On Wed, 12 Aug 2009 16:52:42 -0400, Gil, Victor x28091 <victor....@broadridge.com> wrote:
>Jantje, > >I am intrigued. Can you elaborate a bit on this idea? >[Doc pointers, code samples, etc.] You can find the fine manual that describes the CICS side of such at z/OS Communications Server IP CICS Sockets Guide ( http://www.elink.ibmlink.ibm.com/publications/servlet/pbi.wss? CTY=US&FNC=SRX&PBL=SC31-8807-05 ). The batch side of things is described in z/OS Communications Server IP Sockets Application Programming Interface Guide and Reference ( http://www.elink.ibmlink.ibm.com/publications/servlet/pbi.wss? CTY=US&FNC=SRX&PBL=SC31-8788-07 ). I did code a child server, but I am afraid I cannot give you that code, because it was developed for a specific customer who paid for it and who actually owns that code. But the documentation is fairly good and there are samples. The code for the client was for Windows. The point, however, is that CICS comes with infrastructure (the CSKL transaction) that makes managing a listener in CICS quite simple and effective. All you need to do is to code the child server transaction in your programming language of choice. The book gives you guidelines on how to structure the program for this transaction. And you do not have to worry about how to listen for an incoming connection (because that is the difficult part that CICS has already done for you...). Your transaction is started by CSKL and receives the socket number that represents the connection. All you need to do is to TAKESOCKET and start receiving (and sending) data over it. For the batch program, you just do simple sockets programming, again in the programming language of your choice. The connection is set up by opening a socket to the port where the CSKL is listening, send the trancode plus some security-related information (if you need it). CICS is listening for incoming connections, spawns the transaction, corresponding to the trancode you ask for and GIVESOCKET the socket to it. Then your batch program and your CICS transaction engage in a TCP conversation and can pass data back and forth among them without restriction. Do read the book; it is all in there. If you need more information, please ask me specific, detailed questions off- list. Cheers, Jantje. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
