Messages can be unilaterally sent from a CUP to an MHP. This is called unidirectional sending of messages.

A CUP executes the cltSend method to send a message to an MHP.

To enable unidirectional sending of messages, you must preset the following specifications in the TP1/Client/J environment definition:

• Specify the host name of the node on which the MHP resides in the dcsndhost operand.
• Specify the port number of the MHP in the dcsndport operand (this is the port number specified with the portno operand of the mcftalccn definition command in the MCF communication configuration definition).
• Specify DCCLT_ONEWAY_SND in the dcsndrcvtype operand.

The following figure shows unidirectional sending of a message.

Figure 2-18 Unidirectional sending of a message