2.4 Processing IMS Server Requests

An IMS server request, also referred to as an inbound request (relative to IMS), is a request issued by a remote client for a service provided by an IMS server transaction.

1. When TMA TCP for IMS receives a request from a remote system, a request message is formatted and is inserted into the IMS message queue, destined for the specified IMS server transaction (the service name for the request corresponds to the transaction code of the IMS server transaction that handles the request).
2. IMS schedules the specified server transaction to process the request message.
3. The server transaction retrieves the request message from the IMS message queue and performs the indicated processing.
4. If a response is required, the server transaction formats a response message and inserts it into the IMS message queue, destined for the TMA TCP for IMS gateway.
5. The TMA TCP for IMS gateway retrieves the response message from IMS and returns it to the requesting remote system via the TCP/IP connection.