MRCP client crash due to Access violation exception at libsofia_sip_ua

[mena...@gmail.com]

Hi,

MRCP client has crashed due to 'Access violation' exception on running calls for hours. The crash dump is pointing to  libsofia_sip_ua!nua_get_params .

Any thoughts around this exception would be helpful. 

Currently we are running on Nuance 11.0.6 and  the version of  libsofia_sip_ua  is 1.12.11.0. 

Below is the crash dump- 

#  7  Id: 7ac.a28 Suspend: 1 Teb: 000000f3`9e00a000 Unfrozen

 # Child-SP          RetAddr           : Args to Child                                                           : Call Site

00 000000f3`9edfcbd0 00007ff8`bb9336cf : 00000000`00000001 00000239`00001300 00007ff8`b12a16ab 000000f3`0000006f : KERNELBASE!FormatMessageW+0x8b

01 000000f3`9edfccd0 00007ff8`b11dbac4 : 00000000`0000006f 00000000`00000000 00000000`0000006f 00000239`00000400 : KERNELBASE!FormatMessageA+0xcf

02 000000f3`9edfcd70 00007ff8`b11db741 : 00000239`6c04ced0 00000000`00000000 000000f3`9edfcfd8 00000239`6b932a48 : libsofia_sip_ua!nua_get_params+0x85a3

03 000000f3`9edfced0 00007ff8`b129852e : 00000000`00000000 00000000`00000000 00000239`6b932d40 00007ff8`b1280000 : libsofia_sip_ua!nua_get_params+0x8220

04 000000f3`9edfcf40 00007ff8`b1298f93 : 00000000`7856dbea 000000f3`9edfd148 00000239`6b932d40 000000f3`9edfd700 : libsofia_sip_ua!nua_get_params+0xc500d

05 000000f3`9edfd0b0 00007ff8`b129b325 : 000000f3`9edfd1e0 000000f3`9edfd700 00000239`6b932d40 00000239`6b932d40 : libsofia_sip_ua!nua_get_params+0xc5a72

06 000000f3`9edfd0f0 00007ff8`b129a7c4 : 0000d596`22fe68e5 00007ff8`b11f8815 00000239`4fd83960 00000239`6b932d40 : libsofia_sip_ua!nua_get_params+0xc7e04

07 000000f3`9edff380 00007ff8`b124a27b : 00000239`4fd83960 00000000`00000000 00000239`4f66706b 00000239`4f666fb0 : libsofia_sip_ua!nua_get_params+0xc72a3

08 000000f3`9edff3b0 00007ff8`b1257294 : 00000239`6ba41400 00000239`6b964350 00000239`4fd83960 00000239`6b964458 : libsofia_sip_ua!nua_get_params+0x76d5a

[mena...@gmail.com]

Hi All,

Anybody has thoughts around the 'Access violation' exception caused by libsofia_sip_ua.dll...?

Any inputs to resolve this issue would be very helpful.

Thanks in advance.

[Arsen Chaloyan]

Hi Menaka,

The provided context does not tell me much. The more details you provide, the better. What version of the MRCP client do you use? What is the IVR platform? Which OS? Any details regarding the scenario?

Also what does it mean "We are running on Nuance 11.0.6". Do you imply that the MRCP client and server are running on the same host?

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Arsen Chaloyan
Author of UniMRCP
http://www.unimrcp.org

[mena...@gmail.com]

Hello Arsen,

Ours is Voice Mail solution application. We have implemented UniMRCP client service (using UniMRCP client headers and libraries of version 1.13) and able to connect with MRCP Server running on Nuance engine (11.0.6). Both UniMRCP client and server are running on the same host which is Windows 2016 OS. 

On this Windows platform, we are performing load test to check system stability. After running the speech recognition calls for few hours (with each call we are sending 3 utterances to UniMRCP server for recognition) , our UniMRCP client service crashes. On analyzing the dump file, we see that crash is due to access violation exception and default module is libsofia_sip_ua.dll (as provided in the stack trace of dump file)

Could you please provide some inputs to resolve this issue.

Thanks 

Menaka

[Arsen Chaloyan]

Hello Menaka,

I am inclined to believe that the access violation is caused by a misuse of the client API in your application. But of course I cannot make any definite statement as this sort of issue needs to be investigated much more thoroughly. Also, I am not sure I understood your topology right. You seem to mention that UniMRCP client is used with Nuance, but then how UniMRCP server comes into the picture...

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