Re: RPG400-L Digest, Vol 5, Issue 1365

Scott,

Thanks.  I'll check out the articles.  What bothers me is this logic has 
worked for the past couple of years.  Just recently did the problem start. 
 

Mark

 



message: 3
date: Tue, 12 Dec 2006 12:41:57 -0600 (CST)
from: Scott Klement <rpg400-l@xxxxxxxxxxxxxxxx>
subject: Re: Socket Server Error - Give Descriptor Error

GiveDescriptor(): The value specified for the argument is not correct.

The following is quoted from the Information Center page for the 
givedescriptor() API:

   This error code indicates one of the following:
     * The target_job parameter points to data that is not valid.
     * The target_job parameter refers to a job that is not active.

I have this same process running on two systems.  It works fine on one
system but the listener job will end once or twice a day on the other
system.

Consider using the spawn() API instead of the icky givedescriptor() API. 
Or use inetd and eliminate the bind/listen/accept logic entirely.


The following articles describe these techniques.  Both articles do 
require a membership in the System iNetwork to read, but a free 
("Associate") membership is sufficient:

TCP/IP Server Programming (the example of the spawn() API is in the code 
download):
http://www.systeminetwork.com/article.cfm?id=51809

An Easier Way to Write a TCP/IP Server Program
http://www.systeminetwork.com/article.cfm?id=53182