[zeromq-dev] ZMTP internals ?

[Pieter Hintjens]

On Thu, Dec 5, 2013 at 5:24 PM, Laurent Alebarde <l.alebarde at free.fr> wrote:

> 1) Are there some hidden messages exchanged in the ZMTP protocol besides
> greetings, handcheck commands and messages ?

No, the code implements the ZMTP v3/v2/v1 protocol according to the peer.

> 2) In the ZMTP RFC23, it is explained that the socket type SHOULD be
> specified by the sender in the meta-data that are sent after or at the end
> of the handcheck. As a consequence, may I assume that the identity is not
> sent in the greetings and handcheck commands, even to a ROUTER (since the
> peer does not know yet it talks to a ROUTER) ?
> 3) In addition, the identity is unknown until the end of the handcheck
> (communicated in the metadata) ?

The identity is sent in the metadata.

-Pieter