On Wed, Sep 17, 2014 at 6:42 PM, David Robillard <d@xxxxxxxxxxxx> wrote: > It seems that raw nanomsg sockets make it possible to do such things, > but how to go about it isn't clear to me. They are, and there are numerous discussions about it in the mailing list archives. The gist of it is that a recv on an AF_RAW socket gives you a small header plus the actual message, and the header will allow you to route it back to the appropriate client. Sorry that we don't have any particularly useful documentation for this; do ask more questions in this thread after digging through the list archive for a bit. Cheers, Dirkjan