Microsoft Terminal Services and RPG socket programming

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AS/400
Distribution/logistics applications
IBM DB2
Management
Microsoft Windows
OS
RPG
Security
Servers
SQL Server
Quick background: We are a software developer of medical billing software and have recently partnered with a document imaging company and have developed an interface between our AS/400 database and their document imaging server using RPG socket programs. Most of our clients are using Client Access to communicate with the 400 and our socket programs use the PC's TCP/IP address to determine what port to send messages to. Problem: We have a client running a Microsoft Terminal Services network and all the PC's are running a thin client environment. Since all the PC's are using the same TCP/IP address, which is the address of the Terminal Services Server we are having a problem determining how to send data back to the individual PC that requested the information. Question: Is there a way of identifying the workstation on the Terminal Services Server from within the RPG socket program or at least from the AS/400?
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I know that all the clients have unique addresses between themselves and the server. You seem to say that the only address the ‘400’ sees is that of the server itself. The server is supposed handle routing between client and outside world. If a client issues a request and the ‘400’ responds does the data not get to the originating client?
Part of the purpose of ‘Terminal Services’ is the isolation of client from outside source. Are you using rpg:sockets for out of band connection?
Waiting for clarification – hopeful but confused.

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  • CraigFox
    Summary of question: You have clients that access an AS400 environement through an application runnning on a Terminal Server. The AS400 uses the connecting IP information to distinguish between the various clients and they all look the same to the AS400, the WIndows Terminal Server. Resolution: Citrix Presentation Server 4's engine has been rewritten to resolve this type of problem. Amongst other isolation capabilities, each session can be assigned a unique IP stack. THis should allow the AS400 to distinguish between differing sessions from the same TS server. Notes: It may be cheaper to change the app than go to Citrix and you should be able to get an eval of Citrix to see of this will resolve your problem. Hope this helps
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