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
<[email protected] <mailto:[email protected]>> 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
<[email protected] <mailto:[email protected]>
<mailto:[email protected]
<mailto:[email protected]>>> 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?
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With warm regards,
Bharat
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