[asterisk-bugs] [Asterisk 0014400]: ami fails on high load

[Asterisk Bug Tracker]

The following issue has been SUBMITTED. 
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http://bugs.digium.com/view.php?id=14400 
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Reported By:                fnordian
Assigned To:                
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Project:                    Asterisk
Issue ID:                   14400
Category:                   Core/ManagerInterface
Reproducibility:            always
Severity:                   minor
Priority:                   normal
Status:                     new
Asterisk Version:           SVN 
Regression:                 No 
SVN Branch (only for SVN checkouts, not tarball releases): 1.6.1 
SVN Revision (number only!): 169213 
Request Review:              
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Date Submitted:             2009-02-04 06:53 CST
Last Modified:              2009-02-04 06:53 CST
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Summary:                    ami fails on high load
Description: 
hi,
the asterisk manager interface stops working and closes the session on
high load (on the interface). i traced the issue down to a strange behavior
of fwrite: although ast_wait_for_output (poll) says write would be
possible, the fwrite just returns 0 and errno is set to ESPIPE. the
tcp-connection is still established on both sides. 

i was able to fix the issue by disabling output-buffering for the
file-handle using setvbuf, although i do not understand the issue
completly.

it would be great if someone could look into this.
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Issue History 
Date Modified    Username       Field                    Change               
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2009-02-04 06:53 fnordian       New Issue                                    
2009-02-04 06:53 fnordian       Asterisk Version          => SVN             
2009-02-04 06:53 fnordian       Regression                => No              
2009-02-04 06:53 fnordian       SVN Branch (only for SVN checkouts, not tarball
releases) => 1.6.1           
2009-02-04 06:53 fnordian       SVN Revision (number only!) => 169213          
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