Alex Rudyy created QPID-7251:
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Summary: [Python Client for AMQP 0-8...0-91] Setting of SASL
mechanism (other then PLAIN) explicitly does not work in python client for AMQP
0-8...0-91
Key: QPID-7251
URL: https://issues.apache.org/jira/browse/QPID-7251
Project: Qpid
Issue Type: Bug
Components: Python Client
Reporter: Alex Rudyy
Before adding the ability to negotiate SASL mechanism (in QPID-6116) the
required mechanism could be specified with parameter 'mechanism' in
Client.start(...). The client still support this parameter but sasl object is
not created and receipt of connection.start results in error as the one below:
{noformat}
Error in handler: connection_start
Traceback (most recent call last):
File "/home/alex/qpid/python/qpid/delegate.py", line 47, in __call__
return handler(channel, frame)
File "/home/alex/qpid/python/qpid/client.py", line 167, in connection_start
self.client.response = self.client.sasl.initialResponse()
AttributeError: 'NoneType' object has no attribute 'initialResponse'
{noformat}
In general, it is not good idea to specify the mechanism explicitly. The client
application should rely on existing negotiation logic. However, the client
should keep backward compatibility and should respect the provided mechanism:
at least it can check whether mechanism is supported by the broker and create
sasl object to drive sasl negotiation if mechanism is supported; otherwise,
thow sasl exception
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