zmqpoll.nim

import zmq

# Example in cpp:
# http://zguide.zeromq.org/cpp:mspoller

var spm2 = zmq.connect("tcp://localhost:5556", zmq.Dealer)
var conn2 = zmq.listen("tcp://*:5556", zmq.ROUTER)

var spm = zmq.connect("tcp://localhost:5555",zmq.Dealer)
var conn = zmq.listen("tcp://*:5555", zmq.ROUTER)

var pollitem : TPollItem
var pollitem2 : TPollItem
var pollarr : array[2,TPollItem]

pollitem.socket = conn.s
pollitem.events = ZMQ_POLLIN

pollitem2.socket = conn2.s
pollitem2.events = ZMQ_POLLIN

pollarr[0] = pollitem
pollarr[1] = pollitem2

# This is zmq.poll:
# proc poll*(items: ptr TPollItem, nitems: cint, timeout: int): cint{.
#  cdecl, importc: "zmq_poll", dynlib: zmqdll.}

while true:
  echo poll(addr pollarr[0],2,-1) , " messages waiting" # SIGSEGV, Illegal storage access