Re: A mystery about calling a program from CGIDEV2

[Scott Klement <web400@xxxxxxxxxxxxxxxx>]

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.