139 lines
4.0 KiB
Python
139 lines
4.0 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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import txaio
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from twisted.internet import reactor
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from autobahn.twisted.websocket import WebSocketServerFactory, \
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WebSocketServerProtocol, \
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listenWS
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from autobahn.websocket.types import ConnectionDeny
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class BaseService:
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"""
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Simple base for our services.
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"""
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def __init__(self, proto):
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self.proto = proto
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self.is_closed = False
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def onOpen(self):
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pass
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def onClose(self, wasClean, code, reason):
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pass
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def onMessage(self, payload, isBinary):
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pass
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class Echo1Service(BaseService):
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"""
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Awesome Echo Service 1.
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"""
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def onMessage(self, payload, isBinary):
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if not isBinary:
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msg = "Echo 1 - {}".format(payload.decode('utf8'))
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print(msg)
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self.proto.sendMessage(msg.encode('utf8'))
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class Echo2Service(BaseService):
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"""
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Awesome Echo Service 2.
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"""
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def onMessage(self, payload, isBinary):
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if not isBinary:
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msg = "Echo 2 - {}".format(payload.decode('utf8'))
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print(msg)
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self.proto.sendMessage(msg.encode('utf8'))
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class ServiceServerProtocol(WebSocketServerProtocol):
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SERVICEMAP = {'/echo1': Echo1Service,
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'/echo2': Echo2Service}
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def __init__(self):
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self.service = None
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self.is_closed = txaio.create_future()
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def onConnect(self, request):
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# request has all the information from the initial
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# WebSocket opening handshake ..
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print(request.peer)
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print(request.headers)
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print(request.host)
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print(request.path)
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print(request.params)
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print(request.version)
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print(request.origin)
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print(request.protocols)
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print(request.extensions)
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# We map to services based on path component of the URL the
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# WebSocket client requested. This is just an example. We could
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# use other information from request, such has HTTP headers,
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# WebSocket subprotocol, WebSocket origin etc etc
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##
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if request.path in self.SERVICEMAP:
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cls = self.SERVICEMAP[request.path]
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self.service = cls(self)
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else:
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err = "No service under %s" % request.path
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print(err)
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raise ConnectionDeny(404, unicode(err))
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def onOpen(self):
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if self.service:
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self.service.onOpen()
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def onMessage(self, payload, isBinary):
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if self.service:
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self.service.onMessage(payload, isBinary)
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def onClose(self, wasClean, code, reason):
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if self.service:
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self.service.onClose(wasClean, code, reason)
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if __name__ == '__main__':
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factory = WebSocketServerFactory(u"ws://127.0.0.1:9000")
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factory.protocol = ServiceServerProtocol
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listenWS(factory)
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reactor.run()
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