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Date: Thu, 22 Jun 2017 01:48:14 -0700 (PDT)
From: "klaus.holst.jacobsen" <klaus.holst.jacobsen@gmail.com>
To: users@activemq.apache.org
Message-ID: <1498121294854-4727730.post@n4.nabble.com>
Subject: CMS 3.9.2 process hangs when calling setMessageListener(..) in
 onMessage(...)
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archived-at: Thu, 22 Jun 2017 12:39:07 -0000

Hello!

I would like to send a request and get a reply from a message handlers
onMessage(...) method.

Something like this:


void MyClass::onMessage(cms::Message m)
{
cms::Destination* tempDest = session_->createTemporaryQueue();
cms::MessageConsumer* responseConsumer = session_->createConsumer(tempDest);

SomeOtherMessageHandler replyHandler;
responseConsumer->setMessageListener(&replyHandler);

cms::Message* request = session_->createTextMessage();
m->setCMSReplyTo(tempDest);
p->send(m);

...wait for response...

cms::Message* response = replyHandler.getResponse();

}

...but my code hangs in setMessageListener(...);
My guess is that because I am in the onMessage method i have locked a mutex
that is required to do setMessageHandler(...)

Is this an error or not? 
In any case, what is the work-around to be able to do request/reply from a
message handler?

Thanks in advance.

Regards
Klaus


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