PHP监听WebSocket，本地可以访问，外网不可以。

<code class="php">   $this->socket = socket_create(AF_INET,SOCK_STREAM, SOL_TCP);
   socket_set_option($this->socket, SOL_SOCKET, SO_REUSEADDR,true);
   socket_bind($this->socket, 0 , $this->port);
   //监听端口
   socket_listen($this->socket);
   socket_getsockname($this->socket, $ip,$port);
   printf("Server Open %s:%d\n",$ip,$port);</code>

<code class="php">   $this->socket = socket_create(AF_INET,SOCK_STREAM, SOL_TCP);
   socket_set_option($this->socket, SOL_SOCKET, SO_REUSEADDR,true);
   socket_bind($this->socket, 0 , $this->port);
   //监听端口
   socket_listen($this->socket);
   socket_getsockname($this->socket, $ip,$port);
   printf("Server Open %s:%d\n",$ip,$port);</code>