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###############################################################################
#
# The MIT License (MIT)
#
# Copyright (c) Tavendo 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 txaio
txaio.use_asyncio()
try:
import asyncio
except ImportError:
# Trollius >= 0.3 was renamed
import trollius as asyncio
import autobahn
from autobahn.asyncio.websocket import WebSocketServerProtocol, \
WebSocketServerFactory
from autobahn.websocket.compress import PerMessageDeflateOffer, \
PerMessageDeflateOfferAccept
# FIXME: streaming mode API is currently incompatible with permessage-deflate!
USE_STREAMING_TESTEE = False
class TesteeServerProtocol(WebSocketServerProtocol):
"""
A message-based WebSocket echo server.
"""
def onMessage(self, payload, isBinary):
self.sendMessage(payload, isBinary)
class StreamingTesteeServerProtocol(WebSocketServerProtocol):
"""
A streaming WebSocket echo server.
"""
def onMessageBegin(self, isBinary):
WebSocketServerProtocol.onMessageBegin(self, isBinary)
self.beginMessage(isBinary)
def onMessageFrameBegin(self, length):
WebSocketServerProtocol.onMessageFrameBegin(self, length)
self.beginMessageFrame(length)
def onMessageFrameData(self, payload):
self.sendMessageFrameData(payload)
def onMessageFrameEnd(self):
pass
def onMessageEnd(self):
self.endMessage()
class TesteeServerFactory(WebSocketServerFactory):
log = txaio.make_logger()
if USE_STREAMING_TESTEE:
protocol = StreamingTesteeServerProtocol
else:
protocol = TesteeServerProtocol
def __init__(self, url):
testee_ident = autobahn.asyncio.__ident__
self.log.info("Testee identification: {testee_ident}", testee_ident=testee_ident)
WebSocketServerFactory.__init__(self, url, server=testee_ident)
self.setProtocolOptions(failByDrop=False) # spec conformance
# self.setProtocolOptions(utf8validateIncoming = False)
if USE_STREAMING_TESTEE:
self.setProtocolOptions(failByDrop=True) # needed for streaming mode
else:
# enable permessage-deflate WebSocket protocol extension
def accept(offers):
for offer in offers:
if isinstance(offer, PerMessageDeflateOffer):
return PerMessageDeflateOfferAccept(offer)
self.setProtocolOptions(perMessageCompressionAccept=accept)
if __name__ == '__main__':
txaio.start_logging(level='info')
factory = TesteeServerFactory(u"ws://127.0.0.1:9001")
loop = asyncio.get_event_loop()
coro = loop.create_server(factory, port=9001)
server = loop.run_until_complete(coro)
try:
loop.run_forever()
except KeyboardInterrupt:
pass
finally:
server.close()
loop.close()
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