INNER CODE UNIT · Go

tcpPair

docker/compose · relay/main_test.go:56

func tcpPair(t *testing.T) (net.Conn, net.Conn) {
	t.Helper()
	ln, err := net.Listen("tcp", "127.0.0.1:0")
	if err != nil {
		t.Fatal(err)
	}
	defer func() { _ = ln.Close() }()
	type accepted struct {
		conn net.Conn
		err  error
	}
	ch := make(chan accepted, 1)
	go func() {
		conn, err := ln.Accept()
		ch <- accepted{conn, err}
	}()
	client, err := net.Dial("tcp", ln.Addr().String())
	if err != nil {

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