[Bug libc/1936] New: Improvement to rcmd

[Bug libc/1936] New: Improvement to rcmd

[jw203198 at hotmail dot com]

The existing code in libc which implements rcmd isn't very robust when it comes
to executing multiple rcmd's in fairly rapid sequence.  That is because rcmd
attempts to bind to the same port number every time (ie it tries all port
numbers in same order every time). This can cause high delays, and errors, if
the port number is in use.

My patch slightly randomizes the starting port number in a possibly reasonable
fashion using process id. It works, and improves reliability of rcmd.

I am sick of recompiling glibc every new release just to change a couple of
lines of code, so maybe you might incorporate this change.

-- 
           Summary: Improvement to rcmd
           Product: glibc
           Version: 2.3.5
            Status: NEW
          Severity: normal
          Priority: P2
         Component: libc
        AssignedTo: drepper at redhat dot com
        ReportedBy: jw203198 at hotmail dot com
                CC: glibc-bugs at sources dot redhat dot com


http://sourceware.org/bugzilla/show_bug.cgi?id=1936

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[Bug libc/1936] Improvement to rcmd

[jw203198 at hotmail dot com]

------- Additional Comments From jw203198 at hotmail dot com  2005-11-28 11:00 -------
Created an attachment (id=768)
 --> (http://sourceware.org/bugzilla/attachment.cgi?id=768&action=view)
Patch to randomize initial rcmd port by process id.

Please ignore the waffling comments in the patch. Just me thinking with my two
typing fingers.


-- 


http://sourceware.org/bugzilla/show_bug.cgi?id=1936

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