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Work around TLS bug in twisted
Wrap up twisted's FileBodyProducer to work around https://twistedmatrix.com/trac/ticket/8473. Hopefully this fixes https://matrix.org/jira/browse/SYN-700.
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1 changed files with 26 additions and 2 deletions
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@ -24,12 +24,13 @@ from synapse.http.endpoint import SpiderEndpoint
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from canonicaljson import encode_canonical_json
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from twisted.internet import defer, reactor, ssl, protocol
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from twisted.internet import defer, reactor, ssl, protocol, task
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from twisted.internet.endpoints import SSL4ClientEndpoint, TCP4ClientEndpoint
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from twisted.web.client import (
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BrowserLikeRedirectAgent, ContentDecoderAgent, GzipDecoder, Agent,
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readBody, FileBodyProducer, PartialDownloadError,
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readBody, PartialDownloadError,
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)
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from twisted.web.client import FileBodyProducer as TwistedFileBodyProducer
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from twisted.web.http import PotentialDataLoss
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from twisted.web.http_headers import Headers
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from twisted.web._newclient import ResponseDone
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@ -468,3 +469,26 @@ class InsecureInterceptableContextFactory(ssl.ContextFactory):
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def creatorForNetloc(self, hostname, port):
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return self
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class FileBodyProducer(TwistedFileBodyProducer):
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"""Workaround for https://twistedmatrix.com/trac/ticket/8473
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We override the pauseProducing and resumeProducing methods in twisted's
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FileBodyProducer so that they do not raise exceptions if the task has
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already completed.
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"""
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def pauseProducing(self):
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try:
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super(FileBodyProducer, self).pauseProducing()
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except task.TaskDone:
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# task has already completed
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pass
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def resumeProducing(self):
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try:
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super(FileBodyProducer, self).resumeProducing()
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except task.NotPaused:
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# task was not paused (probably because it had already completed)
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pass
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