socketio客户端成功连接到服务器,并使用emit
向服务器发送消息,但指向该客户端的另一个定向服务器失败。我找不到错误的根源。是
根据python-socketio网站上的示例,这是app.py
中的服务器python:
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)
我尝试评论await sio.emit('reply', data)
或await sio.send(data)
中的一个,但结果相同。这是index.html
中的javascript客户端:
<html>
<head>
<script src="https://cdnjs.cloudflare.com/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>
在终端窗口上,我运行服务器。然后,我打开两个浏览器窗口(Chrome版本69.0.3497.100(正式版本)(64位)),并从其中一个发送“测试”。这是我在每个窗口上看到的内容:
终端
$ python3 app.py
======== Running on http://0.0.0.0:8080 ========
(Press CTRL+C to quit)
connect 9b18034f7b8b4d4c857dec394ef01429
connect 3adea48a3e00459f807855da0337599c
server received message! test
窗口1(控制台日志)
connect!
窗口2(控制台日志)
connect!
答案 0 :(得分:0)
根据here中建议的示例comments by evgeni-fotia,此处需要使用namespace参数。似乎至少在此版本上,默认名称空间不是async函数的名称空间。因此,通过回显消息进行广播的正确方法如下:
<html>
<head>
<link rel="stylesheet" href="//code.jquery.com/ui/1.12.1/themes/base/jquery-ui.css">
<script src="https://code.jquery.com/jquery-2.0.3.js"></script>
<script src="https://code.jquery.com/ui/1.12.1/jquery-ui.js"></script>
</head>
<body>
<div id="accordion">
<h3>Section 1 - Open</h3>
<div>
<p>
Paragraph 1
</p>
</div>
<h3>Section 2</h3>
<div>
<p>
Paragraph 2
</p>
</div>
</div>
</body>
</html>