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Posted to dev@activemq.apache.org by "Hiram Chirino (JIRA)" <ji...@apache.org> on 2006/05/22 17:03:51 UTC
[jira] Commented: (AMQ-718) Incorrect length specification in loose
encoding?
[ https://issues.apache.org/activemq/browse/AMQ-718?page=comments#action_36198 ]
Hiram Chirino commented on AMQ-718:
-----------------------------------
Good find.. I think it's worth delaying the 4.0 release to fix this.
> Incorrect length specification in loose encoding?
> -------------------------------------------------
>
> Key: AMQ-718
> URL: https://issues.apache.org/activemq/browse/AMQ-718
> Project: ActiveMQ
> Type: Bug
> Components: Transport
> Versions: 4.0, 4.0 RC2, 4.0 RC3
> Reporter: Andrew Lusk
> Assignee: Hiram Chirino
> Fix For: 4.1
>
>
> Unless loose-encoded length is mean to mean something different from tight-encoded length, I believe that the length written to the wire for loosely-encoded OpenWire messages is off by 4. I imagine this hasn't been caught before because most clients synchronously read packets off the wire and so can ignore the length specification.
> --- activemq-core/src/main/java/org/apache/activemq/openwire/OpenWireFormat.java (revision 399408)
> +++ activemq-core/src/main/java/org/apache/activemq/openwire/OpenWireFormat.java (working copy)
> @@ -172,7 +172,7 @@
> sequence = baos.toByteSequence();
>
> if( !sizePrefixDisabled ) {
> - size = sequence.getLength()-4;
> + size = sequence.getLength();
> ByteArrayPacket packet = new ByteArrayPacket(sequence);
> PacketData.writeIntBig(packet, size);
> }
> @@ -253,7 +253,7 @@
> if( !sizePrefixDisabled ) {
> looseOut.close();
> ByteSequence sequence = baos.toByteSequence();
> - dataOut.writeInt(sequence.getLength()-4);
> + dataOut.writeInt(sequence.getLength());
> dataOut.write(sequence.getData(), sequence.getOffset(), sequence.getLength());
> }
>
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