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MQSeries.net Forum Index » IBM MQ Java / JMS » Can Channel exits be operated on selected messages?

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eswarnv
PostPosted: Thu Nov 27, 2003 11:13 pm    Post subject: Can Channel exits be operated on selected messages? Reply with quote

Voyager

Joined: 20 Dec 2001
Posts: 88
Hi

My Scenario,

I have DQM implementation(one sender/receiver on both the queue managers) in my application. One of the message which goes to target qmgr carries "PASSWORD" . I want to encrypt/decrypt only this message, not all messages.

How can I achieve this? If I write a channel exit, can I make that channel exit operates on only selected messages.

Any ideas please respond.

Many Thanks
Eswar
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MichaelR
PostPosted: Fri Nov 28, 2003 8:32 am    Post subject: Reply with quote

Apprentice

Joined: 20 May 2002
Posts: 37
Location: Tampa
Assuming you are using the same channel to transport different types of messages, you would have to build logic in the exit to make the determination to encrypt. You should then have the Exit modify a byte in the TSH to indicate the message has been encrypted. This byte would trigger the de-encryption process on the receiving side. The Intercommunication Guide discusses this approach.

Alternatively, you could define a channel exclusively for this message type and configure this channel with the exit. Routing to the channel would be "managed" by the XMITQ value on the QRemote definition.

MichaelR
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