RE: OS400 Telnet

Thanks Simon,

This server program is also a client to a business partner that expects the
data in EBCDIC.  Basically the business partner only allows two connection
from each host, both on separate ports.  Since we have several jobs pulling
from a data queue to process transactions, I have to relay thru my server.
The communications that the business partner wants is very specific.  They
also will respond down either connection regardless of the connection we
used to send the request.  Oh what fun.  I love talking TCP to old mainframe
applications.  I just wanted to cheat.  Looks like I have to write the
client to test.  Need to any way for sending the proper formatted data.

Thanks again,

Christopher K. Bipes      mailto:Chris.Bipes@Cross-Check.com
Operations & Network Mgr  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


-----Original Message-----
From: Simon Coulter [mailto:shc@flybynight.com.au]
Sent: Tuesday, July 02, 2002 4:34 AM


Hello Chris,

The Telnet protocol is generally ASCII.  The protocol does allow for
extensions which allow a client and server to negotiate binary
transmission (which could result in EBCDIC data flow and indeed does for
TN5250) along with many other variables.  See RFC 856 (or replacement) for
IAC WILL TRANSMIT-BINARY and IAC DO TRANSMIT-BINARY negotiation.