tests: Dial + Listen

net/net_test.go

 package net
+
+import (
+	"bytes"
+	"net"
+	"sync"
+	"testing"
+
+	ma "github.com/jbenet/go-multiaddr"
+)
+
+func newMultiaddr(t *testing.T, m string) ma.Multiaddr {
+	maddr, err := ma.NewMultiaddr(m)
+	if err != nil {
+		t.Fatalf("failed to construct multiaddr: %s", m)
+	}
+	return maddr
+}
+
+func TestDial(t *testing.T) {
+
+	listener, err := net.Listen("tcp", "127.0.0.1:4321")
+	if err != nil {
+		t.Fatal("failed to listen")
+	}
+
+	var wg sync.WaitGroup
+	wg.Add(1)
+	go func() {
+
+		cB, err := listener.Accept()
+		if err != nil {
+			t.Fatal("failed to accept")
+		}
+
+		// echo out
+		buf := make([]byte, 1024)
+		for {
+			_, err := cB.Read(buf)
+			if err != nil {
+				break
+			}
+			cB.Write(buf)
+		}
+
+		wg.Done()
+	}()
+
+	maddr := newMultiaddr(t, "/ip4/127.0.0.1/tcp/4321")
+	cA, err := Dial(maddr)
+	if err != nil {
+		t.Fatal("failed to dial")
+	}
+
+	buf := make([]byte, 1024)
+	if _, err := cA.Write([]byte("beep boop")); err != nil {
+		t.Fatal("failed to write:", err)
+	}
+
+	if _, err := cA.Read(buf); err != nil {
+		t.Fatal("failed to read:", buf, err)
+	}
+
+	if !bytes.Equal(buf[:9], []byte("beep boop")) {
+		t.Fatal("failed to echo:", buf)
+	}
+
+	maddr2 := cA.RemoteMultiaddr()
+	if !maddr2.Equal(maddr) {
+		t.Fatal("remote multiaddr not equal:", maddr, maddr2)
+	}
+
+	cA.Close()
+	wg.Wait()
+}
+
+func TestListen(t *testing.T) {
+
+	maddr := newMultiaddr(t, "/ip4/127.0.0.1/tcp/4322")
+	listener, err := Listen(maddr)
+	if err != nil {
+		t.Fatal("failed to listen")
+	}
+
+	var wg sync.WaitGroup
+	wg.Add(1)
+	go func() {
+
+		cB, err := listener.Accept()
+		if err != nil {
+			t.Fatal("failed to accept")
+		}
+
+		if !cB.LocalMultiaddr().Equal(maddr) {
+			t.Fatal("local multiaddr not equal:", maddr, cB.LocalMultiaddr())
+		}
+
+		// echo out
+		buf := make([]byte, 1024)
+		for {
+			_, err := cB.Read(buf)
+			if err != nil {
+				break
+			}
+			cB.Write(buf)
+		}
+
+		wg.Done()
+	}()
+
+	cA, err := net.Dial("tcp", "127.0.0.1:4322")
+	if err != nil {
+		t.Fatal("failed to dial")
+	}
+
+	buf := make([]byte, 1024)
+	if _, err := cA.Write([]byte("beep boop")); err != nil {
+		t.Fatal("failed to write:", err)
+	}
+
+	if _, err := cA.Read(buf); err != nil {
+		t.Fatal("failed to read:", buf, err)
+	}
+
+	if !bytes.Equal(buf[:9], []byte("beep boop")) {
+		t.Fatal("failed to echo:", buf)
+	}
+
+	maddr2, err := FromNetAddr(cA.RemoteAddr())
+	if err != nil {
+		t.Fatal("failed to convert", err)
+	}
+	if !maddr2.Equal(maddr) {
+		t.Fatal("remote multiaddr not equal:", maddr, maddr2)
+	}
+
+	cA.Close()
+	wg.Wait()
+}
+
+func TestListenAndDial(t *testing.T) {
+
+	maddr := newMultiaddr(t, "/ip4/127.0.0.1/tcp/4323")
+	listener, err := Listen(maddr)
+	if err != nil {
+		t.Fatal("failed to listen")
+	}
+
+	var wg sync.WaitGroup
+	wg.Add(1)
+	go func() {
+
+		cB, err := listener.Accept()
+		if err != nil {
+			t.Fatal("failed to accept")
+		}
+
+		if !cB.LocalMultiaddr().Equal(maddr) {
+			t.Fatal("local multiaddr not equal:", maddr, cB.LocalMultiaddr())
+		}
+
+		// echo out
+		buf := make([]byte, 1024)
+		for {
+			_, err := cB.Read(buf)
+			if err != nil {
+				break
+			}
+			cB.Write(buf)
+		}
+
+		wg.Done()
+	}()
+
+	cA, err := Dial(newMultiaddr(t, "/ip4/127.0.0.1/tcp/4323"))
+	if err != nil {
+		t.Fatal("failed to dial")
+	}
+
+	buf := make([]byte, 1024)
+	if _, err := cA.Write([]byte("beep boop")); err != nil {
+		t.Fatal("failed to write:", err)
+	}
+
+	if _, err := cA.Read(buf); err != nil {
+		t.Fatal("failed to read:", buf, err)
+	}
+
+	if !bytes.Equal(buf[:9], []byte("beep boop")) {
+		t.Fatal("failed to echo:", buf)
+	}
+
+	maddr2 := cA.RemoteMultiaddr()
+	if !maddr2.Equal(maddr) {
+		t.Fatal("remote multiaddr not equal:", maddr, maddr2)
+	}
+
+	cA.Close()
+	wg.Wait()
+}