Hi David, Thanks for your reply.
Gone through your message, but I am still not able to figure out the API to be used for add & retrieve metadata in the message. Do anyone know how to add/retrieve the metadata in/from the message? Also what all properties are supported in zmq_msg_set() Thanks in advance. Regards, Bharat On Wed, Jul 20, 2016 at 4:14 PM, David Jelenc <david.jel...@fri.uni-lj.si> wrote: > Bharat, > > unfortunately, I do not have an example at hand. AFAIK, it was fairly > straightforward. I was using zmqpp bindings: > > - you set up a ZAP handler that authenticates clients (CURVE in my case), > - then, whenever a client connects, ZAP handler authenticates it, > - and from then on each message is equipped with additional properties > describing the client. > > See this thread for some more pointers: > > http://lists.zeromq.org/mailman/private/zeromq-dev/2016-May/030487.html > (read it bottm-up) > > Best, > David > > PS Just to be clear -- PUSH and PULL sockets still won't have the identity > property, but you should be able to identify clients based on their > credentials. > > On 20. 07. 2016 07:39, Bharat Somani wrote: > >> Hi, >> >> Can you point to any API/example which will facilitate the addition of >> key-value (meta-data) pairs in the message sent from client? >> I tried to search with respect to ZAP and found that it only facilitates >> the type of authentication to be used. But I am not able to locate any >> API which add/retrieve the key value pairs. >> >> >> Regards, >> Bharat >> >> On Tue, Jul 19, 2016 at 7:17 PM, David Jelenc >> <david.jel...@fri.uni-lj.si <mailto:david.jel...@fri.uni-lj.si>> wrote: >> >> Another option would also be to use ZAP to authenticate clients. >> Once a client is authenticated, key-value (meta-data) pairs are >> added to each message so you always know whom each message came from. >> >> On 19. 07. 2016 15:45, Diego Fons wrote: >> >> Hi, >> >> ZMQ_IDENTITY is used only with DEALER socket. You can not >> retrive client >> information with PUSH/PULL sockets (they are not implemented for >> this). >> >> You can: >> 1) Re-implement your application to use DEALER/ROUTER or >> 2) Implement an abstraction layer that provides client >> identification >> (ie. build your own protocol). >> >> I'd choose the first one, but I don't know the main purpose of the >> application. >> >> Regards. >> >> On Tue, Jul 19, 2016 at 9:31 AM, Bharat Somani >> <bharatdsom...@gmail.com <mailto:bharatdsom...@gmail.com> >> <mailto:bharatdsom...@gmail.com >> >> <mailto:bharatdsom...@gmail.com>>> wrote: >> >> >> Hi All, >> >> I have a process A which is creating ZMQ_PULL type of >> socket and >> bind on some port. >> >> Now I have process B, C, D (all on same system) which all >> creates >> ZMQ_PUSH types of sockets in each process respectively and >> connects >> to the port on same system on which process A is bind to. >> >> In process A I am using API zmq_msg_recv() for receiving the >> messages. Now I want to identify the process (A or B or C) >> from >> which that message is received. >> is there any way to know which process has sent this message? >> >> I tried to set the ZMQ_IDENTITY in client processes (B,C & >> D) but >> dont know how to get the identity from received message on >> the >> server process A >> >> Any pointer in this regard? >> >> >> >> -- >> With warm regards, >> Bharat >> >> _______________________________________________ >> zeromq-dev mailing list >> zeromq-dev@lists.zeromq.org <mailto:zeromq-dev@lists.zeromq.org> >> <mailto:zeromq-dev@lists.zeromq.org >> <mailto:zeromq-dev@lists.zeromq.org>> >> http://lists.zeromq.org/mailman/listinfo/zeromq-dev >> >> >> >> >> -- >> Diego Andrés Fons >> Intraway Corp. >> Solution Developer >> AR Office: +54 (11) 6040 4000 >> US Office: +1 (516) 620 3890 >> Email: diego.f...@intraway.com <mailto:diego.f...@intraway.com> >> <mailto:diego.f...@intraway.com <mailto:diego.f...@intraway.com>> >> >> Visit our website at http://www.intraway.com >> <http://www.intraway.com/> >> Proud to be an ISO 9001:2008 certified company >> >> >> _______________________________________________ >> zeromq-dev mailing list >> zeromq-dev@lists.zeromq.org <mailto:zeromq-dev@lists.zeromq.org> >> http://lists.zeromq.org/mailman/listinfo/zeromq-dev >> >> _______________________________________________ >> zeromq-dev mailing list >> zeromq-dev@lists.zeromq.org <mailto:zeromq-dev@lists.zeromq.org> >> http://lists.zeromq.org/mailman/listinfo/zeromq-dev >> >> >> >> >> >> >> _______________________________________________ >> zeromq-dev mailing list >> zeromq-dev@lists.zeromq.org >> http://lists.zeromq.org/mailman/listinfo/zeromq-dev >> >> _______________________________________________ > zeromq-dev mailing list > zeromq-dev@lists.zeromq.org > http://lists.zeromq.org/mailman/listinfo/zeromq-dev > -- With warm regards, Bharat Somani M +91 7588877776
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