I've created this zeromq-4.0.4 MultiPartMessage.h <http://pastebin.com/hhKDamzt> class in C++. It functions nicely. However I cannot fathom one aspect of its behaviour....
When the receive constructor is called to receive a message off a ROUTER socket then the inbound message identity should be stored in the class member variable 'id' (circa line 161). However whenever I use the getIdentity() method on either Windows 7 or Debian Wheezy to get the value then print the identity to the console window then there is nothing to see, just a blank. What baffles me is that when replying to the message I use the getIdentity() method of the received message to set the destination identity in the send constructor of a different class instance AND the message gets back through to the originator. So it's possible to pass messages from DEALER to ROUTER put the MultiPartMessage in a queue and later send it back to the originating DEALER; but I cannot visualise the identity value in the console! Does anyone know why this should be? Perplexed. Riskybiz.
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