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HP OpenVMS Systemsask the wizard |
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The Question is: Where can I find installation information about Task To Task (TTT). I have been trying to locate details on the web. Is there a DEC manual available for TTT or is the information already in one of the system manuals? What I am trying to find out is how TTT collects test data from a PC test environment to enable us to create a test system, using our own test station simulation routines from a PC. The Answer is : DECnet task-to-task communications are documented in the DECnet manuals. In the Wizard's experience, the requirements might initially appear far more imposing than they actually are in practice -- if you are familiar with using sys$qio[w] calls and I/O operations, DECnet task-to-task is quite simple. TCP/IP can also be used to perform task-to-task communications, though communications over TCP/IP are more commonly refered to as socket communications. Information on the TCP/IP interface is available in the TCP/IP Services for OpenVMS documentation and in the DEC C manuals. Socket programming can be performed using the C language, and can also be performed using the sys$qio interface. Some information on the remote end of the connection will also be required. This could be PATHWORKS DECnet or similar, or it could be performed via TCP/IP sockets. Check the programming documentation for PATHWORKS or for the base operating system for details. Example programs include SYS$EXAMPLES:DB*.C, as well as simple DCL code examples such as the "DCL Task-to-Task?" discussion here in Ask The Wizard -- the Digital Press book (an imprint of Butterworth Heinemann; URL http://www.bh.com) _Writing Real Programs in DCL_, second edition, covers DCL task-to-task. For TCP/IP examples, see UCX$EXAMPLES: (prior to V5.0) or TCPIP$EXAMPLES: (in V5.0 and later).
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