[BusyBox 0001079]: telnetd quits on SIGPIPE

[bugs at busybox.net]

The following issue requires your FEEDBACK. 
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http://busybox.net/bugs/view.php?id=1079 
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Reported By:                jmunsin
Assigned To:                BusyBox
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Project:                    BusyBox
Issue ID:                   1079
Category:                   Networking Support
Reproducibility:            random
Severity:                   crash
Priority:                   normal
Status:                     feedback
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Date Submitted:             11-01-2006 01:42 PST
Last Modified:              11-22-2006 13:12 PST
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Summary:                    telnetd quits on SIGPIPE
Description: 
The line

w = write(ts->sockfd, ts->buf2 + ts->wridx2, maxlen);

in telnetd.c may cause a SIGPIPE. The default handler for
SIGPIPE is to terminate => telnetd quits. This is wrong,
at least if you are using telnetd in stand alone mode.

Reproducing this is a bit tricky (timing/load dependant?),
but my scripts can reproduce it after connecting 200-300 times.

A quick fix is to run signal(SIGPIPE, SIG_IGN);, but perhaps there
is a better way to handle this.
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---------------------------------------------------------------------- 
 vda - 11-22-06 13:12  
---------------------------------------------------------------------- 
Added signal(SIGPIPE, SIG_IGN) among many other changes (standalone+inetd
support, fixed IPv6 and IPv6+IPv4 support). Can you test current svn
version? 

Issue History 
Date Modified   Username       Field                    Change               
====================================================================== 
11-01-06 01:42  jmunsin        New Issue                                    
11-01-06 01:42  jmunsin        Status                   new => assigned     
11-01-06 01:42  jmunsin        Assigned To               => BusyBox         
11-22-06 13:12  vda            Note Added: 0001768                          
11-22-06 13:12  vda            Status                   assigned => feedback
======================================================================