Add mtproto handshake

telegram/base.go

@@ -17,12 +17,17 @@ const telegramDialTimeout = 10 * time.Second
 type baseTelegram struct {
 	dialer net.Dialer
 
+	secret      []byte
 	v4DefaultDC conntypes.DC
 	V6DefaultDC conntypes.DC
 	v4Addresses map[conntypes.DC][]string
 	v6Addresses map[conntypes.DC][]string
 }
 
+func (b *baseTelegram) Secret() []byte {
+	return b.secret
+}
+
 func (b *baseTelegram) dialToAddress(ctx context.Context,
 	cancel context.CancelFunc,
 	addr string) (wrappers.StreamReadWriteCloser, error) {

telegram/interfaces.go

@@ -12,4 +12,5 @@ type Telegram interface {
 		context.CancelFunc,
 		conntypes.DC,
 		conntypes.ConnectionProtocol) (wrappers.StreamReadWriteCloser, error)
+	Secret() []byte
 }

telegram/middle.go

@@ -21,7 +21,6 @@ var Middle = NewMiddleTelegram()
 type middleTelegram struct {
 	baseTelegram
 
-	secret []byte
 	mutex  sync.RWMutex
 }