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https://issues.apache.org/jira/browse/AMQ-3359?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13182607#comment-13182607
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Christian Posta commented on AMQ-3359:
--------------------------------------
sorry for the many updates and comments, but i have one more. my patch was
written against the 5.4.3 tag
> UDP Transport connector listens on a random port number
> -------------------------------------------------------
>
> Key: AMQ-3359
> URL: https://issues.apache.org/jira/browse/AMQ-3359
> Project: ActiveMQ
> Issue Type: Bug
> Components: Broker
> Affects Versions: 5.4.0, 5.4.1, 5.4.2, 5.5.0
> Reporter: Amir Malekpour
> Labels: broker, port, transport, udp
> Attachments: AMQ-3359.patch, AMQ-3359.patch, UpdTransportBindTest.java
>
> Original Estimate: 5m
> Remaining Estimate: 5m
>
> The broker listens on a random UDP port number instead of the one configure
> in the URI. The port number changes each time the broker is restarted.
> However, the management console indicates that the broker's listening on the
> configured port number while it is not the case (netstat shows another UDP
> port number). The reason is that (as seen in the following block) the
> UdpTransport constructor does not assign "this.port" from remoteLocation but
> only reads the address and leaves "this.port" to be zero. Subsequently, Java
> API picks any available port number when it is creating the DatagraSocket.
> The solution is to add this line: "this.port = remoteLocation.getPort();" to
> the following constructor as seen in the accompanying patch.
> public UdpTransport(OpenWireFormat wireFormat, URI remoteLocation) throws
> UnknownHostException, IOException {
> this(wireFormat);
> this.targetAddress = createAddress(remoteLocation);
> description = remoteLocation.toString() + "@";
> }
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