def handlePLAINTEXTServer(self, header):
"""
Parse a complete HTTP-like Foolscap negotiation request and begin proxying
to a destination selected based on the extract TubID.
"""
# the client sends us a GET message
lines = header.split("\r\n")
if not lines[0].startswith("GET "):
raise BananaError("not right")
command, url, version = lines[0].split()
if not url.startswith("/id/"):
# probably a web browser
raise BananaError("not right")
targetTubID = url[4:]
Message.log(event_type=u"handlePLAINTEXTServer", tub_id=targetTubID)
if targetTubID == "":
# they're asking for an old UnauthenticatedTub. Refuse.
raise NegotiationError("secure Tubs require encryption")
if isSubstring("Upgrade: TLS/1.0\r\n", header):
wantEncrypted = True
else:
wantEncrypted = False
Message.log(event_type=u"handlePLAINTEXTServer", want_encrypted=wantEncrypted)
self._handleTubRequest(header, targetTubID)
def handlePLAINTEXTServer(self, header):
"""
Parse a complete HTTP-like Foolscap negotiation request and begin proxying
to a destination selected based on the extract TubID.
"""
# the client sends us a GET message
lines = header.split("\r\n")
if not lines[0].startswith("GET "):
raise BananaError("not right")
command, url, version = lines[0].split()
if not url.startswith("/id/"):
# probably a web browser
raise BananaError("not right")
targetTubID = url[4:]
Message.log(event_type=u"handlePLAINTEXTServer", tub_id=targetTubID)
if targetTubID == "":
# they're asking for an old UnauthenticatedTub. Refuse.
raise NegotiationError("secure Tubs require encryption")
if isSubstring("Upgrade: TLS/1.0\r\n", header):
wantEncrypted = True
else:
wantEncrypted = False
Message.log(event_type=u"handlePLAINTEXTServer",
want_encrypted=wantEncrypted)
self._handleTubRequest(header, targetTubID)
def checkForFailure(self):
if not self.active:
return
if (self.remainingLocations or
self.pendingConnections or self.pendingNegotiations):
return
if not self.validHints:
self.failureReason = Failure(NoLocationHintsError())
# we have no more options, so the connection attempt will fail. The
# getBrokerForTubRef may have succeeded, however, if the other side
# tried to connect to us at exactly the same time, they were the
# master, they established their connection first (but the final
# decision is still in flight), and they hung up on our connection
# because they felt it was a duplicate. So, if self.failureReason
# indicates a duplicate connection, do not signal a failure here. We
# leave the connection timer in place in case they lied about having
# a duplicate connection ready to go.
if (self.failureReason.check(RemoteNegotiationError) and
isSubstring(self.failureReason.value.args[0],
"Duplicate connection")):
self.log("TubConnector.checkForFailure: connection attempt "
"failed because the other end decided ours was a "
"duplicate connection, so we won't signal the "
"failure here")
return
self.failed()