gevent-socketio 如何从服务器发起消息

gevent-socketio how to originate messages from server

这是我的代码:

class FirstNamespace(BaseNamespace):
    def on_some_event(self, msg):
        self.emit('ok '+msg)

@app.route('/socket.io/<path:remaining>')  # socket.io endpoint
def socketio_withpath(remaining):
    socketio_manage(request.environ,
                    {'/channel1': FirstNamespace}
    return 'ok'

@app.route('/dosomething/', methods=['POST'])  # simple http endpoint
def dosomething():
    data = request.form
    # ...
    # some code that triggers self.emit from within FirstNamespace 
    # ...
    return 'data processed'

我可以愉快地从前端发送套接字消息,它们得到处理,我收到来自 on_some_event 方法的回复。

问题是,我自己先发一条消息才能收到。

但是我怎样才能开始接收消息而不是第一个说话的人呢?

例如,如果有人向 /dosomething/ 端点发送 POST,它如何触发 emit 到我的客户端 websocket?

--

我可以在 flask-socketio 中做到这一点,但它对我的口味来说太神奇了。是否有较低级别的实现?

您必须将所有 channel1-Connections 收集到一个集合中,然后您才能向所有连接发送消息:

from weakref import WeakSet

class FirstNamespace(BaseNamespace):
    connections = WeakSet()

    def initialize(self):
        self.connections.add(self)

    def on_some_event(self, msg):
        self.emit('ok '+msg)

@app.route('/socket.io/<path:remaining>')  # socket.io endpoint
def socketio_withpath(remaining):
    socketio_manage(request.environ,
                    {'/channel1': FirstNamespace}
    return 'ok'

@app.route('/dosomething/', methods=['POST'])  # simple http endpoint
def dosomething():
    data = request.form
    for conn in FirstNamespace.connections:
        conn.emit("response_channel", data)
    return 'data processed'