130 lines
4.5 KiB
Python
130 lines
4.5 KiB
Python
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###############################################################################
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#
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# The MIT License (MIT)
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#
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# Copyright (c) Crossbar.io Technologies 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.websocket.compress_base import \
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PerMessageCompressOffer, \
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PerMessageCompressOfferAccept, \
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PerMessageCompressResponse, \
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PerMessageCompressResponseAccept, \
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PerMessageCompress
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from autobahn.websocket.compress_deflate import \
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PerMessageDeflateMixin, \
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PerMessageDeflateOffer, \
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PerMessageDeflateOfferAccept, \
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PerMessageDeflateResponse, \
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PerMessageDeflateResponseAccept, \
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PerMessageDeflate
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# this must be a list (not tuple), since we dynamically
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# extend it ..
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__all__ = [
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'PerMessageCompressOffer',
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'PerMessageCompressOfferAccept',
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'PerMessageCompressResponse',
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'PerMessageCompressResponseAccept',
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'PerMessageCompress',
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'PerMessageDeflateOffer',
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'PerMessageDeflateOfferAccept',
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'PerMessageDeflateResponse',
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'PerMessageDeflateResponseAccept',
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'PerMessageDeflate',
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'PERMESSAGE_COMPRESSION_EXTENSION'
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]
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# map of available compression extensions
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PERMESSAGE_COMPRESSION_EXTENSION = {
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# class for 'permessage-deflate' is always available
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PerMessageDeflateMixin.EXTENSION_NAME: {
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'Offer': PerMessageDeflateOffer,
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'OfferAccept': PerMessageDeflateOfferAccept,
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'Response': PerMessageDeflateResponse,
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'ResponseAccept': PerMessageDeflateResponseAccept,
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'PMCE': PerMessageDeflate
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}
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}
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# include 'permessage-bzip2' classes if bzip2 is available
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try:
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import bz2
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except ImportError:
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bz2 = None
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else:
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from autobahn.websocket.compress_bzip2 import \
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PerMessageBzip2Mixin, \
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PerMessageBzip2Offer, \
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PerMessageBzip2OfferAccept, \
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PerMessageBzip2Response, \
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PerMessageBzip2ResponseAccept, \
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PerMessageBzip2
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PMCE = {
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'Offer': PerMessageBzip2Offer,
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'OfferAccept': PerMessageBzip2OfferAccept,
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'Response': PerMessageBzip2Response,
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'ResponseAccept': PerMessageBzip2ResponseAccept,
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'PMCE': PerMessageBzip2
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}
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PERMESSAGE_COMPRESSION_EXTENSION[PerMessageBzip2Mixin.EXTENSION_NAME] = PMCE
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__all__.extend(['PerMessageBzip2Offer',
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'PerMessageBzip2OfferAccept',
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'PerMessageBzip2Response',
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'PerMessageBzip2ResponseAccept',
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'PerMessageBzip2'])
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# include 'permessage-snappy' classes if Snappy is available
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try:
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# noinspection PyPackageRequirements
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import snappy
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except ImportError:
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snappy = None
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else:
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from autobahn.websocket.compress_snappy import \
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PerMessageSnappyMixin, \
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PerMessageSnappyOffer, \
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PerMessageSnappyOfferAccept, \
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PerMessageSnappyResponse, \
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PerMessageSnappyResponseAccept, \
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PerMessageSnappy
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PMCE = {
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'Offer': PerMessageSnappyOffer,
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'OfferAccept': PerMessageSnappyOfferAccept,
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'Response': PerMessageSnappyResponse,
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'ResponseAccept': PerMessageSnappyResponseAccept,
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'PMCE': PerMessageSnappy
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}
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PERMESSAGE_COMPRESSION_EXTENSION[PerMessageSnappyMixin.EXTENSION_NAME] = PMCE
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__all__.extend(['PerMessageSnappyOffer',
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'PerMessageSnappyOfferAccept',
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'PerMessageSnappyResponse',
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'PerMessageSnappyResponseAccept',
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'PerMessageSnappy'])
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