Hi Mark,

Would you provide a minimal test case that demonstrates the problem?

Thanks
Pieter

On Sat, May 18, 2013 at 6:56 PM, Mark Sutheran <mark_suthe...@yahoo.com> wrote:
> Hi,
>
> I appear to have a issue with PUB/SUB apparently 'dropping' the first byte.
>
> Setup:
>  * Basic PUB/SUB running on same machine over TCP/localhost.
>  * Message has first 4 bytes as subscription id, rest payload
>
> Problem:
>  * On dev box runs fine
>  * On prod box the subscriber sees no messages
>  * The reason is that the received message is 'missing' the first byte
>
> Logs:
>
> Machine 1 (Ubuntu 12.04 64, JZMQ/ZMQ 3.2.0) runs fine, e.g.:
>
> 01:19:10:042 DEBUG [qtp1866572071-24] Publishing: [0, 0, 0, 13, -49, 0, 0,
> 1, 62, -72, -90, -29, 63, 7, -108, -53, 63, -12, -122, -13, 110, -8, 5, 96,
> -53, 64, 89, -9, -101, -128, 35, -90, -50, -53, 0, 0, 0, 0, 0, 0, 0, 0, -53,
> 64, 68, 0, 0, 0, 0, 0, 0, 0]
> 01:19:10:042 DEBUG [SubscriptionDataHandlerThread] Received data: [0, 0, 0,
> 13, -49, 0, 0, 1, 62, -72, -90, -29, 63, 7, -108, -53, 63, -12, -122, -13,
> 110, -8, 5, 96, -53, 64, 89, -9, -101, -128, 35, -90, -50, -53, 0, 0, 0, 0,
> 0, 0, 0, 0, -53, 64, 68, 0, 0, 0, 0, 0, 0, 0]
>
> Machine 2 (Ubuntu 12.04 64, JZMQ/ZMQ 3.2.2) and the subscriptions
> 'disappear'... digging into it the receiver appears to drop the first byte
> of the messages 100% of the time, e.g.:
>
> 05:20:01:603 DEBUG [qtp1038722314-22] Publishing: [0, 0, 0, 13, -49, 0, 0,
> 1, 62, -72, -90, 61, 85, 7, -108, -53, 63, -12, -122, -13, 110, -8, 5, 96,
> -53, 64, 89, -9, -101, -128, 35, -90, -50, -53, 0, 0, 0, 0, 0, 0, 0, 0, -53,
> 64, 68, 0, 0, 0, 0, 0, 0, 0]
> 05:20:01:603 DEBUG [SubscriptionDataHandlerThread] Received data: [0, 0, 13,
> -49, 0, 0, 1, 62, -72, -90, 61, 85, 7, -108, -53, 63, -12, -122, -13, 110,
> -8, 5, 96, -53, 64, 89, -9, -101, -128, 35, -90, -50, -53, 0, 0, 0, 0, 0, 0,
> 0, 0, -53, 64, 68, 0, 0, 0, 0, 0, 0, 0]
>
> Connecting Machine 1 (SUB) to Machine 2 (PUB) also produces the same
> results.
>
> It's presumably an issue with my code however, it's the same code running on
> both boxes. The one obvious difference is the ZMQ version, though I've not
> seen this before and it doesn't seem to correspond to anything I can see on
> the buglist. Any ideas?
>
> Thanks in advance,
> Mark
>
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