[zeromq-dev] PUB/SUB appears to be 'missing' first byte 3.2.2

[Mark Sutheran]

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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