Can't get hello world example to work

[BjRo]

Hey there,

this might potentially be a noob question, but I've got trouble getting the simplest 'Hello World' example two work.

I've started to read the ZMQ book and wanted to port the examples over to elixir. The code I'm talking about is located here https://github.com/BjRo/zguide/commit/fdcf59738cfa86afd674ff72ee890893a41cf01a

The server seems to start correctly. However when I try to connect a client from a different shell I get this:

* Generic server <0.60.0> terminating
** Last message in was {connect,tcp,{127,0,0,1},5555,[]}
** When Server state == {'Elixir.Exzmq.Socket',<0.2.0>,
                            {'Elixir.Exzmq.Socket.Fsm.FsmState',
                                'Elixir.Exzmq.Socket.Req',idle,
                                {'Elixir.Exzmq.Socket.Req.State',none}},
                            <<>>,passive,[],none,[],none,[],[],[],[]}
** Reason for termination ==
** {noproc,{gen_server,call,
                       ['Elixir.Exzmq.Link.Sup',{start_child,[]},infinity]}}
** exit {{:noproc, {:gen_server, :call, [Exzmq.Link.Sup, {:start_child, []}, :infinity]}}, {:gen_server, :call, [#PID<0.60.0>, {:connect, :tcp, {127, 0, 0, 1}, 5555, []}]}}
    (stdlib) gen_server.erl:180: :gen_server.call/2
    (zmq) lib/hwclient.ex:5: Zmq.HWclient.run/0
    (stdlib) erl_eval.erl:655: :erl_eval.do_apply/6
    (elixir) src/elixir.erl:140: :elixir.eval_forms/4
    (elixir) lib/code.ex:130: Code.do_eval_string/3
    (elixir) lib/enum.ex:517: Enum."-each/2-lists^foreach/1-0-"/2
    (elixir) lib/enum.ex:517: Enum.each/2
    (mix) lib/mix/tasks/run.ex:53: Mix.Tasks.Run.run/1

It looks like a missed pattern match in connect. Is there something obvious I'm doing wrong? Is it the way I start things via mix run -e "Zmq.HWclient.run"?

[plemanach]

Hi,

You need to start the exzmq OTP application, you can add this to you mix file

def application do
    [
      applications: [:exzmq]
    ]
  end

[BjRo]

Man, I knew I was missing something really obvious :-)

Thx, works like a charm now.