编译安装nginx时，需要在编译参数中加上--with-stream
windows下的nginx直接配置nginx.conf即可
在nginx.conf的events的同级目录配置stream块，如下示例

events {
    worker_connections  1024;
}

stream {
    upstream socket_server{
		server 127.0.0.1:3802 weight=1;
		server 127.0.0.1:3803 weight=1;
    }
    #监听socket端口 
    server {
		listen 3801;
		proxy_pass socket_server;
		proxy_connect_timeout 10s;
        proxy_timeout 300s
    }
}