Message exit

 

A message exit can be used only on a message channel, not on an MQI channel. It has access to both the transmission queue header, MQXQH, which includes the embedded message descriptor, and the application data in a message. It can modify the contents of the message and change its length. A message exit can be used for any purpose that requires access to the whole message rather than a portion of it.

Message exits can be used to provide the security services described in the following sections.

• Identification and authentication
  

• Access control
  

• Confidentiality
  

• Data integrity
  

• Non-repudiation
  

• Other uses of message exits
  

 

Parent topic:

Providing your own link level security

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