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https://issues.apache.org/jira/browse/PROTON-1555?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Gordon Sim closed PROTON-1555.
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Resolution: Not A Bug
> SASL External and missing initial-response
> ------------------------------------------
>
> Key: PROTON-1555
> URL: https://issues.apache.org/jira/browse/PROTON-1555
> Project: Qpid Proton
> Issue Type: Bug
> Reporter: Ulf Lilleengen
> Assignee: Gordon Sim
> Attachments: sasl-external-reproducer.tar.gz
>
>
> We're facing an issue where the router or proton seems to require the
> initial-response in the sasl-init frame to be set.
> I've attached a reproducer that reproduces the error. It contains a router
> config which you can start the router with. It also contains a qdmanage.sh
> script that shows the exchange when using qdmanage. The router log trace
> looks like this (initial-response is an empty string)
> 2017-08-25 10:17:21.500716 +0200 SERVER (info) Accepted connection to
> 0.0.0.0:55671 from 127.0.0.1:53196
> [0x7fd630042480]: <- SASL
> [0x7fd630042480]: -> SASL
> [0x7fd630042480]:0 -> @sasl-mechanisms(64)
> [sasl-server-mechanisms=@PN_SYMBOL[:EXTERNAL]]
> [0x7fd630042480]:0 <- @sasl-init(65) [mechanism=:EXTERNAL,
> initial-response=b""]
> [0x7fd630042480]:0 -> @sasl-outcome(68) [code=0]
> The error occurs when connecting with a client that doesnt set the
> initial-response at all. The router log:
> 2017-08-25 10:16:59.851029 +0200 SERVER (info) Accepted connection to
> 0.0.0.0:55671 from 127.0.0.1:53192
> [0x7fd630014740]: <- SASL
> [0x7fd630014740]: -> SASL
> [0x7fd630014740]:0 -> @sasl-mechanisms(64)
> [sasl-server-mechanisms=@PN_SYMBOL[:EXTERNAL]]
> [0x7fd630014740]:0 <- @sasl-init(65) [mechanism=:EXTERNAL]
> [0x7fd630014740]:0 -> @sasl-challenge(66) [challenge=b""]
> The rhea client will crash with the following error:
> events.js:160
> throw er; // Unhandled 'error' event
> ^
> TypeError: this.mechanism.step is not a function
>
> at SaslClient.on_sasl_challenge
> (/home/lulf/git/enmasse/enmasse/reproducer/node_modules/rhea/lib/sasl.js:214:35)
>
> at c.dispatch
> (/home/lulf/git/enmasse/enmasse/reproducer/node_modules/rhea/lib/types.js:902:33)
>
> at Transport.read
> (/home/lulf/git/enmasse/enmasse/reproducer/node_modules/rhea/lib/transport.js:95:36)
>
> at SaslClient.read
> (/home/lulf/git/enmasse/enmasse/reproducer/node_modules/rhea/lib/sasl.js:245:31)
>
> at Connection.input
> (/home/lulf/git/enmasse/enmasse/reproducer/node_modules/rhea/lib/connection.js:420:35)
>
> at emitOne (events.js:96:13)
> at TLSSocket.emit (events.js:188:7)
> at readableAddChunk (_stream_readable.js:176:18)
>
> at TLSSocket.Readable.push (_stream_readable.js:134:10)
>
> at TLSWrap.onread (net.js:547:20)
> Rob tells me that the router response is not what you'd expect and that it
> should handle a sasl init without an initial-response.
> If we ExternalClient.prototype.start in rhea sasl.js to return an empty
> string instead of null, the exchange goes well.
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