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###############################################################################
#
# The MIT License (MIT)
#
# Copyright (c) Crossbar.io Technologies GmbH
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
#
###############################################################################
import sys
from twisted.internet import reactor
from twisted.python import log
from autobahn.twisted.websocket import WebSocketClientFactory, \
WebSocketClientProtocol, \
connectWS
from autobahn.websocket.compress import *
class EchoClientProtocol(WebSocketClientProtocol):
def onConnect(self, response):
print "WebSocket extensions in use: %s" % response.extensions
def sendHello(self):
self.sendMessage("Hello, world!" * 100)
def onOpen(self):
self.sendHello()
def onMessage(self, payload, isBinary):
if not isBinary:
print("Text message received: {}".format(payload.decode('utf8')))
reactor.callLater(1, self.sendHello)
if __name__ == '__main__':
if len(sys.argv) < 2:
print "Need the WebSocket server address, i.e. ws://127.0.0.1:9000"
sys.exit(1)
log.startLogging(sys.stdout)
factory = WebSocketClientFactory(sys.argv[1])
factory.protocol = EchoClientProtocol
# Advanced usage: specify exact list of offers ("PMCE") we announce to server.
#
# Examples:
#
# this is just what the default constructor for PerMessageDeflateOffer
# creates anyway
offers1 = [PerMessageDeflateOffer(acceptNoContextTakeover=True,
acceptMaxWindowBits=True,
requestNoContextTakeover=False,
request_max_window_bits=0)]
# request the server to use a sliding window of 2^8 bytes
offers2 = [PerMessageDeflateOffer(True, True, False, 8)]
# request the server to use a sliding window of 2^8 bytes, but let the
# server fall back to "standard" if server does not support the setting
offers3 = [PerMessageDeflateOffer(True, True, False, 8),
PerMessageDeflateOffer(True, True, False, 0)]
# request "no context takeover", accept the same, but deny setting
# a sliding window. no fallback!
offers4 = [PerMessageDeflateOffer(True, False, True, 0)]
# offer "permessage-snappy", "permessage-bzip2" and "permessage-deflate"
# note that the first 2 are currently not even in an RFC draft
#
offers5 = []
if 'permessage-snappy' in PERMESSAGE_COMPRESSION_EXTENSION:
# this require snappy to be installed
offers5.append(PerMessageSnappyOffer())
offers5.append(PerMessageBzip2Offer(True, 1))
offers5.append(PerMessageDeflateOffer(True, True, False, 12))
# factory.setProtocolOptions(perMessageCompressionOffers = offers1)
# factory.setProtocolOptions(perMessageCompressionOffers = offers2)
# factory.setProtocolOptions(perMessageCompressionOffers = offers3)
# factory.setProtocolOptions(perMessageCompressionOffers = offers4)
factory.setProtocolOptions(perMessageCompressionOffers=offers5)
# factory.setProtocolOptions(autoFragmentSize = 4)
def accept(response):
if isinstance(response, PerMessageDeflateResponse):
return PerMessageDeflateResponseAccept(response)
elif isinstance(response, PerMessageBzip2Response):
return PerMessageBzip2ResponseAccept(response)
elif isinstance(response, PerMessageSnappyResponse):
return PerMessageSnappyResponseAccept(response)
factory.setProtocolOptions(perMessageCompressionAccept=accept)
connectWS(factory)
reactor.run()
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