实现NIO对SOCKS5代理的支持
License: Apache License 2.0
为了在windows环境下使用kt-connect连接k8s内部网络，需要为NIO实现对SOCKS5代理的支持，否则一些客户端组件如果使用的是NIO,就无法连接。
具体实现参考了mocksocks项目以及JDK8中的java.net.SocksSocketImpl的实现。
配置项目启动参数，javaagent与nioSocksProxyJar的参数值为lib/nio-socks-proxy-1.0.0.jar的绝对路径。nioSocksProxyHost与nioSocksProxyPort配置socks服务器的地址。
-DnioSocksProxyHost=127.0.0.1
-DnioSocksProxyPort=2223
-javaagent:xxx\nio-socks-proxy.jar
-DnioSocksProxyJar=xxx\nio-socks-proxy.jar
目前我是在windows环境使用idea，用socks5的方式联调。启动项目后可以访问pod提供的服务，但是使用dubbo进行微服务调用失败。然后看到您的项目，猜测需要给dubbo底层nio进行代理才能正常访问服务提供者。但是按照您的方法添加lib之后，仍然无法代理，只多出来来一句Can't set proxy for /11.244.203.152:20880，请问您当时代理成功的时候，本地网络是怎么配置的呢。
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