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<div id="app" data-server-rendered="true"><div class="theme-container sidebar-open have-rightmenu"><header class="navbar blur"><div title="目录" class="sidebar-button"><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" role="img" viewBox="0 0 448 512" class="icon"><path fill="currentColor" d="M436 124H12c-6.627 0-12-5.373-12-12V80c0-6.627 5.373-12 12-12h424c6.627 0 12 5.373 12 12v32c0 6.627-5.373 12-12 12zm0 160H12c-6.627 0-12-5.373-12-12v-32c0-6.627 5.373-12 12-12h424c6.627 0 12 5.373 12 12v32c0 6.627-5.373 12-12 12zm0 160H12c-6.627 0-12-5.373-12-12v-32c0-6.627 5.373-12 12-12h424c6.627 0 12 5.373 12 12v32c0 6.627-5.373 12-12 12z"></path></svg></div> <a href="/neutrino-proxy/" class="home-link router-link-active"><img src="/neutrino-proxy/img/logo.png" alt="中微子代理" class="logo"> <span class="site-name can-hide">中微子代理</span></a> <div class="links"><div class="search-box"><input aria-label="Search" autocomplete="off" spellcheck="false" value=""> <!----></div> <nav class="nav-links can-hide"><div class="nav-item"><a href="/neutrino-proxy/" class="nav-link">首页</a></div><div class="nav-item"><div class="dropdown-wrapper"><button type="button" aria-label="文档" class="dropdown-title"><a href="/neutrino-proxy/pages/793dcb/" class="link-title">文档</a> <span class="title" style="display:none;">文档</span> <span class="arrow right"></span></button> <ul class="nav-dropdown" style="display:none;"><li class="dropdown-item"><!----> <a href="/neutrino-proxy/pages/793dcb/" class="nav-link">快速上手</a></li><li class="dropdown-item"><!----> <a href="/neutrino-proxy/pages/793dcc/" class="nav-link">后台操作指南</a></li></ul></div></div><div class="nav-item"><a href="/neutrino-proxy/pages/5d571c/" class="nav-link">案例</a></div><div class="nav-item"><a href="/neutrino-proxy/pages/1ab20b/" class="nav-link">支持</a></div><div class="nav-item"><a href="/neutrino-proxy/pages/ff3519/" class="nav-link">更新记录</a></div><div class="nav-item"><a href="https://gitcode.com/dromara/neutrino-proxy" target="_blank" rel="noopener noreferrer" class="nav-link external">
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GitCode
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Github
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GitCode
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Gitee
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<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></div> <a href="https://github.com/dromara/neutrino-proxy" target="_blank" rel="noopener noreferrer" class="repo-link">
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Github
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<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></nav> <ul class="sidebar-links"><li><a href="/neutrino-proxy/pages/1ab20b/" class="sidebar-link">个人赞赏</a></li><li><section class="sidebar-group depth-0"><p class="sidebar-heading open"><span>贡献指南</span> <!----></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/neutrino-proxy/pages/a3f096/" class="sidebar-link">如何贡献</a></li><li><a href="/neutrino-proxy/pages/2f674a/" class="sidebar-link">项目结构</a></li><li><a href="/neutrino-proxy/pages/dd027d/" aria-current="page" class="active sidebar-link">实现原理</a><ul class="sidebar-sub-headers"><li class="sidebar-sub-header level2"><a href="/neutrino-proxy/pages/dd027d/#指令通道-cmdchannel" class="sidebar-link">指令通道(CmdChannel)</a></li><li class="sidebar-sub-header level2"><a href="/neutrino-proxy/pages/dd027d/#用户访问通道-visitorchannel" class="sidebar-link">用户访问通道(VisitorChannel)</a></li><li class="sidebar-sub-header level2"><a href="/neutrino-proxy/pages/dd027d/#被代理服务的实际通道-realserverchannel" class="sidebar-link">被代理服务的实际通道(RealServerChannel)</a></li><li class="sidebar-sub-header level2"><a href="/neutrino-proxy/pages/dd027d/#代理数据传输的通道-proxychannel" class="sidebar-link">代理数据传输的通道(ProxyChannel)</a></li><li class="sidebar-sub-header level2"><a href="/neutrino-proxy/pages/dd027d/#_1、服务连接阶段" class="sidebar-link">1、服务连接阶段</a></li><li class="sidebar-sub-header level2"><a href="/neutrino-proxy/pages/dd027d/#_2、用户连接阶段" class="sidebar-link">2、用户连接阶段</a></li><li class="sidebar-sub-header level2"><a href="/neutrino-proxy/pages/dd027d/#_3、实际被代理服务连接阶段" class="sidebar-link">3、实际被代理服务连接阶段</a></li><li class="sidebar-sub-header level2"><a href="/neutrino-proxy/pages/dd027d/#_4、代理通道连接阶段" class="sidebar-link">4、代理通道连接阶段</a></li><li class="sidebar-sub-header level2"><a href="/neutrino-proxy/pages/dd027d/#_5、数据传输阶段" class="sidebar-link">5、数据传输阶段</a></li></ul></li></ul></section></li><li><section class="sidebar-group depth-0"><p class="sidebar-heading"><span>赞赏公示</span> <!----></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/neutrino-proxy/pages/acdf0a/" class="sidebar-link">2024年</a></li><li><a href="/neutrino-proxy/pages/cded59/" class="sidebar-link">2023年</a></li></ul></section></li></ul> </aside> <div><main class="page"><div class="theme-vdoing-wrapper "><div class="placeholder"></div> <!----> <div class="content-wrapper"><div class="right-menu-wrapper"><div class="right-menu-margin"><div class="right-menu-title">目录</div> <div class="right-menu-content"></div></div></div> <h1><img src="data:image/png;base64,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">实现原理<!----></h1> <div class="page-slot page-slot-top">
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<style>
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</div> <div class="theme-vdoing-content content__default"><h1 id="代理实现中涉及的几类channel"><a href="#代理实现中涉及的几类channel" class="header-anchor">#</a> 代理实现中涉及的几类Channel</h1> <h2 id="指令通道-cmdchannel"><a href="#指令通道-cmdchannel" class="header-anchor">#</a> 指令通道(CmdChannel)</h2> <ul><li>该channel负责维护客户端与服务端之间的指令通讯，由客户端启动后向服务端发起连接请求，服务端验证license成功后连接建立。</li> <li>服务端维护第一个CmdChannel的映射表，key为licenseId。服务端可以根据licenseId，向指定的客户端指令通道发布指令。</li> <li>该通道建立完成后，服务端会将该license授权的外网映射端口打开，等待用户访问。正常情况下，只要客户端不下线，该通道一直可用。</li> <li>然后服务端维护第二个CmdChannel的映射表，key为服务端外网端口。服务端可以根据指定的外网端口，向指定的客户端指令通道发布指令。</li></ul> <h2 id="用户访问通道-visitorchannel"><a href="#用户访问通道-visitorchannel" class="header-anchor">#</a> 用户访问通道(VisitorChannel)</h2> <ul><li>该channel负责维护访问者与服务端端口之间的通讯，由访问者向服务端映射的外网端口发起请求开始建立，具体断开时机由实际的被代理的
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协议决定。</li> <li>如HTTP/1.0下，用户向该端口发起请求，响应结束后，该通道随之关闭，下一次发起请求后，重新建立新的连接。</li> <li>该连接建立后，服务端会向该外网端口映射的指令通道发送<code>Connect</code>指令,传输该外网端口需要代理的内网信息，
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如：<code>127.0.0.1:3306</code>。</li></ul> <h2 id="被代理服务的实际通道-realserverchannel"><a href="#被代理服务的实际通道-realserverchannel" class="header-anchor">#</a> 被代理服务的实际通道(RealServerChannel)</h2> <ul><li>该channel负责维护客户端与实际被代理服务之间的通讯，当客户端接收到服务端的<code>Connect</code>指令后，客户端便会建立该通道。</li></ul> <h2 id="代理数据传输的通道-proxychannel"><a href="#代理数据传输的通道-proxychannel" class="header-anchor">#</a> 代理数据传输的通道(ProxyChannel)</h2> <ul><li>该channel负责完成内网被代理服务与代理服务端之间的数据转发任务。</li> <li>每个客户端维护一个<code>ProxyChannel</code>的缓存队列，需要时从该队列中取，当取不到时，直接新建一个<code>ProxyChannel</code>返回。
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当一个<code>ProxyChannel</code>实例用完后，需要归还到缓存队列中(<code>ProxyChannel</code>收到<code>DisConnect</code>指令时)。</li> <li>当<code>RealServerChannel</code>建立完成后，就会获取相关联的<code>ProxyChannel</code>,并与其绑定。设置<code>RealServerChannel</code>为
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可读状态。然后通过<code>ProxyChannel</code>向服务端发送<code>Connect</code>指令。</li></ul> <h1 id="代理实现流程"><a href="#代理实现流程" class="header-anchor">#</a> 代理实现流程</h1> <h2 id="_1、服务连接阶段"><a href="#_1、服务连接阶段" class="header-anchor">#</a> 1、服务连接阶段</h2> <ul><li>1.1、客户端根据是否需要使用SSL，选择对应的服务端端口发起连接，建立<code>CmdChannel</code>。</li> <li>1.2、客户端根据用户输入或配置文件获取<code>license</code>,并携带<code>license</code>通过<code>CmdChannel</code>向服务端发送<code>Auth</code>指令。</li> <li>1.3、服务端通过<code>CmdChannel</code>接收到来自客户端的<code>Auth</code>指令。若验证<code>license</code>有效，则建立<code>licenseId</code>与<code>CmdChannel</code>的映射缓存、
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外网端口与<code>CmdChannel</code>的映射缓存。并启动服务端代理端口，等待用户连接。</li></ul> <h2 id="_2、用户连接阶段"><a href="#_2、用户连接阶段" class="header-anchor">#</a> 2、用户连接阶段</h2> <ul><li>2.1、用户向服务端代理的外网端口发起请求，服务端建立<code>VisitorChannel</code>。</li> <li>2.2、根据外网端口查找<code>CmdChannel</code>，若不存在有效的<code>CmdChannel</code>，则关闭该<code>VisitorChannel</code>。否则，
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||
设置<code>VisitorChannel</code>为不可读，并携带内网映射信息(如：<code>127.0.0.1:3306</code>)通过<code>CmdChannel</code>向客户端发送<code>Connect</code>指令。</li></ul> <h2 id="_3、实际被代理服务连接阶段"><a href="#_3、实际被代理服务连接阶段" class="header-anchor">#</a> 3、实际被代理服务连接阶段</h2> <ul><li>3.1、客户端通过<code>CmdChannel</code>接收到服务端的<code>Connect</code>指令。拿到需要代理的内网IP、端口号，向实际被
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||
代理服务发起连接请求，若连接失败，则通过<code>CmdChannel</code>向服务端发送<code>DisConnect</code>指令。建立<code>RealServerChannel</code>成功，设置<code>RealServerChannel</code>为不可读
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||
状态，并进入4.1阶段</li></ul> <h2 id="_4、代理通道连接阶段"><a href="#_4、代理通道连接阶段" class="header-anchor">#</a> 4、代理通道连接阶段</h2> <ul><li>4.1、客户端通过<code>ProxyChannelQueue</code>获取或新建一个<code>ProxyChannel</code>，并将<code>RealServerChannel</code>与<code>ProxyChannel</code>进行绑定。</li> <li>4.2、客户端通过<code>ProxyChannel</code>向服务端发送<code>Connect</code>指令。</li> <li>4.3、服务端通过<code>ProxyChannel</code>通道收到来自客户端的<code>Connect</code>指令后，将<code>ProxyChannel</code>与对应的<code>VisitorChannel</code>进行绑定，并
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||
设置<code>VisitorChannel</code>为可读状态。</li></ul> <h2 id="_5、数据传输阶段"><a href="#_5、数据传输阶段" class="header-anchor">#</a> 5、数据传输阶段</h2> <ul><li>5.1、服务端通过<code>VisitorChannel</code>收到来自用户的请求数据，然后找到<code>VisitorChannel</code>绑定的<code>ProxyChannel</code>，
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||
通过<code>ProxyChannel</code>发送<code>Transfer</code>指令，并携带用户请求数据。</li> <li>5.2、客户端通过<code>ProxyChannel</code>收到来自服务端的<code>Transfer</code>指令，取出用户请求数据。找到<code>ProxyChannel</code>绑定的<code>RealServerChannel</code>,
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||
通过<code>RealServerChannel</code>向被代理服务写入用户请求数据。</li> <li>5.3、客户端通过<code>RealServerChannel</code>收到被代理服务响应的数据，找到<code>RealServerChannel</code>绑定的<code>ProxyChannel</code>，
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||
通过<code>ProxyChannel</code>向服务端发送<code>Transfer</code>指令，并携带响应数据。</li> <li>5.4、服务端通过<code>ProxyChannel</code>收到来自客户端的<code>Transfer</code>指令，找到<code>ProxyChannel</code>绑定的<code>VisitorChannel</code>，
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