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https://issues.apache.org/jira/browse/PROTON-1055?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15016704#comment-15016704
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Robbie Gemmell commented on PROTON-1055:
----------------------------------------

It seems like a separate issue (and possibly specific to Messenger, rather than 
the core engine like this one is) so I'd raise a new JIRA.

If you are using just starting out I'd also suggest giving the newer reactive 
API bits a look instead might be worthwhile, since they have more developer 
attention on them these days than Messenger.

> Username sent twice during SASL AUTH
> ------------------------------------
>
>                 Key: PROTON-1055
>                 URL: https://issues.apache.org/jira/browse/PROTON-1055
>             Project: Qpid Proton
>          Issue Type: Bug
>          Components: proton-c, python-binding
>    Affects Versions: 0.10
>         Environment: # lsb_release -a
> No LSB modules are available.
> Distributor ID: Ubuntu
> Description:    Ubuntu 14.04.3 LTS
> Release:        14.04
> Codename:       trusty
> # uname -a
> Linux esb-test-mq01 3.13.0-67-generic #110-Ubuntu SMP Fri Oct 23 13:24:41 UTC 
> 2015 x86_64 x86_64 x86_64 GNU/Linux
> # python --version
> Python 2.7.6
>            Reporter: Simon Lundstrom
>            Priority: Blocker
>
> In versions >0.9.1.1 (We've tried 0.10 and 0.11.0) the username is sent twice 
> during SASL authentication.
> Working in 0.9.1.1:
> {code}
> # PN_TRACE_FRM=1 ./meow.py
> [0x250d3b0]:  -> SASL
> [0x250d3b0]:0 -> @sasl-init(65) [mechanism=:PLAIN, 
> initial-response=b"\x00the_username\x00the_password"]
> [0x250d3b0]:  <- SASL
> [0x250d3b0]:0 <- @sasl-mechanisms(64) 
> [sasl-server-mechanisms=@PN_SYMBOL[:PLAIN, :ANONYMOUS]]
> [0x250d3b0]:0 <- @sasl-outcome(68) [code=0]
> [0x250d3b0]:  -> AMQP
> [0x250d3b0]:0 -> @open(16) 
> [container-id="6b1fecb6-358e-48af-b461-bae3563a7c7f", hostname="esb-test"]
> [0x250d3b0]:0 -> @begin(17) [next-outgoing-id=0, incoming-window=2147483647, 
> outgoing-window=1]
> [0x250d3b0]:0 -> @attach(18) [name="sender-xxx", handle=0, role=false, 
> snd-settle-mode=2, rcv-settle-mode=0, source=@source(40) 
> [address="TEST-queue", durable=0, timeout=0, dynamic=false], 
> target=@target(41) [address="TEST-queue", durable=0, timeout=0, 
> dynamic=false], initial-delivery-count=0]
> [0x250d3b0]:  <- AMQP
> [0x250d3b0]:0 <- @open(16) [container-id="", hostname="", 
> max-frame-size=4294967295, channel-max=32767, idle-time-out=15000, 
> offered-capabilities=@PN_SYMBOL[:"ANONYMOUS-RELAY"], 
> properties={:product="ActiveMQ", :"topic-prefix"="topic://", 
> :"queue-prefix"="queue://", :version="5.12.1", :platform="Java/1.8.0_45"}]
> [0x250d3b0]:0 <- @begin(17) [remote-channel=0, next-outgoing-id=1, 
> incoming-window=0, outgoing-window=0, handle-max=65535]
> [0x250d3b0]:0 <- @flow(19) [next-incoming-id=0, incoming-window=2147483647, 
> next-outgoing-id=1, outgoing-window=0]
> [0x250d3b0]:0 <- @attach(18) [name="sender-xxx", handle=0, role=true, 
> snd-settle-mode=2, rcv-settle-mode=0, source=@source(40) 
> [address="TEST-queue"], target=@target(41) [address="TEST-queue"]]
> [0x250d3b0]:0 <- @flow(19) [next-incoming-id=0, incoming-window=2147483647, 
> next-outgoing-id=1, outgoing-window=0, handle=0, delivery-count=0, 
> link-credit=1000]
> [0x250d3b0]:0 -> @transfer(20) [handle=0, delivery-id=0, 
> delivery-tag=b"\x00\x00\x00\x00\x00\x00\x00\x00", message-format=0, 
> settled=true, more=false] (131) "\x00[…]"
> #
> {code}
> Not working in >0.9.1.1:
> {code}
> # PN_TRACE_FRM=1 ./meow.py
> [0x18aa060]:  -> SASL
> [0x18aa060]:  <- SASL
> [0x18aa060]:0 <- @sasl-mechanisms(64) 
> [sasl-server-mechanisms=@PN_SYMBOL[:PLAIN, :ANONYMOUS]]
> [0x18aa060]:0 -> @sasl-init(65) [mechanism=:PLAIN, 
> initial-response=b"the_username\x00the_username\x00the_password"]
> [0x18aa060]:0 <- @sasl-outcome(68) [code=1]
> [0x18aa060]:  -> EOS
> #
> {code}
> When using >0.9.1.1 and using SSL it does the same BUT then just hangs. 
> Should we open a seperate Jira for this?:
> {code}
> # PN_TRACE_FRM=1 time ./meow.py
> [0xa5d060]:  -> SASL
> [0xa5d060]:  <- SASL
> [0xa5d060]:0 <- @sasl-mechanisms(64) 
> [sasl-server-mechanisms=@PN_SYMBOL[:PLAIN, :ANONYMOUS]]
> [0xa5d060]:0 -> @sasl-init(65) [mechanism=:PLAIN, 
> initial-response=b"the_username\x00the_username\x00the_password"]
> [0xa5d060]:0 <- @sasl-outcome(68) [code=1]
> ^CTraceback (most recent call last):
>   File "./meow.py", line 12, in <module>
>     messenger.send()
>   File "/usr/local/lib/python2.7/dist-packages/proton/__init__.py", line 568, 
> in send
>     self._check(pn_messenger_send(self._mng, n))
> KeyboardInterrupt
> Command exited with non-zero status 1
> 0.08user 0.02system 0:50.69elapsed 0%CPU (0avgtext+0avgdata 12192maxresident)k
> 0inputs+0outputs (0major+5474minor)pagefaults 0swaps
> #
> {code}



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