Question

我真的非常尝试用nginx配置tornado websocket连接配置，最后我遇到了一个问题，但我无法修复它。我的配置有误吗？这是我的websocket.py：

class Application(tornado.web.Application):


   def __init__(self):

       handlers = [
            (r"/", ChatSocketHandler)
       ]
       settings = dict(

        cookie_secret="__TODO:_GENERATE_YOUR_OWN_RANDOM_VALUE_HERE__",
        template_path=os.path.join(os.path.dirname(__file__), 
          "templates"),
        static_path=os.path.join(os.path.dirname(__file__), "static"),
        xsrf_cookies=False,
        debug = True
    )
    super(Application, self).__init__(handlers, **settings)

class ChatSocketHandler(tornado.websocket.WebSocketHandler):

    def check_origin(self, origin):
       return True
    def open(self, *args, **kwargs):
       print('connection opened')

    def on_close(self):
         print('connection closed')
    def on_message(self, message):
         print(message)
         self.write_message(message)

这是我的客户端脚本：

<script>

  let url = "ws://104.131.115.151:8888/";
  let socket = new WebSocket(url);
  socket.onmessage = function(event) {
      console.log(event);
  };
  socket.onopen = function () {
     console.log('opend');
     socket.send('Hello World')
  };
  socket.onclose = function () {
      console.log('closed');
  };

</script>

在我的网络浏览器控制台中：

opened
closed

在没有nginx配置的本地运行时：

opened
MessageEvent{...}

这是我的nginx配置：

map $http_upgrade $connection_upgrade {
        default upgrade;
        ''      close;
 }
upstream pythonserver {

    server 127.0.0.1:8888;

}
server{
         listen 80;
         server_name 209.97.139.107;

         location /chatsocket {

              proxy_pass http://pythonserver;
              proxy_redirect off;
              proxy_set_header Host $host;
              proxy_set_header X-Real-IP $remote_addr;
              proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
              proxy_buffers 8 32k;
              proxy_buffer_size 64k;
              proxy_read_timeout 86400s;
              proxy_send_timeout 86400s;
              keepalive_timeout 90;
              proxy_cache off;
              proxy_buffering off;
              proxy_http_version 1.1;
              proxy_set_header Upgrade $http_upgrade;
              proxy_set_header Connection "Upgrade";
              include         uwsgi_params;
              uwsgi_pass unix:/home/apideveloper/api/app.sock;

        }
        location / {
              include         uwsgi_params;
              uwsgi_pass unix:/home/apideveloper/api/app.sock;

        }
}

此外，我正在使用https://digitalocean.com云和我的服务器网址http://209.97.139.107/

Answer 1

您的nginx配置很可能不完整。

当浏览器尝试连接到websocket时，它会发送Upgrade和Connection个http标头。这告诉服务器升级到websocket的连接。

问题（这是一个常见的问题）似乎是浏览器将升级头发送到nginx，但是nginx没有将这些头发送回Tornado。对于成功的websocket连接，升级标头必须到达您的Tornado后端。

<强>解决方案：

解决方案是告诉Nginx将升级标头发送回Tornado，以便完成websocket连接。

您的配置应如下所示：

location / {
    # ... other variables ...

    # variables for websocket
    proxy_http_version 1.1;
    proxy_set_header Upgrade $http_upgrade;
    proxy_set_header Connection "Upgrade";
}

重新加载你的Nginx服务器，它应该可以工作。

websocket连接立即关闭nginx龙卷风

1 个答案: