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

[mgarton@xxxxxxxxxxxxxxx]

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