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#!/usr/bin/env python3
"""Example for aiohttp.web websocket server
"""
import asyncio
import os
from aiohttp.web import Application, Response, MsgType, WebSocketResponse
WS_FILE = os.path.join(os.path.dirname(__file__), 'websocket.html')
@asyncio.coroutine
def wshandler(request):
resp = WebSocketResponse()
ok, protocol = resp.can_start(request)
if not ok:
with open(WS_FILE, 'rb') as fp:
return Response(body=fp.read(), content_type='text/html')
resp.start(request)
print('Someone joined.')
for ws in request.app['sockets']:
ws.send_str('Someone joined')
request.app['sockets'].append(resp)
while True:
msg = yield from resp.receive()
if msg.tp == MsgType.text:
for ws in request.app['sockets']:
if ws is not resp:
ws.send_str(msg.data)
else:
break
request.app['sockets'].remove(resp)
print('Someone disconnected.')
for ws in request.app['sockets']:
ws.send_str('Someone disconnected.')
return resp
@asyncio.coroutine
def init(loop):
app = Application(loop=loop)
app['sockets'] = []
app.router.add_route('GET', '/', wshandler)
handler = app.make_handler()
srv = yield from loop.create_server(handler, '127.0.0.1', 8080)
print("Server started at http://127.0.0.1:8080")
return app, srv, handler
@asyncio.coroutine
def finish(app, srv, handler):
for ws in app['sockets']:
ws.close()
app['sockets'].clear()
yield from asyncio.sleep(0.1)
srv.close()
yield from handler.finish_connections()
yield from srv.wait_closed()
loop = asyncio.get_event_loop()
app, srv, handler = loop.run_until_complete(init(loop))
try:
loop.run_forever()
except KeyboardInterrupt:
loop.run_until_complete(finish(app, srv, handler))
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