}
	trace := httptrace.ContextClientTrace(ctx)
	wrapErr := func(err error) error {
		if cm.proxyURL != nil {
			// Return a typed error, per Issue 16997
			return &net.OpError{Op: "proxyconnect", Net: "tcp", Err: err}
		}
		return err
	}
	if cm.scheme() == "https" && t.hasCustomTLSDialer() {
		var err error
		pconn.conn, err = t.customDialTLS(ctx, "tcp", cm.addr())
		if err != nil {

		t.Fatalf("got %T, want *url.Error", err)
	}
	oe, ok := uerr.Err.(*net.OpError)
	if !ok {
		t.Fatalf("url.Error.Err =  %T; want *net.OpError", uerr.Err)
	}
	want := &net.OpError{
		Op:  "proxyconnect",
		Net: "tcp",
		Err: errDial, // original error, unwrapped.
	}
	if !reflect.DeepEqual(oe, want) {
		t.Errorf("Got error %#v; want %#v", oe, want)
	}
}

	procWSAStartup                         = modws2_32.NewProc("WSAStartup")
	procbind                               = modws2_32.NewProc("bind")
	procclosesocket                        = modws2_32.NewProc("closesocket")
	procconnect                            = modws2_32.NewProc("connect")
	procgethostbyname                      = modws2_32.NewProc("gethostbyname")
	procgetpeername                        = modws2_32.NewProc("getpeername")

	procbind                                                 = modws2_32.NewProc("bind")
	procclosesocket                                          = modws2_32.NewProc("closesocket")
	procconnect                                              = modws2_32.NewProc("connect")
	procgethostbyname                                        = modws2_32.NewProc("gethostbyname")