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  2. WEB400
  3. January 2012

Re: A mystery about calling a program from CGIDEV2

Hi Pete,

The CHKSVR command relies on signal processing to "time-out" the connection attempt.

It's possible that Apache either disables signals in it's CGI jobs, or has them handled in a special way (for example, having the submitting job handle the signals for the child job.) This sounds like it would cause the problems you describe, right?

Rewriting CHKSVR with nonblocking sockets (instead of signals) would solve this problem.

-SK



On 1/25/2012 12:14 PM, Pete Helgren wrote:
I have a program in CGIDEV2 that uses the CHKSVR command that Scott
Klement put together a few years ago. There is really nothing special
about the command, it check checks to see if a server is listening on a
certain IP and port. I actually had written an RPG ILE program
originally that did something very similar and it failed the same way
that the CHKSVR program is now failing but ONLY when called from the
CGIDEV2 program running on Apache.

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