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#!/usr/bin/env python
import asyncio
import signal
import websockets
async def echo(websocket):
async for message in websocket:
await websocket.send(message)
async def server():
# Set the stop condition when receiving SIGTERM.
loop = asyncio.get_running_loop()
stop = loop.create_future()
loop.add_signal_handler(signal.SIGTERM, stop.set_result, None)
async with websockets.serve(echo, "localhost", 8765):
await stop
asyncio.run(server())