While playing around with the code (latest version of the zeromq/libzmq repo) I noticed the issue: A recv on a router is supposed to add a message envelope containing the sender's identity, but this doesn't seem happen for auto generated identities.
Attached I have a simple test program that will run either a server (>2 arguments) or client (<=2 arguments), the client starts a ROUTER and simply prints all parts of a message on a single line. The server will use the second argument as IDENTITY and send any further arguments as messages to the client using a DEALER socket. This produces the expected output: $ ./test foo bar baz xyzzy quux Server! $ ./test Client! foo bar foo baz foo xyzzy foo quux So far, so good. Now, if we uncomment the zmq_setsockopt in the server we'd expect the router to produce auto-generated identities, but this doesn't happen. $ ./test foo bar baz xyzzy quux Server! $ ./test Client! bar baz xyzzy quux Did I misunderstand anything or is this a bug?
test.c
Description: Binary data
-- Merijn
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