[zeromq-dev] czmqjni status?

Kevin Sapper kevinsapper88 at gmail.com
Tue Apr 11 12:15:15 CEST 2017

Hi James,

the czmqjni wrapper is a very thin layer above the czmq API. So any 
example in the
czmq README should work. Though some APIs might not be available in the 
due to technical reasons. If you're not able to convert the C examples 
in the README,
let me know then I'll try to create one later this week.

While the czmq API is stable the jni wrapper's API is not. So we are 
happy to receive

APIwhise jzmq and jeromq are the same. Also those APIs a more javalike 
and both
libraries have been more tested than czmqjni. But they don't support 
if I'm not  mistaken, which would be your reason to use czmqjni instead.


On Di, Apr 11, 2017 at 4:30 , James Gatannah <james.gatannah at gmail.com> 
> I've been dabbling with the bindings from github and the source
> distribution, and I'm starting to suspect that they aren't in a usable
> state yet.
> My specific problem is that I can't figure out how to send a message.
> The closest I've managed to get is using Zframe.send(), which takes a
> long parameter for the destination. If I pass in the Zsocket's .self
> member, I get an error about attempting a socket operation on a
> non-socket.
> Zsock.send() can't possibly work, since it only passes along the first
> of the variadic arguments.
> I haven't spent much time with Zmsg, since I'm using client/server
> socket types, but it seems to have the same problems as Zframe.
> Am I missing something obvious? Based on what I've found in the
> mailing list archives, it looks like people expect this to work.
> I've run across a few other issues that seem like they should be
> low-hanging fruit (the "standard" czmq socket creation methods really
> should be static, for example), but I've never had a chance to do more
> than glance at GSL when I was reading through the Guide the first
> time, and I've only briefly glanced at zproject.
> And, if this is a stable API, then obviously that part couldn't be
> changed anyway (not that that's a barrier to adding appropriate static
> methods).
> Alternatively, I see a lot of recommendations here to just use jeromq
> instead. Does anyone have any recommendations about the difficulty of
> implementing CLI/SRV there as opposed to jzmq? As ugly as JNI code and
> that build/installation process is, at least I spent some time digging
> through that code a few years back.
> Thanks,
> James
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