一直在用redsocks做流量转发，用着还是挺不错的，但是偶尔还是会hang住，导致网络卡住。老早就有升级的想法，一直没有动手。
什么是redsocks？
This tool allows you to redirect any TCP connection to SOCKS or HTTPS proxy using your firewall, so redirection may be system-wide or network-wide.
When is redsocks useful?
- you want to route part of TCP traffic via OpenSSH
DynamicForwardSocks5 port using firewall policies. That was original redsocks development goal; - you use DVB ISP and this ISP provides internet connectivity with some special daemon that may be also called “Internet accelerator” and the accelerator acts as a proxy and has no “transparent proxy” feature and you need it. Globax was an example of alike accelerator, but Globax 5 has transparent proxy feature. That was the second redsocks` development goal;
- you have to pass traffic through proxy due to corporate network limitation. That was never a goal for redsocks, but users have reported success with some proxy configurations.
以上是官方介绍。功能确实很强大，毕竟是俄国大佬的作品，继承了俄国产品强大而又粗糙的刻板印象。翻了他的repo，发现最后更新是2019年，而且还是改typo，其他的issue没有回复，大概大佬也不打算维护了吧。找了好久替代，发现了它的一个fork，似乎改了不少东西，就拖下来试试看吧。运行了一晚上，稳定性似乎还不错。
github地址 https://github.com/semigodking/redsocks
该repo依赖openssl和libevent2，libevent2在树莓派的repo中没有了，所以只能现编译。
现在把安装过程记录一下（仅限Raspberry Pi）：
#安装openssl开发包
sudo apt install libssl-dev
#获取代码
wget https://github.com/libevent/libevent/releases/download/release-2.1.12-stable/libevent-2.1.12-stable.tar.gz
tar xvfz libevent-2.1.12-stable.tar.gz
cd libevent-2.1.12-stable
编译、安装
make
sudo make install
#克隆redsocks2的代码
git clone https://github.com/semigodking/redsocks
cd redsocks
make DISABLE_SHADOWSOCKS=1 ENABLE_STATIC=1
编译完，修改之前redsocks的配置文件、替换redsocks文件，重启服务即可。
目前暂时稳定。