Created
May 21, 2013 12:28
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Request-reply broker in Go
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// Simple request-reply broker | |
// | |
// Author: Brendan Mc. | |
// Requires: http://github.com/alecthomas/gozmq | |
package main | |
import ( | |
zmq "github.com/alecthomas/gozmq" | |
) | |
func main() { | |
context, _ := zmq.NewContext() | |
defer context.Close() | |
frontend, _ := context.NewSocket(zmq.ROUTER) | |
backend, _ := context.NewSocket(zmq.DEALER) | |
defer frontend.Close() | |
defer backend.Close() | |
frontend.Bind("tcp://*:5559") | |
backend.Bind("tcp://*:5560") | |
// Initialize poll set | |
toPoll := zmq.PollItems{ | |
zmq.PollItem{Socket: frontend, Events: zmq.POLLIN}, | |
zmq.PollItem{Socket: backend, Events: zmq.POLLIN}, | |
} | |
for { | |
_, _ = zmq.Poll(toPoll, -1) | |
switch { | |
case toPoll[0].REvents&zmq.POLLIN != 0: | |
message, _ := toPoll[0].Socket.Recv(0) | |
backend.Send(message, 0) | |
case toPoll[1].REvents&zmq.POLLIN != 0: | |
message, _ := toPoll[1].Socket.Recv(0) | |
frontend.Send(message, 0) | |
} | |
} | |
} |
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