Request-reply service in Lua

Table of Contents

--
-- Hello World server
-- Connects REP socket to tcp://*:5560
-- Expects "Hello" from client, replies with "World"
--
-- Author: Robert G. Jakabosky <moc.mlaerderahs|ybbob#moc.mlaerderahs|ybbob>
--
require"zmq"
require"zhelpers"

local context = zmq.init(1)

-- Socket to talk to clients
local responder = context:socket(zmq.REP)
responder:connect("tcp://localhost:5560")

while true do
-- Wait for next request from client
local msg = responder:recv()
printf ("Received request: [%s]\n", msg)

-- Do some 'work'
s_sleep (1000)

-- Send reply back to client
responder:send("World")
end
-- We never get here but clean up anyhow
responder:close()
context:term()