Examples of client input and the listener processing

The following are examples of client input and the listener processing that results from them. The data fields referenced can be found in IBM listener output format.

Note: Parameters are separated by commas.

Example	Listener response
`TRN1,userdataishere`	It starts the CICS® transaction TRN1 using task control, and passes to it the data `userdataishere` in the field CLIENT-IN-DATA.
`TRN2,,IC,000003`	It starts the CICS transaction TRN2 using interval control, without user data. There is a 3-second delay between the initiation request from the listener and the transaction startup in CICS.
`TRN3,userdataishere,TD`	It writes a message to the transient data queue named `TRN3` in the format described by the structure TCPSOCKET-PARM, described in IBM listener output format. The data contained in `userdataishere` is passed to the field CLIENT-IN-DATA. This queue must be an intrapartition queue with trigger-level set to 1. It causes the initiation of transaction TRN3 if it is not already active. This transaction should be written to read the transient data queue and process requests until the queue is empty. This mechanism is provided for those server transactions that are used very frequently and for which the overhead of initiating a separate CICS transaction for each server request could be a performance concern.
`TRN3,,TD`	It causes data to be placed on transient data queue TRN3, which in turn causes the start or continued processing of the CICS transaction TRN3, as described in the TRN3 previous example. There is no user data passed.
`TRN4`	It starts the CICS transaction TRN4 using task control. There is no user data passed to the new transaction.