[asterisk-bugs] [Asterisk 0016250]: UDPTL asked to send 77 bytes of IFP when far end only prepared to accept 45 bytes; data loss may occur.

[Asterisk Bug Tracker]

The following issue has been SUBMITTED. 
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https://issues.asterisk.org/view.php?id=16250 
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Reported By:                Alex Oniciuc
Assigned To:                kpfleming
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Project:                    Asterisk
Issue ID:                   16250
Category:                   Channels/chan_sip/T.38
Reproducibility:            always
Severity:                   minor
Priority:                   normal
Status:                     assigned
Asterisk Version:           1.6.1.9 
JIRA:                        
Regression:                 No 
Reviewboard Link:            
SVN Branch (only for SVN checkouts, not tarball releases): N/A 
SVN Revision (number only!):  
Request Review:              
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Date Submitted:             2009-11-16 03:31 CST
Last Modified:              2009-11-16 03:31 CST
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Summary:                    UDPTL asked to send 77 bytes of IFP when far end
only prepared to accept 45 bytes; data loss may occur.
Description: 
I'm using Asterisk's fax passthrough functionality to send faxes from one
t38 enabled Patton to another.

The faxes arrive correctly but the Asterisk logs are full of error
messages like:

[Nov 16 09:35:08] WARNING[3762]: udptl.c:1003 ast_udptl_write: UDPTL asked
to send 77 bytes of IFP when far end only prepared to accept 45 bytes; data
loss may occur.
[Nov 16 09:35:08] ERROR[3762]: udptl.c:292 encode_open_type: Buffer
overflow detected (77 + 239 > 244)
[Nov 16 09:35:08] NOTICE[3762]: udptl.c:1014 ast_udptl_write: UDPTL
Transmission error to XXX.XXX.XXX.XXX:10008: Message too long

or

[Nov 16 09:35:22] WARNING[3762]: udptl.c:1003 ast_udptl_write: UDPTL asked
to send 53 bytes of IFP when far end only prepared to accept 45 bytes; data
loss may occur.

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Issue History 
Date Modified    Username       Field                    Change               
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2009-11-16 03:31 Alex Oniciuc   New Issue                                    
2009-11-16 03:31 Alex Oniciuc   Status                   new => assigned     
2009-11-16 03:31 Alex Oniciuc   Assigned To               => kpfleming       
2009-11-16 03:31 Alex Oniciuc   Asterisk Version          => 1.6.1.9         
2009-11-16 03:31 Alex Oniciuc   Regression                => No              
2009-11-16 03:31 Alex Oniciuc   SVN Branch (only for SVN checkouts, not tarball
releases) => N/A             
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