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From Luba Hornung <lhorn...@choppertrading.com>
Subject messages get resent after broker is restarted, C++
Date Thu, 14 Jul 2011 23:47:57 GMT
Why after qpid broker is restarted messages which had been received in a previous session get
received again?

1)      I launch a broker, my server and a client.

2)      Server sends messages to clients.

3)      I disconnect broker by Ctrl+c

4)      My client and server wait until I restart the broker again.

5)      The messages that the server had sent in 2) are received by clients again.

After a connection gets broken, I re-open the session and create new senders and receivers
with the same addresses.
I am using C++ qpid version 0.6, messaging api.

Server code:

_broadcaster = _session.createSender(Address("acctUpdates/account_updates; {create:always,
node-properties;{type:topic, durable:True}, link-properties:{reliability:exactly-once}}"));



Client code:

_recevier = _session.createReceiverr(Address("acctUpdates/account_updates; {create:always,
node-properties;{type:topic, durable:True}, link-properties:{reliability:exactly-once}}"));

_receiver.fetch(msg, qpid::sys::TIME_SEC);


_session.sync(); // does not make a difference if it is used or not

Message.setDurability() or .setTTL() are not even in the header files, although the http://qpid.apache.org/apis/0.6/cpp/html/a00119.html
says they exist. "link-properties:{reliability:exactly-once}}" also has no effect.

Qpid-config shows exchange as durable and this is what I want. The queue automatically created
on this exchange is not durable and disappears after ctrl+c.

Thank you.


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