suppressMessages(library(pbdZMQ, quietly = TRUE))
context <- zmq.ctx.new()
receiver <- zmq.socket(context, ZMQ.ST()$PULL)
zmq.connect(receiver, "tcp://localhost:5557")
a1 <- zmq.poll(c(receiver), ZMQ.PO()$POLLIN)
print(a1)
a2 <- tryCatch(zmq.poll(c(receiver), ZMQ.PO()$POLLIN),
interrupt = function(c) return(9),
error = function(c) return(99))
print(a2)
a3 <- tryCatch(zmq.poll(c(receiver), ZMQ.PO()$POLLIN,
MC = ZMQ.MC(check.eintr = TRUE)),
interrupt = function(c) return(9),
error = function(c) return(99))
print(a3)
a4 <- zmq.poll(c(receiver), ZMQ.PO()$POLLIN,
MC = ZMQ.MC(check.eintr = TRUE))
print(a4)
print("This message should not be reached.")
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