正在向flask SocketIO注册服务器事件

Question

我开始使用flask和SocketIOhttps://github.com/miguelgrinberg/Flask-SocketIO.

我想向flask服务器发布一个字符串，然后通过SocketIO将其发送到客户端网页。

通常情况下，我的邮政编码看起来像：

@app.route('/index',methods=['POST'])
def index():
    token = request.form['token']

据我所知，将数据从服务器发送到客户端页面需要以下内容：

@socketio.on('event', namespace='/test')
def test_message(message):
    emit('my response', {'data': message['data']}, broadcast=False)

我不清楚如何将这两个函数绑定在一起，以便在发布时将令牌的值发送给客户端。

我能在文档中找到的最接近的是：

Receiving Messages¶
When using SocketIO messages are received by both parties as events. On the client side Javascript callbacks are used. With Flask-SocketIO the server needs to register handlers for these events, similarly to how routes are handled by view functions.

我该怎么做？

Answer 1

您的假设是正确的。首先，将数据POST到烧瓶：

.ajax({
    url: "{{ url_for('index') }}",
    method: "POST",
    data: {
        token: "value"
    }
});

您的视图看起来像

@app.route('/index',methods=['POST'])
def index():
    token = request.form['token']
    test_message(dict(data=token))
    return '1'

你的JavaScript看起来像

var socket = io.connect('http://' + document.domain + ':' + location.port + namespace);
socket.on('connect', function() {
    socket.emit('my event', {data: 'I'm connected!'});
});
socket.on('my response', function(msg) {
    // do something with msg.data
});