2:05 p.m.
http://bugzilla.moblin.org/show_bug.cgi?id=7981
Summary: SyncML toolkit reports '0x2002' error code when doing
synchronization
Classification: Moblin Projects
Product: SyncEvolution
Version: upstream
Platform: Netbook
OS/Version: Moblin Linux
Status: NEW
Severity: normal
Priority: Undecided
Component: SyncML
AssignedTo: syncevolution(a)lists.intel.com
ReportedBy: yongsheng.zhu(a)intel.com
QAContact: yanshuang.zheng(a)intel.com
CC: shuang.wan(a)intel.com, syncevolution(a)lists.intel.com
scheduleworld_1 is a configured server created by client-test. If you sync it
with 'syncevolution --run scheduleworld_1'. Then the syncML toolkit of
libsynthesis reports '0x2002' error code and sync is done with errors.
The error code means 'Buffer too small' according to error code definition in
syncML toolkit. so it might be a potential issue in syncML toolkit.
Here is the list of my sources in sheduleworld_1:
file_ical20 file_itodo20 file_vcard21 file_vcard30 ical20 itodo20 text
vcard21 vcard30
I tried that when the number of sources is larger than 5, the error occurs.
Also for other servers, like memotoo_1, if the number is large than 4, then the
error occurs.
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7:47 p.m.
New subject: [Bug 7981] SyncML toolkit reports '0x2002' error code when doing synchronization
http://bugzilla.moblin.org/show_bug.cgi?id=7981
Chen Congwu <congwu.chen(a)intel.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |congwu.chen(a)intel.com
--- Comment #1 from Chen Congwu <congwu.chen(a)intel.com> 2009-11-13 00:47:40 PST
---
I think this is controlled by <maxmsgsize>131072</maxmsgsize>
(In reply to comment #0)
scheduleworld_1 is a configured server created by client-test. If you
sync it
with 'syncevolution --run scheduleworld_1'. Then the syncML toolkit of
libsynthesis reports '0x2002' error code and sync is done with errors.
The error code means 'Buffer too small' according to error code definition in
syncML toolkit. so it might be a potential issue in syncML toolkit.
Here is the list of my sources in sheduleworld_1:
file_ical20 file_itodo20 file_vcard21 file_vcard30 ical20 itodo20 text
vcard21 vcard30
I tried that when the number of sources is larger than 5, the error occurs.
Also for other servers, like memotoo_1, if the number is large than 4, then the
error occurs.
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9:58 p.m.
New subject: [Bug 7981] SyncML toolkit reports '0x2002' error code when doing synchronization
http://bugzilla.moblin.org/show_bug.cgi?id=7981
pohly <patrick.ohly(a)intel.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |patrick.ohly(a)intel.com
--- Comment #2 from pohly <patrick.ohly(a)intel.com> 2009-11-13 02:58:16 PST ---
Is our own DevInf perhaps becoming so large that it doesn't fit into the
outgoing message?
The simples solution would be to make the message size limit larger, but then
it's still a fixed limit. No idea whether large object support (which splits
objects into chunks and distributes them among messages) can be applied to
DevInf. I suspect that even if the standard supports it, peer implementations
won't work with it.
Note that the problem only occurs in an invalid local configuration: it is not
possible to synchronize, say, ical20 and file_ical20 against the server at once
because they share the same database on the server. Hmm, is that really true?
I'm not so sure anymore. The server could handle this.
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12:38 p.m.
New subject: [Bug 7981] SyncML toolkit reports '0x2002' error code when doing synchronization
http://bugzilla.moblin.org/show_bug.cgi?id=7981
--- Comment #3 from yongsheng zhu <yongsheng.zhu(a)intel.com> 2009-11-15 17:37:58 PST
---
(In reply to comment #1)
I think this is controlled by
<maxmsgsize>131072</maxmsgsize>
I change this field with a big
number(20000000) but it still fails.
(In reply to comment #2)
Is our own DevInf perhaps becoming so large that it doesn't fit
into the
outgoing message?
I only keep 5 sources:file_ical20 file_itodo20 file_vcard21
file_vcard30
itodo20. It still failes. But not all 5 sources could reproduce this issue.
Still from the incomplete XML file, the devinf has been generated successfully.
The simples solution would be to make the message size limit larger,
but then
it's still a fixed limit. No idea whether large object support (which splits
objects into chunks and distributes them among messages) can be applied to
DevInf. I suspect that even if the standard supports it, peer implementations
won't work with it.
That doesn't work for this problem.
Note that the problem only occurs in an invalid local configuration:
it is not
possible to synchronize, say, ical20 and file_ical20 against the server at once
because they share the same database on the server. Hmm, is that really true?
I'm not so sure anymore. The server could handle this.
They could not be synced
at the same time. Synthesis checks source 'uri' and
disable other same ones.
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8:01 p.m.
New subject: [Bug 7981] SyncML toolkit reports '0x2002' error code when doing synchronization
http://bugzilla.moblin.org/show_bug.cgi?id=7981
--- Comment #4 from pohly <patrick.ohly(a)intel.com> 2009-11-16 01:01:26 PST ---
(In reply to comment #3)
(In reply to comment #1)
> I think this is controlled by <maxmsgsize>131072</maxmsgsize>
I change this field with a big number(20000000) but it still fails.
Was it properly conveyed to the SyncML Toolkit? In other words, did the
Synthesis XML configuration contain the setting (it should, but I don't
remember where) and was it passed to the SyncML Toolkit (again, I don't know
how)?
(In reply to comment #2)
> Is our own DevInf perhaps becoming so large that it doesn't fit into the
> outgoing message?
I only keep 5 sources:file_ical20 file_itodo20 file_vcard21 file_vcard30
itodo20. It still failes. But not all 5 sources could reproduce this issue.
Still from the incomplete XML file, the devinf has been generated successfully.
Can you figure out where the error is raised and for which message? A complete
stack back trace should then point towards the code in libsynthesis where it
tries to add something to a full message.
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8:32 p.m.
New subject: [Bug 7981] SyncML toolkit reports '0x2002' error code when doing synchronization
http://bugzilla.moblin.org/show_bug.cgi?id=7981
--- Comment #5 from yongsheng zhu <yongsheng.zhu(a)intel.com> 2009-11-16 01:32:19 PST
---
(In reply to comment #4)
(In reply to comment #3)
> (In reply to comment #1)
> > I think this is controlled by <maxmsgsize>131072</maxmsgsize>
> I change this field with a big number(20000000) but it still fails.
Was it properly conveyed to the SyncML Toolkit? In other words, did the
Synthesis XML configuration contain the setting (it should, but I don't
remember where) and was it passed to the SyncML Toolkit (again, I don't know
how)?
Yes, I change the element 'maxmsgsize' in the
syncclient_sample_config.xml.
Also I see my changes in the outgoing messages.
> (In reply to comment #2)
> > Is our own DevInf perhaps becoming so large that it doesn't fit into the
> > outgoing message?
> I only keep 5 sources:file_ical20 file_itodo20 file_vcard21 file_vcard30
> itodo20. It still failes. But not all 5 sources could reproduce this issue.
> Still from the incomplete XML file, the devinf has been generated successfully.
Can you figure out where the error is raised and for which message? A complete
stack back trace should then point towards the code in libsynthesis where it
tries to add something to a full message.
Yes, I would have a deep look tomorrow.
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1:35 a.m.
New subject: [Bug 7981] SyncML toolkit reports '0x2002' error code when doing synchronization
http://bugzilla.moblin.org/show_bug.cgi?id=7981
--- Comment #6 from pohly <patrick.ohly(a)intel.com> 2009-11-19 06:35:53 PST ---
(In reply to comment #5)
(In reply to comment #4)
> (In reply to comment #3)
> > (In reply to comment #1)
> > > I think this is controlled by <maxmsgsize>131072</maxmsgsize>
> > I change this field with a big number(20000000) but it still fails.
>
> Was it properly conveyed to the SyncML Toolkit? In other words, did the
> Synthesis XML configuration contain the setting (it should, but I don't
> remember where) and was it passed to the SyncML Toolkit (again, I don't know
> how)?
Yes, I change the element 'maxmsgsize' in the syncclient_sample_config.xml.
Also I see my changes in the outgoing messages.
We have a maxMsgSize sync property. Editing the XML directly shouldn't be
necessary.
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9:31 p.m.
New subject: [Bug 7981] SyncML toolkit reports '0x2002' error code when doing synchronization
http://bugzilla.moblin.org/show_bug.cgi?id=7981
--- Comment #7 from yongsheng zhu <yongsheng.zhu(a)intel.com> 2009-11-25 02:31:55 PST
---
Investigation result shows me that it is actually 'buffer too small'. The size
of buffer used for encoding subdtd of WBXML/XML currently is directly set as
'12000' bytes, which doesn't fully meet the requirement when sources are too
many. I doubled the size, this case is successfully passed.
I wonder why this could be successful before 0.9.x. I don't find any changes
related to this kind of error. Should continue to investigate.
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9:39 p.m.
New subject: [Bug 7981] SyncML toolkit reports '0x2002' error code when doing synchronization
http://bugzilla.moblin.org/show_bug.cgi?id=7981
--- Comment #8 from yongsheng zhu <yongsheng.zhu(a)intel.com> 2009-11-25 02:38:59 PST
---
(In reply to comment #7)
Investigation result shows me that it is actually 'buffer too
small'. The size
of buffer used for encoding subdtd of WBXML/XML currently is directly set as
'12000' bytes, which doesn't fully meet the requirement when sources are too
many. I doubled the size, this case is successfully passed.
I wonder why this could be successful before 0.9.x. I don't find any changes
related to this kind of error. Should continue to investigate.
I use the branches
'origin/syncevolution-0-9-x' for syncevolution and
libsynthesis. This kind of error also exists. Did I use the wrong branches?
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11:54 p.m.
New subject: [Bug 7981] SyncML toolkit reports '0x2002' error code when doing synchronization
http://bugzilla.moblin.org/show_bug.cgi?id=7981
--- Comment #9 from pohly <patrick.ohly(a)intel.com> 2009-11-25 04:54:32 PST ---
(In reply to comment #8)
(In reply to comment #7)
> Investigation result shows me that it is actually 'buffer too small'. The
size
> of buffer used for encoding subdtd of WBXML/XML currently is directly set as
> '12000' bytes, which doesn't fully meet the requirement when sources are
too
> many. I doubled the size, this case is successfully passed.
Patch?
> I wonder why this could be successful before 0.9.x. I don't
find any changes
> related to this kind of error. Should continue to investigate.
I use the branches 'origin/syncevolution-0-9-x' for syncevolution and
libsynthesis. This kind of error also exists. Did I use the wrong branches?
These are the right branches. To be 100% sure that you use the 0.9.1 source
code, download the source .tar.gz from downloads.syncevolution.org and check
with that.
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12:37 p.m.
New subject: [Bug 7981] SyncML toolkit reports '0x2002' error code when doing synchronization
http://bugzilla.moblin.org/show_bug.cgi?id=7981
--- Comment #10 from yongsheng zhu <yongsheng.zhu(a)intel.com> 2009-11-25 17:37:06
PST ---
(In reply to comment #9)
(In reply to comment #8)
> (In reply to comment #7)
> > Investigation result shows me that it is actually 'buffer too small'.
The size
> > of buffer used for encoding subdtd of WBXML/XML currently is directly set as
> > '12000' bytes, which doesn't fully meet the requirement when
sources are too
> > many. I doubled the size, this case is successfully passed.
Patch?
This error only occurs:
1) many sources are enabled(in my case, the number is 5)
2) they should not share the same remote uri, otherwise synthesis only picks up
one of sources with the same uri
The reason is: when encoding device information, a specified-size buffer is
given.
however, if many sources, datastores in the device information will consume
many bytes to store, this makes buffer overflow. A worse one is that in SyncML
1.2, different datastores doesn't share CTCaps, so the device information need
more memory space while the buffer remains unchanged. This issue should always
exist.
currently doubling the size is enough for we only support a specified number of
data formats.
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1:48 p.m.
New subject: [Bug 7981] SyncML toolkit reports '0x2002' error code when doing synchronization
http://bugzilla.moblin.org/show_bug.cgi?id=7981
--- Comment #11 from yongsheng zhu <yongsheng.zhu(a)intel.com> 2009-11-25 18:48:44
PST ---
the patch is on the branch 'mb7981'
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3:10 a.m.
New subject: [Bug 7981] SyncML toolkit reports '0x2002' error code when doing synchronization
http://bugzilla.moblin.org/show_bug.cgi?id=7981
pohly <patrick.ohly(a)intel.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution| |FIXED
--- Comment #12 from pohly <patrick.ohly(a)intel.com> 2009-11-27 08:10:42 PST ---
(In reply to comment #11)
the patch is on the branch 'mb7981'
This doesn't warrant backporting to SyncEvolution 0.9.2, so I only merged it
into "master", for SyncEvolution 1.0.
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6:44 p.m.
New subject: [Bug 7981] SyncML toolkit reports '0x2002' error code when doing synchronization
http://bugzilla.moblin.org/show_bug.cgi?id=7981
ZhangJingke <jingke.zhang(a)intel.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |VERIFIED
CC| |jingke.zhang(a)intel.com
--- Comment #13 from ZhangJingke <jingke.zhang(a)intel.com> 2010-02-09 23:44:47 PST
---
Confirmed with Yongsheng, mark this issue as verified. Last syncevolution
package is 0.9.99.6.
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