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Damien · Posted: Tue Jul 10, 2001 12:29 am Post subject:

I've got a JMS application that puts a message on a queue and then waits for the response. The MQSI broker that receives the message queries a database and then uses an MQReply node to respond with another message. The database query is done using a compute node which works fine. The problem is that the JMS application that receives the response doesn't recognise the message as a jms message.

The reason for this is that the response message specifies in the MQRFH2 header what type of messge it is, specifically in the mcd folder under the key msd. When the message is sent from the client application the msd key has a value of jms_text but when it comes back it has the value of xml. After further research I've found that the compute node changes the value of this key/value pair, even though the compute node is suppose to copy the headers. Before the message enters the input node it has the correct value in the header, after it is wrong. I've even specifically tried to set this value within the compute node but it always comes out as xml.

The message type is XML and the input node specifies this as the domain. I don't see why this would be a problem and if I understand the documentation correctly it is required for XML messages.

Has anybody experienced this before and more importantly, does anybody have a solution? Am I doing something fundamentally wrong?

Thanks in advance,
Damien