1.更新对称NAT的打洞方式；2.支持windows服务；3.更新协议内容

switch/src/handle/tun_handler.rs

@@ -10,12 +10,12 @@ use packet::icmp::Kind;
 use packet::ip::ipv4;
 use packet::ip::ipv4::packet::IpV4Packet;
 
-use crate::ApplicationStatus;
 use crate::error::*;
 use crate::handle::{CurrentDeviceInfo, DIRECT_ROUTE_TABLE};
-use crate::protocol::{NetPacket, Protocol, Version};
 use crate::protocol::turn_packet::TurnPacket;
+use crate::protocol::{NetPacket, Protocol, Version};
 use crate::tun_device::TunReader;
+use crate::ApplicationStatus;
 
 /// 是否在一个网段
 fn check_dest(dest: Ipv4Addr, cur_info: &CurrentDeviceInfo) -> bool {