Javascript client does not establish session properly.
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Key: AMQ-3015
URL: https://issues.apache.org/activemq/browse/AMQ-3015
Project: ActiveMQ
Issue Type: Bug
Affects Versions: 5.4.1
Reporter: Pete Schwamb
In some configurations, the javascript client (amq.js) is not loaded from the
same container that hosts the activemq broker. For example, we have a Rails
app and ActiveMQ both sitting behind apache, and the amq.js file is served
directly by apache.
In these kinds of configurations, when the javascript client first calls
amq.init(), there is no JSESSIONID. Both the POST to establish the
subscription and the GET to start polling are delivered asynchronously, both
without a JSESSIONID, and thus they each end up with different JSESSIONIDS, and
the poll never returns any messages (as that session has no subscription).
This small patch adds support for a callback mechanism that will allow clients
to sign up using a callback mechanism that ensures that the JESSIONID is
established properly before attempting to make a subscription, like this:
amq.init({
uri: '/amq',
sessionInitializedCallback: function() {
amq.addListener("display", "topic://sensors", onMessage);
}
});
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