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Channel exits

The channel exits available to the WebSphere MQ client environment on UNIX systems and Windows are:

• Send exit

• Receive exit

• Security exit

These exits are available at both the client and the server end of the channel. Exits are not available to your application if you are using the MQSERVER environment variable. Exits are explained in the WebSphere MQ Intercommunication manual.

The send and receive exits work together. There are several possible ways in which we can use them:

• Splitting and reassembling a message

• Compressing and decompressing data in a message (this functionality is provided as part of WebSphere MQ, but you might want to use a different compression technique)

• Encrypting and decrypting user data (this functionality is provided as part of WebSphere MQ, but you might want to use a different encryption technique)

• Journaling each message sent and received

We can use the security exit to ensure that the WebSphere MQ client and server machines are correctly identified, as well as to control access to each machine.

 

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