add reference ssl echo server using websockets and nginx reverse proxy to terminate ssl

test/compatibility/python/websockets/echo_server.py

@@ -5,18 +5,15 @@
 import asyncio
 import websockets
 
-async def hello(websocket, path):
-    await websocket.send(f"> Welcome !")
 
-    name = await websocket.recv()
-    print(f"< {name}")
+async def echo(websocket, path):
+    msg = await websocket.recv()
+    print(f'Received {len(msg)} bytes')
+    await websocket.send(msg)
 
-    greeting = f"Hello {name}!"
 
-    await websocket.send(greeting)
-    print(f"> {greeting}")
-
-start_server = websockets.serve(hello, 'localhost', 8765)
+print('Serving on localhost:8766')
+start_server = websockets.serve(echo, 'localhost', 8766, max_size=2 ** 25)
 
 asyncio.get_event_loop().run_until_complete(start_server)
 asyncio.get_event_loop().run_forever()