}
func init() {
- flag.StringVar(&cmd_port_, "cmdport", "tcp://localhost:5555", "zmq command socket path")
- flag.StringVar(&sub_port_, "pubport", "gmp://*:6666", "zmq subscribe/listen socket path")
+ flag.StringVar(&cmd_port_, "cmdport", "tcp://127.0.0.1:3232", "zmq command socket path")
+ flag.StringVar(&sub_port_, "pubport", "pgm://233.252.1.42:4242", "zmq subscribe/listen socket path")
flag.Usage = usage
flag.Parse()
}
func LineReader(out chan <- [][]byte, stdin * os.File) {
linescanner := bufio.NewScanner(stdin)
linescanner.Split(bufio.ScanLines)
+ defer close(out)
for linescanner.Scan() {
if err := linescanner.Err(); err != nil {
log.Print(err)
- close(out)
return
}
- text := bytes.Fields([]byte(linescanner.Text()))
+ //text := bytes.Fields(linescanner.Bytes()) //this returns a slice (aka pointer, no array deep-copy here)
+ text := bytes.Fields([]byte(linescanner.Text())) //this allocates a string and slices it -> no race-condition with overwriting any data
if len(text) == 0 {
continue
}
}
}
-func main() {
- cmd_chans, sub_chans := ZmqsInit(cmd_port_, sub_port_)
+func ByteArrayToString(bb [][]byte) string {
+ b := bytes.Join(bb, []byte(" "))
+ return string(b)
+}
+
+func main() {
+ zmqctx, cmd_chans, sub_chans := ZmqsInit(cmd_port_, sub_port_)
defer cmd_chans.Close()
defer sub_chans.Close()
+ defer zmqctx.Close()
var listen bool
var ignore_next bool
user_input_chan := make(chan [][]byte, 1)
go LineReader(user_input_chan, os.Stdin)
defer os.Stdin.Close()
-
+
for {
select {
case input, input_open := (<- user_input_chan):
listen = true
fmt.Println("Now listening")
case "quit":
- break
+ os.Exit(0)
default:
ignore_next = true
cmd_chans.Out() <- input
- fmt.Println( <- cmd_chans.In())
+ log.Print("input sent")
+ reply := <- cmd_chans.In()
+ log.Print("reply received")
+ fmt.Println(ByteArrayToString(reply))
}
} else {
- break
+ os.Exit(0)
}
case pubsubstuff := <- sub_chans.In():
+ log.Print("pubsubstuff",pubsubstuff)
+ if len(pubsubstuff) == 0 { continue}
if ignore_next {
ignore_next = false
continue