Re: TCP/IP Sockets

["Scott Klement" <infosys@xxxxxxxxxxxx>]

You can do this with the select() call from the socket API.   It
allows you to wait for input/output on one or more sockets, with
an optional timeout given.

Its also useful when you're waiting for i/o on more than one socket
and want to take whatever data arrives first (much the way you might
use data queues with display/icf files)

Unfortunately, select() is a little difficult from RPG, because in C
you use "macros" to set/clear/check the value of a "descriptor set"
(a set of sockets that you want to check for data on)

I've made RPG sub-procedures that I use instead of the C macros
when using select() from RPG.  If you need them, let me know and
I'll post them..

Scott Klement
Information Systems Manager
Klement's Sausage Co, Inc.


Chris Bipes <ChrisB@cross-check.com> wrote:
> First I want to thank everyone for their support.  I have my socket
>  client
> working, with one minor glitch.  It will wait forever for a response
>  from
> the socket server.  I want to timeout after xx seconds.  the send an
> receiver timer options are not supported.  Once I have connected to
>  the
> server, how does one timeout if the server does not respond to a
>  request.
> My program just sits at TIMW.  I am using an "AF_INET / SOCK_STREAM"
> connection.  I am the client.  If the server is hung, I want to clos
>  the
> connection and establish a new connection then resend the transactio
>   I do
> not now how to control this timeout value.  Any suggestions will be
> appreciated.
>
> Thanks again,
>
> Christopher K. Bipes  mailto:ChrisB@Cross-Check.com
> Sr. Programmer/Analyst  mailto:Chris_Bipes@Yahoo.com
> CrossCheck, Inc.  http:\\www.cross-check.com
> 6119 State Farm Drive  Phone: 707 586-0551 x 1102
> Rohnert Park  CA  94928 Fax: 707 586-1884
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* This is the RPG/400 Discussion Mailing List!  To submit a new         *
* message, send your mail to "RPG400-L@midrange.com".  To unsubscribe   *
* from this list send email to MAJORDOMO@midrange.com and specify       *
* 'unsubscribe RPG400-L' in the body of your message.  Questions should *
* be directed to the list owner / operator: david@midrange.com          *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *