Integration: Add Go port

Relates to #5

integration/index.js

@@ -9,7 +9,7 @@ flags.defineBoolean(listenFlag, false, 'Listen for incoming connections.')
 flags.parse()
 const listening = flags.get(listenFlag)
 
-const mh = multiaddr('/ip4/127.0.0.1/tcp/9090/http/p2p-webrtc-direct')
+const maddr = multiaddr('/ip4/127.0.0.1/tcp/9090/http/p2p-webrtc-direct')
 
 const direct = new WebRTCDirect()
 
@@ -31,11 +31,11 @@ if (listening) {
     })
   })
 
-  listener.listen(mh, () => {
+  listener.listen(maddr, () => {
     console.log('[listener] Listening')
   })
 } else {
-  direct.dial(mh, { config: {} }, (err, conn) => {
+  direct.dial(maddr, { config: {} }, (err, conn) => {
     if (err) {
       console.log(`[dialer] Failed to open connection: ${err}`)
     }

integration/main.go

@@ -0,0 +1,88 @@
+package main
+
+import (
+	"context"
+	"flag"
+	"fmt"
+	"io/ioutil"
+
+	tpt "github.com/libp2p/go-libp2p-transport"
+	direct "github.com/libp2p/go-libp2p-webrtc-direct"
+	smux "github.com/libp2p/go-stream-muxer"
+	ma "github.com/multiformats/go-multiaddr"
+	"github.com/pions/webrtc"
+	mplex "github.com/whyrusleeping/go-smux-multiplex"
+)
+
+const listenFlag = "listen"
+
+func main() {
+	listening := flag.Bool(listenFlag, false, "Listen for incoming connections.")
+	flag.Parse()
+
+	maddr, err := ma.NewMultiaddr("/ip4/127.0.0.1/tcp/9090/http/p2p-webrtc-direct")
+	check(err)
+
+	transport := direct.NewTransport(
+		webrtc.RTCConfiguration{},
+		new(mplex.Transport),
+	)
+
+	if *listening {
+		list, err := transport.Listen(maddr)
+		check(err)
+		defer list.Close()
+		fmt.Println("[listener] Listening")
+
+		for {
+			c, err := list.Accept()
+			check(err)
+
+			fmt.Println("[listener] Got connection")
+
+			go handleConn(c)
+		}
+	} else {
+		ctx, cancel := context.WithCancel(context.Background())
+		defer cancel()
+
+		c, err := transport.Dial(ctx, maddr, "peerA")
+		check(err)
+		defer c.Close()
+		fmt.Println("[dialer] Opened connection")
+
+		s, err := c.OpenStream()
+		check(err)
+		fmt.Println("[dialer] Opened stream")
+
+		_, err = s.Write([]byte("hey, how is it going. I am the dialer"))
+		check(err)
+
+		err = s.Close()
+		check(err)
+	}
+}
+
+func handleConn(c tpt.Conn) {
+	for {
+		s, err := c.AcceptStream()
+		if err != nil {
+			return
+		}
+
+		fmt.Println("[listener] Got stream")
+		go handleStream(s)
+	}
+}
+func handleStream(s smux.Stream) {
+	b, err := ioutil.ReadAll(s)
+	check(err)
+	fmt.Println("[listener] Received:")
+	fmt.Println(string(b))
+}
+
+func check(err error) {
+	if err != nil {
+		panic(err)
+	}
+}