added websocket test flies

backend/websocket/websocket_base.py

@@ -1,20 +1,52 @@
 #  Copyright (c) 2019. Tobias Kurze
 
 import logging
+import threading
+import time
+
+from flask import Flask, request
 from flask_socketio import SocketIO, emit
 
 from backend import app
 
 logging.basicConfig()
 
-socketio = SocketIO(app)
+app = Flask(__name__)
+app.config['SECRET_KEY'] = 'secret!'
+
+async_mode = 'threading'
+async_mode = None
+socketio = SocketIO(app, cors_allowed_origins="*", async_mode=async_mode)
+thread = None
+thread_lock = threading.Lock()
+
+clients = []
+
+
+def background_thread():
+    """Example of how to send server generated events to clients."""
+    count = 0
+    while True:
+        socketio.sleep(3)
+        print("server_event ")
+        count += 1
+        socketio.emit('server_event',
+                      {'data': 'Server generated event', 'count': count},
+                      )
+
+
+def ack():
+    print('message was received!')
 
 
 @socketio.on('my_event')
 def test_message(message: dict):
     print("received msg!")
     print(message)
-    # emit('my_event', {'data': message['data']})
+    if isinstance(message, str):
+        emit('my_response', 'tolle Antwort! (got only a string!)', callback=ack)
+    else:
+        emit('my_response', {'data': message['data']}, callback=ack)
 
 
 @socketio.on('my broadcast event', namespace='/')
@@ -25,7 +57,11 @@ def test_message(message):
 @socketio.on('connect')
 def test_connect():
     print("connected")
-    emit('connect', "antwort")
+    global thread
+    with thread_lock:
+        if thread is None:
+            thread = socketio.start_background_task(background_thread)
+    emit('connect', "You are connected!")
 
 
 @socketio.on('disconnect', namespace='/')
@@ -33,10 +69,55 @@ def test_disconnect():
     print('Client disconnected')
 
 
+@socketio.on_error()
+def handle_error(error):
+    print(error)
+
+
+def start_in_thread():
+    socket_thread = threading.Thread(target=lambda appl, host, port: socketio.run(app=appl, host=host, port=port),
+                                     args=(app, "localhost", 5000))
+    socket_thread.start()
+    return socket_thread
+
+
+@app.route("/")
+def root():
+    return """<script src="//cdnjs.cloudflare.com/ajax/libs/socket.io/2.2.0/socket.io.js" integrity="sha256-yr4fRk/GU1ehYJPAs8P4JlTgu0Hdsp4ZKrx8bDEDC3I=" crossorigin="anonymous"></script>
+<script type="text/javascript" charset="utf-8">
+    var socket = io();
+    socket.on('connect', function() {
+        console.log("connected!");
+        socket.emit('my_event', {data: 'I am connected!'});
+    });
+    socket.on('my_response', function(resp) {
+        console.log('got response:');
+        console.log(resp);
+    });   
+</script>"""
+
+
 if __name__ == '__main__':
     print("running main")
-    socketio.init_app(app, cors_allowed_origins="*")
-    socketio.run(app, host="localhost", port=5000)
+    # socketio.init_app(app, cors_allowed_origins="*")
+
+    #while len(clients) <= 0:
+    #    time.sleep(1)
+
+    #while True:
+    #    time.sleep(2)
+    #    print("sending message...")
+    #    socketio.send("lala")
+    #    print("send lala")
+    #    print(clients[0])
+    #    socketio.emit("server_event", {'msg': "tolle nachricht"}, room=clients[0])
+    #    with app.test_request_context('/'):
+    #        socketio.emit('server_event', "You!: server_event", namespace="/")
+    #    print("send bla")
+
+    socketio.run(app, host="localhost", port=5000, debug=True)
+    # socketio.run(app, debug=True)
     # ENDE
 
-    print("runnung?!")
+    print("running?!")
+    # t.join()