This repo provides a working example of web socket communication between a client and server.
The server is a Python Flask/Greenlet web server and the client is a simple html page using the SocketIO js library.
It demonstrates the following:
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A simple flask route response with the index.html page.
@app.route('/') def index():
print 'Client hitting the index page.' return render_template('index.html') -
The establishment of a websocket connection, during which the server prints as a sanity check and sends (emits) some data to the client under the 'my response' event type.
@socketio.on('connect', namespace='/test') def test_connect(): print 'Server received start of connection from client.' emit('my response', {'data': 'Connected', 'count': 0})
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A client button click that calls a js function which emits back to the server under the event type 'start_event_processor'. This is received by the server, which prints to prove it's working. The server also emits back to the client, as an acknowledgment.
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The use of a specific namespace to manage messages to and from the server.