Flask插座.io：频繁超时

Question

我有一个烧瓶-插座.io非常标准的应用程序：

服务器：eventlet 我使用以下方式启动应用程序：socketio.run公司（应用程序，主机=“0.0.0.0”）

我经常但并非总是会有某种超时：

Traceback (most recent call last):
  File "/projects/ici_chat_prototype01/env/lib/python3.5/site-packages/eventlet/wsgi.py", line 507, in handle_one_response
    result = self.application(self.environ, start_response)
  File "/projects/ici_chat_prototype01/env/lib/python3.5/site-packages/flask/app.py", line 1997, in __call__
    return self.wsgi_app(environ, start_response)
  File "/projects/ici_chat_prototype01/env/lib/python3.5/site-packages/flask_socketio/__init__.py", line 42, in __call__
    start_response)
  File "/projects/ici_chat_prototype01/env/lib/python3.5/site-packages/engineio/middleware.py", line 47, in __call__
    return self.engineio_app.handle_request(environ, start_response)
  File "/projects/ici_chat_prototype01/env/lib/python3.5/site-packages/socketio/server.py", line 360, in handle_request
    return self.eio.handle_request(environ, start_response)
  File "/projects/ici_chat_prototype01/env/lib/python3.5/site-packages/engineio/server.py", line 267, in handle_request
    environ, start_response)
  File "/projects/ici_chat_prototype01/env/lib/python3.5/site-packages/engineio/socket.py", line 89, in handle_get_request
    start_response)
  File "/projects/ici_chat_prototype01/env/lib/python3.5/site-packages/engineio/socket.py", line 130, in _upgrade_websocket
    return ws(environ, start_response)
  File "/projects/ici_chat_prototype01/env/lib/python3.5/site-packages/engineio/async_eventlet.py", line 19, in __call__
    return super(WebSocketWSGI, self).__call__(environ, start_response)
  File "/projects/ici_chat_prototype01/env/lib/python3.5/site-packages/eventlet/websocket.py", line 127, in __call__
    self.handler(ws)
  File "/projects/ici_chat_prototype01/env/lib/python3.5/site-packages/engineio/socket.py", line 155, in _websocket_handler
    pkt = ws.wait()
  File "/projects/ici_chat_prototype01/env/lib/python3.5/site-packages/eventlet/websocket.py", line 633, in wait
    for i in self.iterator:
  File "/projects/ici_chat_prototype01/env/lib/python3.5/site-packages/eventlet/websocket.py", line 503, in _iter_frames
    message = self._recv_frame(message=fragmented_message)
  File "/projects/ici_chat_prototype01/env/lib/python3.5/site-packages/eventlet/websocket.py", line 526, in _recv_frame
    header = recv(2)
  File "/projects/ici_chat_prototype01/env/lib/python3.5/site-packages/eventlet/websocket.py", line 442, in _get_bytes
    d = self.socket.recv(numbytes - len(data))
  File "/projects/ici_chat_prototype01/env/lib/python3.5/site-packages/eventlet/greenio/base.py", line 360, in recv
    return self._recv_loop(self.fd.recv, b'', bufsize, flags)
  File "/projects/ici_chat_prototype01/env/lib/python3.5/site-packages/eventlet/greenio/base.py", line 354, in _recv_loop
    self._read_trampoline()
  File "/projects/ici_chat_prototype01/env/lib/python3.5/site-packages/eventlet/greenio/base.py", line 325, in _read_trampoline
    timeout_exc=socket_timeout('timed out'))
  File "/projects/ici_chat_prototype01/env/lib/python3.5/site-packages/eventlet/greenio/base.py", line 207, in _trampoline
    mark_as_closed=self._mark_as_closed)
  File "/projects/ici_chat_prototype01/env/lib/python3.5/site-packages/eventlet/hubs/__init__.py", line 163, in trampoline
    return hub.switch()
  File "/projects/ici_chat_prototype01/env/lib/python3.5/site-packages/eventlet/hubs/hub.py", line 295, in switch
    return self.greenlet.switch()
socket.timeout: timed out

我不能解释这个回溯。有烧瓶经验的人可以吗-插座.io帮忙吗？在

我没有张贴任何代码，因为我不知道从哪里开始。回溯中的所有文件都来自已安装的模块。在

编辑： 我有一些关于插座.io请求。发生上述异常后，将记录以下请求：

^{pr2}$

Answer 1

如果要切换到调试模式，可以使用socketio.run(app, host='0.0.0.0', port=5000, debug=True)。在

---

然后你可以看看socket.io official documentation website，尤其是client-api和{a3}。 因为在server-api的the httpsserver-options 部分（对于javascript），您可以看到在运行服务器时有一些选项，例如：

  pingInterval: 10000,
  pingTimeout: 5000,

---

我希望当您使用socketio.run(app, host='0.0.0.0', port=5000, debug=True,pingInterval = 10000, pingTimeout= 5000)运行服务器时，这些参数可以被重用为kwargs

---

在flask-socketio文档中的“错误处理”部分，有一些关于deal with exceptions的好提示

你可以添加一些

^{pr2}$

---

另一个提示可以是，针对超时问题调整前面的错误处理程序，并在触发此事件时重新运行服务器。在

您还可以注意到：

The message and data arguments of the current request can also be inspected with the request.event variable, which is useful for error logging and debugging outside the event handler

您也可以使用下面的代码来处理final套接字超时：超时错误：

try:
    socketio.run(app,...
except socket.error as socketerror:
    print("Error: ", socketerror)