From: Mark Probert <probertm@...>
Date: 2004-11-23T10:48:04+09:00
Subject: Subtle bug: Telnet / socket / thread?

Hi.

I was wondering if anyone has advice on how to debug the following 
problem.  I am using Ruby 1.8.1, establishing telnet sessions whilst in
a thread.  Most of the time, it is fine.  Every now and then, the 
socket.syswrite() in telnet seems to send characters bound for another
socket / thread.  Or so it seems.  

The trouble is that the issue appears to be timing related.  If I turn on
the dump log in Telnet, then the error, and the extra characters on
input, go away (a short term fix).  So, I am not sure on how to isolate
the issue.

The problem is reproducible in the sense that I can get the rubbish output
almost everytime.  Unfortunately, the combination of factors is pretty
complex and the test setup is not easily reproduciable.

Any thoughts?

-mark.