Bug 54634 - iChat/Messages floods gabble with disco requests
Summary: iChat/Messages floods gabble with disco requests
Status: RESOLVED FIXED
Alias: None
Product: Telepathy
Classification: Unclassified
Component: gabble (show other bugs)
Version: unspecified
Hardware: Other All
: medium normal
Assignee: Simon McVittie
QA Contact: Telepathy bugs list
URL: http://cgit.freedesktop.org/~smcv/tel...
Whiteboard:
Keywords: patch
Depends on:
Blocks:
 
Reported: 2012-09-07 10:52 UTC by rhowe
Modified: 2012-10-12 11:25 UTC (History)
1 user (show)

See Also:
i915 platform:
i915 features:


Attachments
gabble debug log from empathy (1.61 MB, text/plain)
2012-09-07 10:52 UTC, rhowe
Details
1/4] Add Google camera-v1 as a first-class caps bundle (6.46 KB, patch)
2012-09-07 14:30 UTC, Simon McVittie
Details | Splinter Review
2/4] Now that camera-v1 has a caps URI, don't treat it as part of video-v1 (1.65 KB, patch)
2012-09-07 14:30 UTC, Simon McVittie
Details | Splinter Review
3/4] Verify that every caps 'ext' we ever advertise can be disco'd without error (2.13 KB, patch)
2012-09-07 14:30 UTC, Simon McVittie
Details | Splinter Review
4/4] Turn off deprecation warnings, this is a stable branch (727 bytes, patch)
2012-09-07 14:30 UTC, Simon McVittie
Details | Splinter Review

Description rhowe 2012-09-07 10:52:45 UTC
Created attachment 66781 [details]
gabble debug log from empathy

iChat appears to not like it when empathy (or is it telepathy or gabble?) response with an error code of 404 and item-not-found to a disco request.

It looks like it just sends the disco request again immediately. And again. And again causing telepathy-gabble to peg a CPU at 100% usage.

In the attached log, I've replaced the jabber server name with jabber.example.org.

dan@ is using Mac OS X Lion and Messages version 6.1 (11D1069)

I am using Empathy 3.4.2.3 from Debian unstable's 3.4.2.3-1+build1 package. Other Telepathy packages are:
$ dpkg -l|grep telepathy
ii  banshee-extension-telepathy                  2.4.0-1                            all          Telepathy extension for Banshee
ii  gir1.2-telepathyglib-0.12                    0.18.2-2                           amd64        GLib Telepathy connection manager library (GObject-Introspection)
ii  gir1.2-telepathylogger-0.2                   0.4.0-1                            amd64        Telepathy logger service - introspection
ii  libfolks-telepathy25                         0.6.9-1+b1                         amd64        Telepathy backend for libfolks
ii  libtelepathy-farstream2:amd64                0.4.0-3                            amd64        Glue library between telepathy and farstream
ii  libtelepathy-glib0:amd64                     0.18.2-2                           amd64        Telepathy framework - GLib library
ii  libtelepathy-logger2:amd64                   0.4.0-1                            amd64        Telepathy logger service - utility library
ii  remmina-plugin-telepathy                     1.0.0-4                            amd64        Telepathy plugin for remmina remote desktop client
ii  telepathy-gabble                             0.16.1-1                           amd64        Jabber/XMPP connection manager
ii  telepathy-haze                               0.6.0-1                            amd64        Telepathy connection manager that uses libpurple
ii  telepathy-idle                               0.1.12-1                           amd64        IRC connection manager for Telepathy
ii  telepathy-logger                             0.4.0-1                            amd64        Telepathy logger service - Daemon
ii  telepathy-mission-control-5                  1:5.12.1-2                         amd64        management daemon for Telepathy real-time communication framework
ii  telepathy-rakia                              0.7.4-1                            amd64        SIP connection manager for the Telepathy framework
ii  telepathy-ring                               2.1.0-1+b1                         amd64        GSM and 3G UMTS Telepathy connection manager
ii  telepathy-salut                              0.8.0-2                            amd64        Link-local XMPP connection manager for the Telepathy framework
Comment 1 Simon McVittie 2012-09-07 11:23:10 UTC
We need to extend caps/trust-thyself.py to disco every caps bundle in our ext attribute, then make it pass again.
Comment 2 Simon McVittie 2012-09-07 14:30:00 UTC
Created attachment 66798 [details] [review]
1/4] Add Google camera-v1 as a first-class caps bundle

This is partly a point of principle - given any caps bundle that we have
ever advertised support for, we should be prepared to define when asked -
but mainly a workaround for the iChat bug mentioned in commit af55ea3d.
If we return an error, it will keep disco'ing us repeatedly in a loop.

This leaves us with the problem of finding out what the bundle contains.
In Google's usage it is only its name that is important (ignoring that
XEP-0115 explicitly makes bundle names opaque), but replying to disco
requests for it requires us to be able to turn it into a set of 0 or
more capability URIs. Because of the Google server bug mentioned in
commit cd0da0a8, we can't just ask a Google client, because they're
all on Google servers, so they can't usefully be disco'd.

We assume here that it behaves like the voice-v1 and video-v1 bundles
in containing exactly one URI, and that that URI corresponds to the
bundle name in the same way.
Comment 3 Simon McVittie 2012-09-07 14:30:23 UTC
Created attachment 66799 [details] [review]
2/4] Now that camera-v1 has a caps URI, don't treat it as  part of video-v1
Comment 4 Simon McVittie 2012-09-07 14:30:42 UTC
Created attachment 66800 [details] [review]
3/4] Verify that every caps 'ext' we ever advertise can be  disco'd without error
Comment 5 Simon McVittie 2012-09-07 14:30:55 UTC
Created attachment 66801 [details] [review]
4/4] Turn off deprecation warnings, this is a stable branch
Comment 6 Simon McVittie 2012-10-12 11:25:14 UTC
Fixed in 0.16.3, 0.17.1. Cross-references: this bug is also Debian #687370, LP: #984132.


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