tuntun is here

main.go

@@ -0,0 +1,57 @@
+package main
+
+import (
+	"flag"
+	"fmt"
+	"net"
+	"os"
+	"strings"
+
+	"github.com/hypebeast/go-osc/osc"
+)
+
+var options struct {
+	listen  string
+	forward string
+}
+
+func exit(status int, t string, args ...interface{}) {
+	if !strings.HasSuffix(t, "\n") {
+		t += "\n"
+	}
+
+	if status != 0 {
+		fmt.Fprintf(os.Stderr, t, args...)
+	} else {
+		fmt.Fprintf(os.Stdout, t, args...)
+	}
+	os.Exit(status)
+}
+
+func main() {
+	flag.StringVar(&options.listen, "listen", "0.0.0.0:9220", "listen address for receiving OSC messages")
+	flag.StringVar(&options.forward, "forward", "127.0.0.1:9225", "forward address for sending TCP data")
+	flag.Parse()
+
+	fmt.Printf("dialing %s\n", options.forward)
+	conn, err := net.Dial("tcp", options.forward)
+	if err != nil {
+		exit(1, "unable to dial upstream server: %v", err)
+	}
+	defer conn.Close()
+	fmt.Println("connected to upstream tcp handler")
+
+	server := &osc.Server{Addr: options.listen}
+	server.Handle("/example", func(msg *osc.Message) {
+		fmt.Printf("received OSC message: %v\n", *msg)
+		if len(msg.Arguments) == 0 {
+			return
+		}
+		_, err := fmt.Fprintf(conn, "%d\n", msg.Arguments[0])
+		if err != nil {
+			exit(1, "ERROR: unable to forward message to upstream: %v\n", err)
+		}
+	})
+	fmt.Printf("listening on %s\n", options.listen)
+	server.ListenAndServe()
+}