Workerman 用了WSS无法用$_SERVER['REMOTE_ADDR']取得用户IP

因为用了nginx做了wss代理，所以 $_SERVER 得到的ip值实际上是nginx服务器的ip，并不是客户端的实际ip，如果是nginx代理在本机则$_SERVER得到的可能是127.0.0.1。

设置nginx代理http header
解决方法是在nginx代理上设置下header，加个proxy_set_header X-Real-IP $remote_addr;，将真正的ip地址通过http header的方式传递过来。类似下面的配置

    server {
        listen 4431;

        ssl on;
        ssl_certificate /etc/nginx/conf.d/ssl/laychat/laychat.pem;
        ssl_certificate_key /etc/nginx/conf.d/ssl/laychat/laychat.key;
        ssl_session_timeout 5m;
        ssl_session_cache shared:SSL:50m;
        ssl_protocols SSLv3 SSLv2 TLSv1 TLSv1.1 TLSv1.2;
        ssl_ciphers ALL:!ADH:!EXPORT56:RC4+RSA:+HIGH:+MEDIUM:+LOW:+SSLv2:+EXP;

        location /
        {
              proxy_pass http://127.0.0.1:7272;
              proxy_http_version 1.1;
              proxy_set_header Upgrade $http_upgrade;
              proxy_set_header Connection "Upgrade";
              proxy_set_header X-Real-IP $remote_addr;
          }
    }

workerman读取http header
在start_gateway.php中Worker::runAll()前加上下面的代码

    $gateway->onConnect = function($connection)
    {
        $connection->onWebSocketConnect = function($connection , $http_header)
       {
            $_SESSION = $_SERVER;
        };
    };

Events.php
Events.php中就可以通过$_SESSION来得到客户端的实际ip地址了