> wget http://nginx.org/download/nginx-1.9.0.tar.gz
> tar zxvf nginx-1.9.0.tar.gz

worker_processes auto;
error_log /var/log/nginx/error.log info;
stream {
  upstream backend {
    hash $remote_addr consistent;
    server backend1.example.com:12345 weight=5;
    server 127.0.0.1:12345      max_fails=3 fail_timeout=30s;
    server unix:/tmp/backend3;
  }
  server {
    listen 12345;
    proxy_connect_timeout 1s;
    proxy_timeout 3s;
    proxy_pass backend;
  }
  server {
    listen [::1]:12345;
    proxy_pass unix:/tmp/stream.socket;
  }
}

# wget http://nginx.org/download/nginx-1.4.4.tar.gz
# tar zxvf nginx-1.4.4.tar.gz
# cd nginx-1.4.4
# ./configure --add-module=/path/to/nginx_tcp_proxy_module
# make
# make install

http {
  listen 80;
  location /status {
    check_status;
  }
}
tcp {
  upstream cluster_www_ttlsa_com {
    # simple round-robin
    server 127.0.0.1:1234;
    check interval=3000 rise=2 fall=5 timeout=1000;
    #check interval=3000 rise=2 fall=5 timeout=1000 type=ssl_hello;
    #check interval=3000 rise=2 fall=5 timeout=1000 type=http;
    #check_http_send "GET / HTTP/1.0\r\n\r\n";
    #check_http_expect_alive http_2xx http_3xx;
  }
  server {
    listen 8888;
    proxy_pass cluster_www_ttlsa_com;
  }
}

http {
  listen 80;
  location /status {
    check_status;
  }
}
tcp {
 timeout 1d;
  proxy_read_timeout 10d;
  proxy_send_timeout 10d;
  proxy_connect_timeout 30;
  upstream cluster_www_ttlsa_com {
    # simple round-robin
    server 127.0.0.1:1234;
    check interval=3000 rise=2 fall=5 timeout=1000;
    #check interval=3000 rise=2 fall=5 timeout=1000 type=ssl_hello;
    #check interval=3000 rise=2 fall=5 timeout=1000 type=http;
    #check_http_send "GET / HTTP/1.0\r\n\r\n";
    #check_http_expect_alive http_2xx http_3xx;
  }
  server {
    listen 8888;
    proxy_pass cluster_www_ttlsa_com;
 so_keepalive on;
    tcp_nodelay on;
  }
}