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Merge branch 'master' of https://github.com/wangyu-/udp2raw-tunnel

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README.md
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# Udp2raw-tunnel # Udp2raw-tunnel
![image0](images/image0.PNG) ![image0](images/image0.PNG)
An Encrpyted,Anti-Replay,Multiplexed UDP Tunnel which can help you Bypass UDP Block or QoS by tunneling UDP traffic through Fake-TCP or ICMP by using raw socket.It aslo acts as a Connection Stablizer. A UDP Tunnel which tunnels UDP via FakeTCP/UDP/ICMP Traffic by using Raw Socket,helps you Bypass UDP FireWalls(or Unstable UDP Environment).Its Encrpyted,Anti-Replay and Multiplexed.It aslo acts as a Connection Stablizer.
[简体中文](/doc/README.zh-cn.md) [简体中文](/doc/README.zh-cn.md)
# Features # Features
@ -11,11 +11,11 @@ Fake-tcp/icmp headers help you bypass UDP blocking, UDP QOS or improper UDP NAT
### Simulate TCP Handshake ### Simulate TCP Handshake
Simulates the 3-way handshake, along with seq and ack_seq. TCP options MSS, sackOk, TS, TS_ack, wscale are also simulated. Real-time delivery guaranteed, no TCP over TCP problem when using OpenVPN. Simulates the 3-way handshake, along with seq and ack_seq. TCP options MSS, sackOk, TS, TS_ack, wscale are also simulated. Real-time delivery guaranteed, no TCP over TCP problem when using OpenVPN.
### Encrpytion, Anti-Replay, Anti-MITM ### Encrpytion, Anti-Replay, No MITM
* Encrypt your traffic with AES-128-CBC. * Encrypt your traffic with AES-128-CBC.
* Protect data integrity by MD5 or CRC32. * Protect data integrity by MD5 or CRC32.
* Defense replay attack with an anti-replay window, smiliar to IPSec and OpenVPN. * Defense replay attack with an anti-replay window, smiliar to IPSec and OpenVPN.
* Authenticate mutually, no more MITM attacks. * Authenticate mutually, no MITM attacks.
### Failure Dectection & Stablization (Connection Recovery) ### Failure Dectection & Stablization (Connection Recovery)
Conection failures are detected by heartbeats. If timed-out,client will automatically change port number and reconnect. If reconnection is successful, the previous connection will be recovered, and all existing UDP conversations will stay vaild. Conection failures are detected by heartbeats. If timed-out,client will automatically change port number and reconnect. If reconnection is successful, the previous connection will be recovered, and all existing UDP conversations will stay vaild.
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Transparently tunnel your IP traffic through ICMP echo and reply packets. Transparently tunnel your IP traffic through ICMP echo and reply packets.
https://github.com/DhavalKapil/icmptunnel https://github.com/DhavalKapil/icmptunnel
### Tcp Minion
Tcp Minion is a project which modifid the code of tcp stack in kernel,and implemented real-time out-order udp packet delivery through this modified tcp stack.I failed to find the implementation,but there are some papers avaliable:
https://arxiv.org/abs/1103.0463
http://korz.cs.yale.edu/2009/tng/papers/pfldnet10.pdf
https://pdfs.semanticscholar.org/9e6f/e2306f4385b4eb5416d1fcab16e9361d6ba3.pdf

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doc/README.zh-cn.md
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Udp2raw-tunnel Udp2raw-tunnel
![image2](/images/image2.PNG) ![image2](/images/image2.PNG)
加密、防重放攻击的、信道复用的udp tunnel，利用raw socket中转udp流量.同时有心跳保活，且在断线重连后保持上层连接不掉线的功能。 UDP tunnel，通过raw socket给UDP包加上TCP或ICMP header，进而绕过UDP屏蔽或QoS，或在UDP不稳定的环境下提升稳定性。支持心跳保活、自动重连，重连后会恢复上次连接，在底层掉线的情况下可以保持上层不掉线。同时有加密、防重放攻击、信道复用的功能。
**欢迎任何形式的转载**
[English](/README.md) [English](/README.md)
@ -49,7 +51,7 @@ epoll纯异步，高并发，除了回收过期连接外，所有操作的时间
# 简明操作说明 # 简明操作说明
### 环境要求 ### 环境要求
Linux主机，有root权限。主机上最好安装了iptables命令(apt/yum很容易安装)。在windows和mac上可以开虚拟机（桥接模式和<del>NAT模式</del>经测试都可用）。 Linux主机，有root权限。主机上最好安装了iptables命令(apt/yum很容易安装)。在windows和mac上可以开虚拟机（udp2raw跑在linux里，其他应用照常跑在windows上，桥接模式测试可用）。
### 安装 ### 安装
下载编译好的二进制文件，解压到任意目录。 下载编译好的二进制文件，解压到任意目录。