Racket hwclient example: Assertion failed

[jvalleroy]

I'm using Racket v6.3 on Debian testing. hwserver is running and I can connect to it with ncat. But hwclient fails with the following:

$ racket hwclient.rkt 
Connecting to hello world server…
Sending request 0…
Assertion failed: check () (src/msg.cpp:248)
Aborted

[bozhodimitrov]

Please provide the settings of your server and client, and if it is possible - post a snipet of the server/client code that fails, so we can give you an advice or investigate further more.

Thanks for your report.

[jvalleroy]

The code is here: https://github.com/imatix/zguide/blob/master/examples/Racket/hwclient.rkt
That's what I'm running, along with hwserver.rkt.

[bozhodimitrov]

It looks like that the current available bindings for racket works only with zeromq up to 3.x.
Additional info: iracket, racket-zmq-examples

You will need to reinstall zeromq with 3.x if you have 4.x.

[jvalleroy]

I downgraded to zeromq 3.2.4, and it's working. Thanks!