Websockets return OSError raw readinto() returned invalid length?

L

LordBH2016-02-14 20:21:11

Python

LordBH, 2016-02-14 20:21:11

Hello, when using web sockets on Flask, I get the same error if I reload the page in the browser two or more times. This does not prevent the server from continuing to work. But over time, he stops responding.

main.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Chat</title>
    <script type="text/javascript" src="{{ url_for('static', filename='jquery-2.2.0.js') }}"></script>
    <script type="text/javascript" src="{{ url_for('static', filename='socket.io.min.js') }}"></script>
</head>
<body>

<script type="text/javascript" charset="utf-8">

     $(document).ready(function() {

         var socket = io.connect('http://' + document.domain + ':' + location.port);

         socket.emit('connect', {data: 'U connected'});

         socket.on('apply', function (e) {
            console.log('it works');
                $('#log').append('<br>' + e.data + '<br>')

        });

     });

</script>

<h1 id="log"></h1>
</body>
</html>

app.py

from flask_socketio import SocketIO, emit
from flask import Flask, render_template


app = Flask(__name__)
app.config['SECRET_KEY'] = 'secret!'
socket_io = SocketIO(app)


@app.route('/')
def index():
    return render_template('main.html')


@socket_io.on('connect')
def connect():
    emit('apply', {'data': "Connect"})

if __name__ == '__main__':
    socket_io.run(app, debug=True)

Error code

Traceback (most recent call last):
  File "/usr/local/lib/python3.5/site-packages/eventlet/greenpool.py", line 82, in _spawn_n_impl
    func(*args, **kwargs)
  File "/usr/local/lib/python3.5/site-packages/eventlet/wsgi.py", line 703, in process_request
    proto.__init__(sock, address, self)
  File "/usr/local/lib/python3.5/socketserver.py", line 684, in __init__
    self.handle()
  File "/usr/local/lib/python3.5/http/server.py", line 417, in handle
    self.handle_one_request()
  File "/usr/local/lib/python3.5/site-packages/eventlet/wsgi.py", line 315, in handle_one_request
    self.raw_requestline = self.rfile.readline(self.server.url_length_limit)
OSError: raw readinto() returned invalid length -1 (should have been between 0 and 8192)

What is the essence of this error and how to fix it?
Thank you.

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