72 lines
2.4 KiB
Python
72 lines
2.4 KiB
Python
###############################################################################
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#
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# The MIT License (MIT)
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#
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# Copyright (c) Tavendo GmbH
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#
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# Permission is hereby granted, free of charge, to any person obtaining a copy
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# of this software and associated documentation files (the "Software"), to deal
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# in the Software without restriction, including without limitation the rights
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# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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# copies of the Software, and to permit persons to whom the Software is
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# furnished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included in
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# all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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# THE SOFTWARE.
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#
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###############################################################################
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from autobahn.asyncio.websocket import WebSocketServerProtocol, \
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WebSocketServerFactory
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import json
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import trollius
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class SlowSquareServerProtocol(WebSocketServerProtocol):
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@trollius.coroutine
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def slowsquare(self, x):
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if x > 5:
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raise Exception("number too large")
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else:
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yield trollius.sleep(1)
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raise trollius.Return(x * x)
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@trollius.coroutine
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def onMessage(self, payload, isBinary):
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if not isBinary:
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x = json.loads(payload.decode('utf8'))
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try:
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res = yield self.slowsquare(x)
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except Exception as e:
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self.sendClose(1000, "Exception raised: {0}".format(e))
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else:
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self.sendMessage(json.dumps(res).encode('utf8'))
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if __name__ == '__main__':
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factory = WebSocketServerFactory(u"ws://127.0.0.1:9000", debug=False)
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factory.protocol = SlowSquareServerProtocol
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loop = trollius.get_event_loop()
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coro = loop.create_server(factory, '127.0.0.1', 9000)
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server = loop.run_until_complete(coro)
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try:
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loop.run_forever()
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except KeyboardInterrupt:
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pass
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finally:
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server.close()
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loop.close()
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