initial commit

Signed-off-by: Steffen Vogel <post@steffenvogel.de>

cmd/test-send-stun/main.go

@@ -0,0 +1,31 @@
+package main
+
+import (
+	"fmt"
+
+	"github.com/pion/stun"
+)
+
+func main() {
+	// Creating a "connection" to STUN server.
+	c, err := stun.Dial("udp", "127.0.0.1:12345")
+	if err != nil {
+		panic(err)
+	}
+	// Building binding request with random transaction id.
+	message := stun.MustBuild(stun.TransactionID, stun.BindingRequest)
+	// Sending request to STUN server, waiting for response message.
+	if err := c.Do(message, func(res stun.Event) {
+		if res.Error != nil {
+			panic(res.Error)
+		}
+		// Decoding XOR-MAPPED-ADDRESS attribute from message.
+		var xorAddr stun.XORMappedAddress
+		if err := xorAddr.GetFrom(res.Message); err != nil {
+			panic(err)
+		}
+		fmt.Println("your IP is", xorAddr.IP)
+	}); err != nil {
+		panic(err)
+	}
+}