections...\n");
+
+    if (IsLocalNetworkAccessBlocked()) {
+        DisplayMessage("Local network access appears to be blocked by another application installed on this PC.\n\n"
+            "If you have firewall or VPN software installed, make sure it is configured to allow applications to access the local network. Click the Help button for guidance on fixing this issue.",
+            "https://github.com/moonlight-stream/moonlight-docs/wiki/Internet-Streaming-Errors#local-network-access-blocked-error");
+        return -1;
+    }
+
+    if (FindDuplicateDefaultInterfaces()) {
+        DisplayMessage("This computer appears to have more than one connection to the same network (like both WiFi and Ethernet, for example).\n\n"
+            "Please disconnect the extra connection(s) to ensure hosting works reliably over the Internet. If you are connected via WiFi and Ethernet, try disabling your WiFi connection.",
+            "https://github.com/moonlight-stream/moonlight-docs/wiki/Internet-Streaming-Errors#multiple-connections-error", MpWarn, false);
+    }
+
+    fprintf(CONSOLE_OUT, "Checking for anti-virus and firewall software...\n");
+
+    char wmicBuf[8192];
+    if (ExecuteCommand("WMIC /Node:localhost /Namespace:\\\\root\\SecurityCenter2 Path AntiVirusProduct Get displayName", wmicBuf, sizeof(wmicBuf))) {
+        fprintf(LOG_OUT, "AV products:\n%s", wmicBuf);
+    }
+    if (ExecuteCommand("WMIC /Node:localhost /Namespace:\\\\root\\SecurityCenter2 Path FirewallProduct Get displayName", wmicBuf, sizeof(wmicBuf))) {
+        fprintf(LOG_OUT, "Firewall products:\n%s", wmicBuf);
+        if (strstr(wmicBuf, "displayName")) {
+            DisplayMessage("Detected anti-virus and/or firewall software installed on this system. This software may interfere with NVIDIA GameStream.\n\n"
+                "Please try temporarily disabling your anti-virus or firewall software if you experience connection issues with Moonlight.",
+                "https://github.com/moonlight-stream/moonlight-docs/wiki/Troubleshooting#known-application-compatibility-issues", MpInfo, false);
+        }
+    }
+
+
     union {
         SOCKADDR_STORAGE ss;
         SOCKADDR_IN sin;
@@ -619,92 +1395,240 @@ int main(int argc, char* argv[])
     char msgBuf[2048];
     char portMsgBuf[512];
 
-    fprintf(stderr, "Testing local GameStream connectivity...\n");
+    fprintf(CONSOLE_OUT, "Testing GameStream connectivity on this PC...\n");
 
     // Try to connect via IPv4 loopback
     ss = {};
     sin.sin_family = AF_INET;
     sin.sin_addr = in4addr_loopback;
-    printf("Testing GameStream ports via loopback\n");
-    if (!TestAllPorts(&ss, portMsgBuf, sizeof(portMsgBuf))) {
+    fprintf(LOG_OUT, "Testing GameStream ports via loopback\n");
+    if (!TestAllPorts(&ss, nullptr, portMsgBuf, sizeof(portMsgBuf), false, true)) {
         snprintf(msgBuf, sizeof(msgBuf),
-            "Local GameStream connectivity check failed. Please try reinstalling GeForce Experience.\n\nThe following ports were not working:\n%s",
-            portMsgBuf);
-        DisplayMessage(msgBuf);
+            "Local GameStream connectivity check failed.\n\nFirst, try reinstalling GeForce Experience. If that doesn't resolve the problem, try temporarily disabling your antivirus and firewall.");
+        DisplayMessage(msgBuf, "https://github.com/moonlight-stream/moonlight-docs/wiki/Troubleshooting");
         return -1;
     }
+    
+    // We do a special limited test pass for ZeroTier
+    if (IsZeroTierInstalled()) {
+        fprintf(LOG_OUT, "Found ZeroTier installed\n");
 
-    if (!FindLocalInterfaceIP4Address(&sin)) {
-        DisplayMessage("Unable to perform GameStream connectivity check. Please check your Internet connection and try again.");
-        return -1;
-    }
-
-    fprintf(stderr, "Testing network GameStream connectivity...\n");
-
-    // Try to connect via LAN IPv4 address
-    printf("Testing GameStream ports via local network\n");
-    if (!TestAllPorts(&ss, portMsgBuf, sizeof(portMsgBuf))) {
-        snprintf(msgBuf, sizeof(msgBuf),
-            "Local network GameStream connectivity check failed. Try temporarily disabling your firewall software or adding firewall exceptions for the following ports:\n%s",
-            portMsgBuf);
-        DisplayMessage(msgBuf);
-        return -1;
-    }
-
-    fprintf(stderr, "Detecting public IP address...\n");
-
-    bool upnpRulesFound, igdDisconnected;
-    SOCKADDR_IN locallyReportedWanAddr;
-    if (!CheckWANAccess(&sin, &locallyReportedWanAddr, &upnpRulesFound, &igdDisconnected)) {
-        return -1;
-    }
-
-    // Detect a double NAT by detecting STUN and and UPnP mismatches
-    if (sin.sin_addr.S_un.S_addr != locallyReportedWanAddr.sin_addr.S_un.S_addr) {
-        printf("Testing GameStream ports via UPnP/NAT-PMP reported WAN address\n");
-
-        // We don't actually care about the outcome here but it's nice to have in logs
-        // to determine whether solving the double NAT will actually make Moonlight work.
-        TestAllPorts((PSOCKADDR_STORAGE)&locallyReportedWanAddr, portMsgBuf, sizeof(portMsgBuf));
-
-        printf("Detected inconsistency between UPnP/NAT-PMP and STUN reported WAN addresses!\n");
-    }
-
-    fprintf(stderr, "Testing Internet GameStream connectivity...\n");
-
-    char wanAddrStr[64];
-    inet_ntop(AF_INET, &sin.sin_addr, wanAddrStr, sizeof(wanAddrStr));
-
-    // Try to connect via WAN IPv4 address
-    printf("Testing GameStream ports via STUN-reported WAN address\n");
-    if (!TestAllPorts(&ss, portMsgBuf, sizeof(portMsgBuf))) {
-        if (IsDoubleNAT(&locallyReportedWanAddr)) {
-            snprintf(msgBuf, sizeof(msgBuf), "Your router appears be connected to the Internet through another router. Make sure both routers have UPnP enabled, or better yet, switch one of the routers into bridge/AP mode.");
-            DisplayMessage(msgBuf);
-        }
-        else if (IsPossibleCGN(&locallyReportedWanAddr)) {
-            snprintf(msgBuf, sizeof(msgBuf), "Your ISP is running a Carrier-Grade NAT that is preventing you from hosting services like Moonlight on the Internet. Contact your ISP and ask for a dedicated public IP address.");
-            DisplayMessage(msgBuf);
-        }
-        else if (igdDisconnected) {
-            snprintf(msgBuf, sizeof(msgBuf), "Internet GameStream connectivity check failed. Make sure UPnP is enabled in your router settings and that you don't have two devices acting as routers connected together.");
-            DisplayMessage(msgBuf);
-        }
-        else if (upnpRulesFound) {
-            snprintf(msgBuf, sizeof(msgBuf), "We found the correct UPnP rules, but we couldn't confirm that they are working. Depending on your router, it may only work when connecting from a different network.\n\n"
-                "You can try streaming from a different network (like cellular data or tethering) by typing the following address into Moonlight's Add PC dialog: %s\n\n"
-                "If that doesn't work, check your router settings for any existing Moonlight port forwarding entries and delete them or try restarting your router.", wanAddrStr);
-            DisplayMessage(msgBuf, MpWarn);
+        if (!FindZeroTierInterfaceAddress(&ss)) {
+            DisplayMessage("ZeroTier appears to be installed on this PC, but it's not connected to a network.\n\n"
+                "If you are trying to host with ZeroTier, connect to your ZeroTier network and restart this test.\n\n"
+                "If not, click OK and this test will continue assuming you aren't using ZeroTier.",
+                "https://github.com/moonlight-stream/moonlight-docs/wiki/Setup-Guide#zerotier", MpInfo, false);
         }
         else {
-            snprintf(msgBuf, sizeof(msgBuf), "Internet GameStream connectivity check failed. Make sure UPnP is enabled in your router settings.\n\nThe following ports were not forwarded properly:\n%s", portMsgBuf);
-            DisplayMessage(msgBuf);
+            char zeroTierAddrStr[INET_ADDRSTRLEN];
+
+            inet_ntop(AF_INET, &sin.sin_addr, zeroTierAddrStr, sizeof(zeroTierAddrStr));
+
+            fprintf(LOG_OUT, "Found ZeroTier connected with address: %s\n", zeroTierAddrStr);
+
+            if (strstr(zeroTierAddrStr, "169.254.")) {
+                DisplayMessage("ZeroTier is active, but this PC has not been authorized to connect to your ZeroTier network.\n\n"
+                    "Make sure you check the Auth checkbox for all network members on the ZeroTier Networks webpage.",
+                    "https://github.com/moonlight-stream/moonlight-docs/wiki/Setup-Guide#zerotier");
+                return -1;
+            }
+
+            // Try to connect via ZeroTier address
+            fprintf(CONSOLE_OUT, "Testing GameStream connectivity using ZeroTier...\n");
+            fprintf(LOG_OUT, "Testing GameStream ports via ZeroTier\n");
+            if (!TestAllPorts(&ss, nullptr, portMsgBuf, sizeof(portMsgBuf), false, true)) {
+                snprintf(msgBuf, sizeof(msgBuf),
+                    "ZeroTier connectivity check failed. This is almost always caused by a firewall on your computer blocking the connection.\n\nTry temporarily disabling your antivirus and firewall.");
+                DisplayMessage(msgBuf, "https://github.com/moonlight-stream/moonlight-docs/wiki/Troubleshooting");
+                return -1;
+            }
+
+            // If we get here, our testing is complete for ZeroTier
+            snprintf(msgBuf, sizeof(msgBuf), "This PC is ready to host over the Internet with ZeroTier!\n\n"
+                "Don't forget to connect to your ZeroTier network on your client before streaming over the Internet.\n\n"
+                "After connecting ZeroTier, type following address into Moonlight's Add PC dialog: %s", zeroTierAddrStr);
+            DisplayMessage(msgBuf, nullptr, MpInfo);
+            return 0;
         }
+    }
+
+    bool hasV4Connectivity, hasV6Connectivity;
+    SOCKADDR_STORAGE v4, v6;
+    {
+        hasV4Connectivity = FindLocalInterfaceIPAddress(AF_INET, &v4);
+        hasV6Connectivity = FindLocalInterfaceIPAddress(AF_INET6, &v6);
+
+        // Prefer v4 connectivity because that's what GFE uses natively
+        if (hasV4Connectivity) {
+            ss = v4;
+        }
+        else if (hasV6Connectivity) {
+            ss = v6;
+        }
+        else {
+            DisplayMessage("Unable to perform GameStream connectivity check. Please check your Internet connection and try again.");
+            return -1;
+        }
+    }
+
+    fprintf(CONSOLE_OUT, "Testing GameStream connectivity on your local network...\n");
+
+    // Try to connect via LAN address
+    fprintf(LOG_OUT, "Testing GameStream ports via local network\n");
+    if (!TestAllPorts(&ss, nullptr, portMsgBuf, sizeof(portMsgBuf), false, true)) {
+        snprintf(msgBuf, sizeof(msgBuf),
+            "Local network GameStream connectivity check failed. This is almost always caused by a firewall on your computer blocking the connection.\n\nTry temporarily disabling your antivirus and firewall.");
+        DisplayMessage(msgBuf, "https://github.com/moonlight-stream/moonlight-docs/wiki/Troubleshooting");
         return -1;
     }
 
-    snprintf(msgBuf, sizeof(msgBuf), "All tests passed! You should be able to stream by typing the following address into Moonlight's Add PC dialog: %s", wanAddrStr);
-    DisplayMessage(msgBuf, MpInfo);
+    bool igdDisconnected;
+    SOCKADDR_IN locallyReportedWanAddr;
+    char wanAddrStr[INET6_ADDRSTRLEN];
 
-    return 0;
+    if (ss.ss_family == AF_INET) {
+        bool rulesFound;
+
+        fprintf(CONSOLE_OUT, "Detecting public IP address...\n");
+
+        if (!CheckWANAccess(&sin, &locallyReportedWanAddr, &rulesFound, &igdDisconnected)) {
+            return -1;
+        }
+
+        // Detect a double NAT by detecting STUN and and UPnP mismatches
+        if (sin.sin_addr.S_un.S_addr != locallyReportedWanAddr.sin_addr.S_un.S_addr) {
+            fprintf(LOG_OUT, "Testing GameStream ports via UPnP/NAT-PMP reported WAN address\n");
+
+            // We don't actually care about the outcome here but it's nice to have in logs
+            // to determine whether solving the double NAT will actually make Moonlight work.
+            TestAllPorts((PSOCKADDR_STORAGE)&locallyReportedWanAddr, &ss, portMsgBuf, sizeof(portMsgBuf), false, false);
+
+            fprintf(LOG_OUT, "Detected inconsistency between UPnP/NAT-PMP and STUN reported WAN addresses!\n");
+        }
+
+        inet_ntop(AF_INET, &sin.sin_addr, wanAddrStr, sizeof(wanAddrStr));
+    }
+    else {
+        // Go directly to the relay check if we have only IPv6 connectivity
+        igdDisconnected = false;
+        locallyReportedWanAddr = {};
+    }
+
+    struct addrinfo hint = {};
+    struct addrinfo* result;
+
+    hint.ai_family = AF_UNSPEC;
+    hint.ai_flags = AI_ADDRCONFIG;
+    err = getaddrinfo("loopback-v2.moonlight-stream.org", NULL, &hint, &result);
+    if (err != 0 || result == NULL) {
+        fprintf(LOG_OUT, "getaddrinfo() failed: %d\n", err);
+    }
+    else {
+        bool testServerWasReachable = false;
+        bool allPortsFailedOnV4 = true;
+
+        // First try the relay server over IPv4. If this passes, it's considered a full success
+        fprintf(LOG_OUT, "Testing GameStream ports via IPv4 loopback server\n");
+        for (struct addrinfo* current = result; current != NULL; current = current->ai_next) {
+            if (current->ai_family == AF_INET) {
+                fprintf(CONSOLE_OUT, "Testing GameStream connectivity over the Internet using a relay server...\n");
+
+                if (!IsTestServerReachable(current, 443)) {
+                    fprintf(CONSOLE_OUT, "Skipping unreachable relay server...\n");
+                    continue;
+                }
+
+                testServerWasReachable = true;
+
+                if (TestAllPorts((PSOCKADDR_STORAGE)current->ai_addr, &v4, portMsgBuf, sizeof(portMsgBuf), true, true, &allPortsFailedOnV4)) {
+                    freeaddrinfo(result);
+                    snprintf(msgBuf, sizeof(msgBuf), "This PC is ready to host over the Internet!\n\n"
+                        "Do not uninstall the Moonlight Internet Hosting Tool, unless you no longer want to stream over the Internet. It needs to remain installed on your PC to maintain the port forwarding entries on your router.\n\n"
+                        "For the easiest setup, you can simply pair Moonlight to your gaming PC while they are both on the same network and Internet streaming will work automatically.\n\n"
+                        "If your client is not connected to the same network as your gaming PC, you can type the following address into Moonlight's Add PC dialog: %s",
+                        wanAddrStr);
+                    DisplayMessage(msgBuf, nullptr, MpInfo);
+                    return 0;
+                }
+                else {
+                    // Tested against a working server and it failed
+                    break;
+                }
+            }
+        }
+
+        // If that fails, try the relay server over IPv6. If this passes, it will be a partial success
+        fprintf(LOG_OUT, "Testing GameStream ports via IPv6 loopback server\n");
+        for (struct addrinfo* current = result; current != NULL; current = current->ai_next) {
+            if (current->ai_family == AF_INET6) {
+                fprintf(CONSOLE_OUT, "Testing GameStream connectivity over the Internet using an IPv6 relay server...\n");
+
+                if (!IsTestServerReachable(current, 443)) {
+                    fprintf(CONSOLE_OUT, "Skipping unreachable IPv6 relay server...\n");
+                    continue;
+                }
+
+                testServerWasReachable = true;
+
+                // Pass the portMsgBuf only if we've detected an IPv6-only setup. Otherwise, we want to preserve
+                // the failing ports from the IPv4 to display in the error dialog.
+                if (TestAllPorts((PSOCKADDR_STORAGE)current->ai_addr, &v6,
+                                    ss.ss_family == AF_INET6 ? portMsgBuf : NULL,
+                                    ss.ss_family == AF_INET6 ? sizeof(portMsgBuf) : 0, true, true)) {
+                    // We will terminate the test at the IPv6 limited connectivity warning in the following cases:
+                    // 1) Double-NAT/CGN - indicates the connection is fundamentally limited to IPv6 for end-to-end connectivity
+                    // 2) IPv6-only - indicates the connection is fundamentally limited to IPv6 for all connectivity
+                    // 3) All ports failed the test with our IPv4 relay - This is one final heuristic to weed out IPv4 misconfigurations. If we have some ports open,
+                    //                                                    it clearly indicates IPv4 support is possible, just currently misconfigured.
+                    //
+                    // Our last (implicit) heuristic is that we actually managed to establish an IPv6 connection. This means that there was either
+                    // no IPv6 firewall (hopefully not) or that we were able to talk to a PCP/IGDv6 gateway to allow us through. Hopefully if we have
+                    // a gateway that is unresponsive to UPnP/NAT-PMP, we wouldn't even be able to establish this connection so we would inherently fall
+                    // to the checks below for IPv4 issues.
+                    if (IsDoubleNAT(&locallyReportedWanAddr) || igdDisconnected || IsCGN(&locallyReportedWanAddr) || ss.ss_family == AF_INET6 || allPortsFailedOnV4) {
+                        snprintf(msgBuf, sizeof(msgBuf), "This PC has limited connectivity for Internet hosting. It will work only for clients on certain networks.\n\n"
+                            "If you want to try streaming with this configuration, you must pair Moonlight to your gaming PC from your home network before trying to stream over the Internet.\n\n"
+                            "To get full connectivity, please contact your ISP and ask for a \"public IPv4 address\" which they may offer for free upon request. For more information and workarounds, click the Help button.");
+                        DisplayMessage(msgBuf, "https://github.com/moonlight-stream/moonlight-docs/wiki/Internet-Streaming-Errors#limited-connectivity-for-hosting-error", MpWarn);
+                        freeaddrinfo(result);
+                        return 0;
+                    }
+                }
+
+                // Tested against a IPv6 working server
+                break;
+            }
+        }
+
+        freeaddrinfo(result);
+
+        if (!testServerWasReachable) {
+            snprintf(msgBuf, sizeof(msgBuf), "None of Moonlight's connection testing servers were reachable from your PC. Check your Internet connection and try again later.");
+            DisplayMessage(msgBuf);
+            return 0;
+        }
+    }
+    // Many UPnP devices report IGD disconnected when double-NATed. If it was really offline,
+    // we probably would not have even gotten past STUN.
+    //
+    // We try to tell double-NAT from CGN by checking if IPv6 connectivity is available. If it
+    // is, we assume we're in a DS-Lite or similar configuration. If not, we'll assume it's a
+    // real double-NAT setup.
+    if (IsCGN(&locallyReportedWanAddr) || ((IsDoubleNAT(&locallyReportedWanAddr) || igdDisconnected) && hasV6Connectivity)) {
+        snprintf(msgBuf, sizeof(msgBuf), "Your ISP is running a Carrier-Grade NAT that is preventing you from hosting services like Moonlight on the Internet.\n\n"
+            "Ask your ISP for a \"public IPv4 address\" which they may offer for free upon request. For more information and workarounds, click the Help button.");
+        DisplayMessage(msgBuf, "https://github.com/moonlight-stream/moonlight-docs/wiki/Internet-Streaming-Errors#carrier-grade-nat-error");
+    }
+    else if ((IsDoubleNAT(&locallyReportedWanAddr) || igdDisconnected) /* && !hasV6Connectivity */) {
+        snprintf(msgBuf, sizeof(msgBuf), "Your router appears be connected to the Internet through another router. Click the Help button for guidance on fixing this issue.");
+        DisplayMessage(msgBuf, "https://github.com/moonlight-stream/moonlight-docs/wiki/Internet-Streaming-Errors#connected-through-another-router-error");
+    }
+    else {
+        snprintf(msgBuf, sizeof(msgBuf), "Internet GameStream connectivity check failed.\n\n"
+            "First, try restarting your router. If that fails, check that UPnP is enabled in your router settings. For more information and workarounds, click the Help button.\n\n"
+            "The following ports were not forwarded properly:\n%s", portMsgBuf);
+        DisplayMessage(msgBuf, "https://github.com/moonlight-stream/moonlight-docs/wiki/Internet-Streaming-Errors#internet-gamestream-connectivity-check-error");
+    }
+
+    return -1;
 }

mist/mist.exe.manifest

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
+<assembly xmlns="urn:schemas-microsoft-com:asm.v1" xmlns:asmv3="urn:schemas-microsoft-com:asm.v3" manifestVersion="1.0">
+    <compatibility xmlns="urn:schemas-microsoft-com:compatibility.v1">
+        <application>
+            <!-- Windows 10 -->
+            <supportedOS Id="{8e0f7a12-bfb3-4fe8-b9a5-48fd50a15a9a}"/>
+            <!-- Windows 8.1 -->
+            <supportedOS Id="{1f676c76-80e1-4239-95bb-83d0f6d0da78}"/>
+            <!-- Windows 8 -->
+            <supportedOS Id="{4a2f28e3-53b9-4441-ba9c-d69d4a4a6e38}"/>
+            <!-- Windows 7 -->
+            <supportedOS Id="{35138b9a-5d96-4fbd-8e2d-a2440225f93a}"/>
+            <!-- Windows Vista -->
+            <supportedOS Id="{e2011457-1546-43c5-a5fe-008deee3d3f0}"/>
+        </application> 
+    </compatibility>
+</assembly>

mist/mist.h

@@ -0,0 +1,19 @@
+#pragma once
+
+#define _CRT_RAND_S
+#define _CRT_SECURE_NO_WARNINGS
+#include <stdlib.h>
+
+#define WIN32_LEAN_AND_MEAN
+#define _WINSOCK_DEPRECATED_NO_WARNINGS
+#include <Windows.h>
+#include <ws2tcpip.h>
+#include <Iphlpapi.h>
+#include <WinSock2.h>
+
+#include "..\version.h"
+
+#define CONSOLE_OUT stdout
+#define LOG_OUT stderr
+
+bool getExternalAddressPortIP4(unsigned short localPort, PSOCKADDR_IN wanAddr);

mist/mist.rc

@@ -3,6 +3,7 @@
 
 VS_VERSION_INFO VERSIONINFO
 FILEVERSION     VER_VERSION
+PRODUCTVERSION  VER_VERSION
 BEGIN
     BLOCK "StringFileInfo"
     BEGIN
@@ -11,6 +12,8 @@ BEGIN
             VALUE "CompanyName",        VER_COMPANYNAME_STR
             VALUE "FileDescription",    "Moonlight Internet Streaming Tester"
             VALUE "ProductName",        VER_PRODUCTNAME_STR
+            VALUE "FileVersion",        VER_VERSION_STR
+            VALUE "ProductVersion",     VER_VERSION_STR
         END
     END
 

mist/mist.vcxproj

@@ -23,32 +23,32 @@
     <ProjectGuid>{8F78D8D2-A837-489C-BAC5-81494C9CEF7A}</ProjectGuid>
     <Keyword>Win32Proj</Keyword>
     <RootNamespace>mist</RootNamespace>
-    <WindowsTargetPlatformVersion>10.0.17134.0</WindowsTargetPlatformVersion>
+    <WindowsTargetPlatformVersion>10.0</WindowsTargetPlatformVersion>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
-    <PlatformToolset>v141</PlatformToolset>
+    <PlatformToolset>v143</PlatformToolset>
     <CharacterSet>NotSet</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
-    <PlatformToolset>v141</PlatformToolset>
+    <PlatformToolset>v143</PlatformToolset>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>NotSet</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
-    <PlatformToolset>v141</PlatformToolset>
+    <PlatformToolset>v143</PlatformToolset>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
-    <PlatformToolset>v141</PlatformToolset>
+    <PlatformToolset>v143</PlatformToolset>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
@@ -93,13 +93,22 @@
       <PrecompiledHeaderFile>
       </PrecompiledHeaderFile>
       <AdditionalIncludeDirectories>..\libs\include;..\libs\include\miniupnpc;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
+      <RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
+      <ControlFlowGuard>Guard</ControlFlowGuard>
+      <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
       <GenerateDebugInformation>true</GenerateDebugInformation>
       <AdditionalLibraryDirectories>..\libs\x86\Debug;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+      <CETCompat>true</CETCompat>
     </Link>
+    <Manifest>
+      <AdditionalManifestFiles>mist.exe.manifest</AdditionalManifestFiles>
+    </Manifest>
+    <PostBuildEvent>
+      <Command>copy /Y  "$(SolutionDir)libs\x86\Debug\*" "$(TargetDir)"</Command>
+    </PostBuildEvent>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
     <ClCompile>
@@ -110,11 +119,20 @@
       <PreprocessorDefinitions>_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <ConformanceMode>true</ConformanceMode>
       <PrecompiledHeaderFile>pch.h</PrecompiledHeaderFile>
+      <ControlFlowGuard>Guard</ControlFlowGuard>
+      <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
       <GenerateDebugInformation>true</GenerateDebugInformation>
+      <CETCompat>true</CETCompat>
     </Link>
+    <Manifest>
+      <AdditionalManifestFiles>mist.exe.manifest</AdditionalManifestFiles>
+    </Manifest>
+    <PostBuildEvent>
+      <Command>copy /Y  "$(SolutionDir)libs\x86\Debug\*" "$(TargetDir)"</Command>
+    </PostBuildEvent>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
     <ClCompile>
@@ -129,7 +147,8 @@
       <PrecompiledHeaderFile>
       </PrecompiledHeaderFile>
       <AdditionalIncludeDirectories>..\libs\include;..\libs\include\miniupnpc;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
+      <RuntimeLibrary>MultiThreadedDLL</RuntimeLibrary>
+      <ControlFlowGuard>Guard</ControlFlowGuard>
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
@@ -137,7 +156,14 @@
       <OptimizeReferences>true</OptimizeReferences>
       <GenerateDebugInformation>true</GenerateDebugInformation>
       <AdditionalLibraryDirectories>..\libs\x86\Release;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+      <CETCompat>true</CETCompat>
     </Link>
+    <Manifest>
+      <AdditionalManifestFiles>mist.exe.manifest</AdditionalManifestFiles>
+    </Manifest>
+    <PostBuildEvent>
+      <Command>copy /Y  "$(SolutionDir)libs\x86\Release\*" "$(TargetDir)"</Command>
+    </PostBuildEvent>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
     <ClCompile>
@@ -150,13 +176,21 @@
       <PreprocessorDefinitions>NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <ConformanceMode>true</ConformanceMode>
       <PrecompiledHeaderFile>pch.h</PrecompiledHeaderFile>
+      <ControlFlowGuard>Guard</ControlFlowGuard>
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
       <EnableCOMDATFolding>true</EnableCOMDATFolding>
       <OptimizeReferences>true</OptimizeReferences>
       <GenerateDebugInformation>true</GenerateDebugInformation>
+      <CETCompat>true</CETCompat>
     </Link>
+    <Manifest>
+      <AdditionalManifestFiles>mist.exe.manifest</AdditionalManifestFiles>
+    </Manifest>
+    <PostBuildEvent>
+      <Command>copy /Y  "$(SolutionDir)libs\x86\Release\*" "$(TargetDir)"</Command>
+    </PostBuildEvent>
   </ItemDefinitionGroup>
   <ItemGroup>
     <ClCompile Include="mist.cpp" />
@@ -167,6 +201,10 @@
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\version.h" />
+    <ClInclude Include="mist.h" />
+  </ItemGroup>
+  <ItemGroup>
+    <Manifest Include="mist.exe.manifest" />
   </ItemGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">

mist/mist.vcxproj.filters

@@ -26,10 +26,18 @@
     <ClInclude Include="..\version.h">
       <Filter>Header Files</Filter>
     </ClInclude>
+    <ClInclude Include="mist.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <ResourceCompile Include="mist.rc">
       <Filter>Source Files</Filter>
     </ResourceCompile>
   </ItemGroup>
+  <ItemGroup>
+    <Manifest Include="mist.exe.manifest">
+      <Filter>Resource Files</Filter>
+    </Manifest>
+  </ItemGroup>
 </Project>

mist/stun.cpp

@@ -1,17 +1,10 @@
-#define _CRT_RAND_S
-#define _CRT_SECURE_NO_WARNINGS
-#include <stdlib.h>
-
-#define WIN32_LEAN_AND_MEAN
-#define _WINSOCK_DEPRECATED_NO_WARNINGS
-#include <Windows.h>
-#include <WinSock2.h>
+#include "mist.h"
 
 #include <stdio.h>
 
 #define STUN_PORT 3478
 
-#define STUN_RECV_TIMEOUT_SEC 3
+#define STUN_RECV_TIMEOUT_SEC 5
 
 #define STUN_MESSAGE_BINDING_REQUEST 0x0001
 #define STUN_MESSAGE_BINDING_SUCCESS 0x0101
@@ -45,41 +38,50 @@ typedef struct _STUN_MESSAGE {
 
 #pragma pack(pop)
 
-bool getExternalAddressPortIP4(int proto, unsigned short localPort, PSOCKADDR_IN wanAddr)
+bool getExternalAddressPortIP4(unsigned short localPort, PSOCKADDR_IN wanAddr)
 {
     SOCKET sock;
     STUN_MESSAGE reqMsg;
     int i;
     int bytesRead;
-    int tries;
-    int timeout;
+    int err;
+    bool ret;
     PSTUN_ATTRIBUTE_HEADER attribute;
     PSTUN_MAPPED_IPV4_ADDRESS_ATTRIBUTE ipv4Attrib;
-    struct hostent *host;
+    struct addrinfo* result;
+    struct addrinfo hints;
+    struct sockaddr_in bindAddr;
     union {
         STUN_MESSAGE hdr;
         char buf[1024];
     } resp;
 
-    host = gethostbyname("stun.stunprotocol.org");
-    if (host == nullptr) {
-        printf("gethostbyname() failed: %d\n", WSAGetLastError());
+    sock = INVALID_SOCKET;
+    ret = false;
+
+    memset(&hints, 0, sizeof(hints));
+    hints.ai_family = AF_INET;
+    hints.ai_flags = AI_ADDRCONFIG;
+    hints.ai_socktype = SOCK_DGRAM;
+    hints.ai_protocol = IPPROTO_UDP;
+    err = getaddrinfo("stun.moonlight-stream.org", "3478", &hints, &result);
+    if (err != 0 || result == NULL) {
+        fprintf(LOG_OUT, "getaddrinfo() failed: %d\n", err);
         return false;
     }
 
-    sock = socket(AF_INET, proto == IPPROTO_TCP ? SOCK_STREAM : SOCK_DGRAM, proto);
+    sock = socket(hints.ai_family, hints.ai_socktype, hints.ai_protocol);
     if (sock == INVALID_SOCKET) {
-        printf("socket() failed: %d\n", WSAGetLastError());
-        return false;
+        fprintf(LOG_OUT, "socket() failed: %d\n", WSAGetLastError());
+        goto Exit;
     }
 
-    struct sockaddr_in bindAddr = {};
-    bindAddr.sin_family = AF_INET;
+    bindAddr = {};
+    bindAddr.sin_family = hints.ai_family;
     bindAddr.sin_port = htons(localPort);
     if (bind(sock, (struct sockaddr*)&bindAddr, sizeof(bindAddr)) == SOCKET_ERROR) {
-        printf("bind() failed: %d\n", WSAGetLastError());
-        closesocket(sock);
-        return false;
+        fprintf(LOG_OUT, "bind() failed: %d\n", WSAGetLastError());
+        goto Exit;
     }
 
     reqMsg.messageType = htons(STUN_MESSAGE_BINDING_REQUEST);
@@ -89,97 +91,80 @@ bool getExternalAddressPortIP4(int proto, unsigned short localPort, PSOCKADDR_IN
         reqMsg.transactionId[i] = rand();
     }
 
-    SOCKADDR_IN stunAddr = {};
-    stunAddr.sin_family = AF_INET;
-    stunAddr.sin_port = htons(STUN_PORT);
-    stunAddr.sin_addr = *(struct in_addr*)host->h_addr;
-
-    // We'll connect() even for UDP so we can use send()/recv() and share more code
-    if (connect(sock, (struct sockaddr*)&stunAddr, sizeof(stunAddr)) == SOCKET_ERROR) {
-        printf("connect() failed: %d\n", WSAGetLastError());
-        closesocket(sock);
-        return false;
-    }
-
-    // For UDP, we'll do 3 iterations of 1 second each. For TCP,
-    // we'll do one iteration with a 3 second wait.
-    if (proto == IPPROTO_TCP) {
-        tries = 1;
-        timeout = STUN_RECV_TIMEOUT_SEC;
-    }
-    else {
-        tries = STUN_RECV_TIMEOUT_SEC;
-        timeout = 1;
-    }
-
-    bytesRead = SOCKET_ERROR;
-    for (i = 0; i < tries; i++) {
-        // Retransmit the request every second until the timeout elapses
-        if (send(sock, (char *)&reqMsg, sizeof(reqMsg), 0) == SOCKET_ERROR) {
-            printf("send() failed: %d\n", WSAGetLastError());
-            closesocket(sock);
-            return false;
+    bytesRead = 0;
+    for (i = 0; i < STUN_RECV_TIMEOUT_SEC; i++) {
+        // Retransmit the request every second to all resolved IP addresses until the timeout elapses
+        for (struct addrinfo* current = result; current != NULL; current = current->ai_next) {
+            if (sendto(sock, (char*)&reqMsg, sizeof(reqMsg), 0, current->ai_addr, current->ai_addrlen) == SOCKET_ERROR) {
+                fprintf(LOG_OUT, "sendto() failed: %d\n", WSAGetLastError());
+            }
         }
 
-        fd_set fds;
-        FD_ZERO(&fds);
-        FD_SET(sock, &fds);
+        for (;;) {
+            fd_set fds;
+            FD_ZERO(&fds);
+            FD_SET(sock, &fds);
 
-        struct timeval tv;
-        tv.tv_sec = timeout;
-        tv.tv_usec = 0;
+            struct timeval tv;
+            tv.tv_sec = 1;
+            tv.tv_usec = 0;
 
-        int selectRes = select(0, &fds, nullptr, nullptr, &tv);
-        if (selectRes == 0) {
-            // Timeout - continue looping
-            continue;
+            int selectRes = select(0, &fds, nullptr, nullptr, &tv);
+            if (selectRes == 0) {
+                // Timeout - break to the enclosing loop
+                break;
+            }
+            else if (selectRes == SOCKET_ERROR) {
+                fprintf(LOG_OUT, "select() failed: %d\n", WSAGetLastError());
+                goto Exit;
+            }
+
+            // recvfrom() will return WSAECONNRESET if the socket has received an ICMP Port Unreachable
+            // message from one of the IP addresses we've attempted communication with. The socket is still
+            // operable (and may even contain queued messages to receive). We should ignore that error and
+            // continue reading, otherwise exit the loop.
+            bytesRead = recvfrom(sock, resp.buf, sizeof(resp.buf), 0, NULL, NULL);
+            if (bytesRead != SOCKET_ERROR || WSAGetLastError() != WSAECONNRESET) {
+                goto RecvDone;
+            }
         }
-        else if (selectRes == SOCKET_ERROR) {
-            printf("select() failed: %d\n", WSAGetLastError());
-            closesocket(sock);
-            return false;
-        }
-
-        // Error handling is below
-        bytesRead = recv(sock, resp.buf, sizeof(resp.buf), 0);
-        break;
     }
 
-    closesocket(sock);
-
+RecvDone:
     if (bytesRead == 0) {
-        printf("No response from STUN server\n");
-        return false;
+        fprintf(LOG_OUT, "No response from STUN server\n");
+        goto Exit;
     }
     else if (bytesRead == SOCKET_ERROR) {
-        printf("Failed to read STUN binding response: %d\n", WSAGetLastError());
-        return false;
+        fprintf(LOG_OUT, "Failed to read STUN binding response: %d\n", WSAGetLastError());
+        goto Exit;
     }
     else if (bytesRead < sizeof(resp.hdr)) {
-        printf("STUN message truncated: %d\n", bytesRead);
-        return false;
+        fprintf(LOG_OUT, "STUN message truncated: %d\n", bytesRead);
+        goto Exit;
     }
     else if (htonl(resp.hdr.magicCookie) != STUN_MESSAGE_COOKIE) {
-        printf("Bad STUN cookie value: %x\n", htonl(resp.hdr.magicCookie));
-        return false;
+        fprintf(LOG_OUT, "Bad STUN cookie value: %x\n", htonl(resp.hdr.magicCookie));
+        goto Exit;
     }
     else if (memcmp(reqMsg.transactionId, resp.hdr.transactionId, sizeof(reqMsg.transactionId))) {
-        printf("STUN transaction ID mismatch\n");
-        return false;
+        fprintf(LOG_OUT, "STUN transaction ID mismatch\n");
+        goto Exit;
     }
     else if (htons(resp.hdr.messageType) != STUN_MESSAGE_BINDING_SUCCESS) {
-        printf("STUN message type mismatch: %x\n", htons(resp.hdr.messageType));
-        return false;
+        fprintf(LOG_OUT, "STUN message type mismatch: %x\n", htons(resp.hdr.messageType));
+        goto Exit;
     }
 
     attribute = (PSTUN_ATTRIBUTE_HEADER)(&resp.hdr + 1);
     bytesRead -= sizeof(resp.hdr);
     while (bytesRead > sizeof(*attribute)) {
         if (bytesRead < sizeof(*attribute) + htons(attribute->length)) {
-            printf("STUN attribute out of bounds: %d\n", htons(attribute->length));
-            return false;
+            fprintf(LOG_OUT, "STUN attribute out of bounds: %d\n", htons(attribute->length));
+            goto Exit;
         }
-        else if (htons(attribute->type) != STUN_ATTRIBUTE_XOR_MAPPED_ADDRESS) {
+        // Mask off the comprehension bit
+        else if ((htons(attribute->type) & 0x7FFF) != STUN_ATTRIBUTE_XOR_MAPPED_ADDRESS) {
             // Continue searching if this wasn't our address
             bytesRead -= sizeof(*attribute) + htons(attribute->length);
             attribute = (PSTUN_ATTRIBUTE_HEADER)(((char*)attribute) + sizeof(*attribute) + htons(attribute->length));
@@ -188,12 +173,12 @@ bool getExternalAddressPortIP4(int proto, unsigned short localPort, PSOCKADDR_IN
 
         ipv4Attrib = (PSTUN_MAPPED_IPV4_ADDRESS_ATTRIBUTE)attribute;
         if (htons(ipv4Attrib->hdr.length) != 8) {
-            printf("STUN address length mismatch: %d\n", htons(ipv4Attrib->hdr.length));
-            return false;
+            fprintf(LOG_OUT, "STUN address length mismatch: %d\n", htons(ipv4Attrib->hdr.length));
+            goto Exit;
         }
         else if (ipv4Attrib->addressFamily != 1) {
-            printf("STUN address family mismatch: %x\n", ipv4Attrib->addressFamily);
-            return false;
+            fprintf(LOG_OUT, "STUN address family mismatch: %x\n", ipv4Attrib->addressFamily);
+            goto Exit;
         }
 
         *wanAddr = {};
@@ -203,9 +188,20 @@ bool getExternalAddressPortIP4(int proto, unsigned short localPort, PSOCKADDR_IN
         wanAddr->sin_port = ipv4Attrib->port ^ (short)resp.hdr.magicCookie;
         wanAddr->sin_addr.S_un.S_addr = ipv4Attrib->address ^ resp.hdr.magicCookie;
 
-        return true;
+        ret = true;
+        goto Exit;
     }
 
-    printf("No XOR mapped address found in STUN response!\n");
-    return false;
+    fprintf(LOG_OUT, "No XOR mapped address found in STUN response!\n");
+
+Exit:
+    if (sock != INVALID_SOCKET) {
+        closesocket(sock);
+    }
+
+    if (result != NULL) {
+        freeaddrinfo(result);
+    }
+
+    return ret;
 }

version.h

@@ -1,7 +1,7 @@
 #pragma once
 
-#define VER_VERSION                 2,0,0,0
-#define VER_VERSION_STR             "2.0.0.0"
+#define VER_VERSION                 5,5,4,0
+#define VER_VERSION_STR             "5.5.4.0"
 
 #define VER_COMPANYNAME_STR         "Moonlight Game Streaming Project"
-#define VER_PRODUCTNAME_STR         "Moonlight Internet Streaming Helper"
+#define VER_PRODUCTNAME_STR         "Moonlight Internet Hosting Tool"