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#!/usr/bin/env python3
"""Example for aiohttp.web websocket server
"""
import asyncio
import os
from aiohttp.web import (Application, Response, WebSocketResponse, WSMsgType,
run_app)
WS_FILE = os.path.join(os.path.dirname(__file__), 'websocket.html')
async def wshandler(request):
resp = WebSocketResponse()
ok, protocol = resp.can_prepare(request)
if not ok:
with open(WS_FILE, 'rb') as fp:
return Response(body=fp.read(), content_type='text/html')
await resp.prepare(request)
try:
print('Someone joined.')
for ws in request.app['sockets']:
ws.send_str('Someone joined')
request.app['sockets'].append(resp)
async for msg in resp:
if msg.type == WSMsgType.TEXT:
for ws in request.app['sockets']:
if ws is not resp:
ws.send_str(msg.data)
else:
return resp
return resp
finally:
request.app['sockets'].remove(resp)
print('Someone disconnected.')
for ws in request.app['sockets']:
ws.send_str('Someone disconnected.')
async def on_shutdown(app):
for ws in app['sockets']:
await ws.close()
async def init(loop):
app = Application(loop=loop)
app['sockets'] = []
app.router.add_get('/', wshandler)
app.on_shutdown.append(on_shutdown)
return app
loop = asyncio.get_event_loop()
app = loop.run_until_complete(init(loop))
run_app(app)
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