75 lines
2.1 KiB
Python
75 lines
2.1 KiB
Python
from __future__ import print_function
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import sys
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from twisted.internet import endpoints
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from twisted.internet.defer import (
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Deferred,
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inlineCallbacks,
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)
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from twisted.internet.task import react, deferLater
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from autobahn.twisted.websocket import (
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WebSocketClientProtocol,
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WebSocketClientFactory,
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)
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class RelayEchoClient(WebSocketClientProtocol):
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def onOpen(self):
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self._received = b""
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self.sendMessage(
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u"please relay {} for side {}".format(
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self.factory.token,
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self.factory.side,
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).encode("ascii"),
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True,
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)
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def onMessage(self, data, isBinary):
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print(">onMessage: {} bytes".format(len(data)))
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print(data, isBinary)
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if data == b"ok\n":
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self.factory.ready.callback(None)
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else:
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self._received += data
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if False:
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# test abrupt hangup from receiving side
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self.transport.loseConnection()
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def onClose(self, wasClean, code, reason):
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print(">onClose", wasClean, code, reason)
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self.factory.done.callback(reason)
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if not self.factory.ready.called:
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self.factory.ready.errback(RuntimeError(reason))
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@react
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@inlineCallbacks
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def main(reactor):
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will_send_message = len(sys.argv) > 1
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ep = endpoints.clientFromString(reactor, "tcp:localhost:4002")
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f = WebSocketClientFactory("ws://127.0.0.1:4002/")
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f.reactor = reactor
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f.protocol = RelayEchoClient
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f.token = "a" * 64
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f.side = "0" * 16 if will_send_message else "1" * 16
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f.done = Deferred()
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f.ready = Deferred()
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proto = yield ep.connect(f)
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print("proto", proto)
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yield f.ready
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print("ready")
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if will_send_message:
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for _ in range(5):
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print("sending message")
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proto.sendMessage(b"it's a message", True)
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yield deferLater(reactor, 0.2)
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yield proto.sendClose()
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print("closing")
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yield f.done
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print("relayed {} bytes:".format(len(proto._received)))
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print(proto._received.decode("utf8"))
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