The socketio client successfully connects to the server and sends messages with emit to the server but the other direction server to the client fails. I cannot find the source of error. It is
Here is the server python in app.py based on the example in python-socketio website:
from aiohttp import web
import socketio
sio = socketio.AsyncServer()
app = web.Application()
sio.attach(app)
async def index(request):
"""Serve the client-side application."""
with open('index.html') as f:
return web.Response(text=f.read(), content_type='text/html')
@sio.on('connect', namespace='/chat')
def connect(sid, environ):
print("connect", sid)
@sio.on('chat message', namespace='/chat')
async def message(sid, data):
print("server received message!", data)
await sio.emit('reply', data)
await sio.send(data)
@sio.on('disconnect', namespace='/chat')
def disconnect(sid):
print('disconnect', sid)
app.router.add_static('/static', 'static')
app.router.add_get('/', index)
if __name__ == '__main__':
web.run_app(app)
I tried menting one of await sio.emit('reply', data) or await sio.send(data) but result was the same. Here is the javascript client in index.html:
<html>
<head>
<script src=".io/1.3.5/socket.io.min.js"></script>
</head>
<body>
<form id="the_form">
<input type="input" name="msg" id="msg"></input>
<input type="submit" value="➤"></input>
</form>
<script>
var socket = io('http://localhost:8080/chat');
socket.on('connect', function(){console.log('connect!')});
socket.on('message', function(msg){console.log('message!', msg)});
socket.on('disconnect', function(){console.log('disconnect!')});
socket.on('reply', function(msg){console.log('reply!', msg)});
document.getElementById('the_form').onsubmit = function(e) {
let msg = document.getElementById('msg').value;
document.getElementById('msg').value = '';
// send it to the server
socket.emit('chat message', msg);
return false
};
</script>
</body>
</html>
On the terminal window, I run the server. Then, I open two browser windows (Chrome Version 69.0.3497.100 (Official Build) (64-bit)) and send 'test' from one of them. Here is what I see on each window:
Terminal
$ python3 app.py
======== Running on :8080 ========
(Press CTRL+C to quit)
connect 9b18034f7b8b4d4c857dec394ef01429
connect 3adea48a3e00459f807855da0337599c
server received message! test
Window 1 (console log)
connect!
Window 2 (console log)
connect!
The socketio client successfully connects to the server and sends messages with emit to the server but the other direction server to the client fails. I cannot find the source of error. It is
Here is the server python in app.py based on the example in python-socketio website:
from aiohttp import web
import socketio
sio = socketio.AsyncServer()
app = web.Application()
sio.attach(app)
async def index(request):
"""Serve the client-side application."""
with open('index.html') as f:
return web.Response(text=f.read(), content_type='text/html')
@sio.on('connect', namespace='/chat')
def connect(sid, environ):
print("connect", sid)
@sio.on('chat message', namespace='/chat')
async def message(sid, data):
print("server received message!", data)
await sio.emit('reply', data)
await sio.send(data)
@sio.on('disconnect', namespace='/chat')
def disconnect(sid):
print('disconnect', sid)
app.router.add_static('/static', 'static')
app.router.add_get('/', index)
if __name__ == '__main__':
web.run_app(app)
I tried menting one of await sio.emit('reply', data) or await sio.send(data) but result was the same. Here is the javascript client in index.html:
<html>
<head>
<script src="https://cdnjs.cloudflare./ajax/libs/socket.io/1.3.5/socket.io.min.js"></script>
</head>
<body>
<form id="the_form">
<input type="input" name="msg" id="msg"></input>
<input type="submit" value="➤"></input>
</form>
<script>
var socket = io('http://localhost:8080/chat');
socket.on('connect', function(){console.log('connect!')});
socket.on('message', function(msg){console.log('message!', msg)});
socket.on('disconnect', function(){console.log('disconnect!')});
socket.on('reply', function(msg){console.log('reply!', msg)});
document.getElementById('the_form').onsubmit = function(e) {
let msg = document.getElementById('msg').value;
document.getElementById('msg').value = '';
// send it to the server
socket.emit('chat message', msg);
return false
};
</script>
</body>
</html>
On the terminal window, I run the server. Then, I open two browser windows (Chrome Version 69.0.3497.100 (Official Build) (64-bit)) and send 'test' from one of them. Here is what I see on each window:
Terminal
$ python3 app.py
======== Running on http://0.0.0.0:8080 ========
(Press CTRL+C to quit)
connect 9b18034f7b8b4d4c857dec394ef01429
connect 3adea48a3e00459f807855da0337599c
server received message! test
Window 1 (console log)
connect!
Window 2 (console log)
connect!
-
try doing
await sio.emit('reply', room=sid)and just deleteawait sio.send(data)– evgeni fotia Commented Oct 13, 2018 at 10:03 -
OK, I did that. didn't work. I also tried
sio.enter_room(sid, 'test_room')in connect function andawait sio.emit('reply', room='test_room')as a way to send the message to the other client instead of echoing it. but none of them worked so far. – Mehdi Commented Oct 13, 2018 at 10:07 -
what about this one
await sio.emit('reply', data, room=sid)– evgeni fotia Commented Oct 13, 2018 at 10:13 - yes, sorry I meant that. – Mehdi Commented Oct 13, 2018 at 10:16
- 2 Check these exemples from the official github page github./miguelgrinberg/python-socketio/tree/master/examples I don't know witch one apply to your case. – evgeni fotia Commented Oct 13, 2018 at 10:20
1 Answer
Reset to default 2Based on the examples here suggested in ments by evgeni-fotia, the namespace argument is necessary here. It seems the default namespace, at least on this version, is not the namespace of the async function. So, the correct way to broadcast with echo back a message is the following:
@sio.on('chat message', namespace='/chat')
async def message(sid, data):
print("server received message!", data)
await sio.emit('reply', data, namespace='/chat')
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