Updates for go 1.18

wrappers/packet/mtproto_frame.go

@@ -50,7 +50,7 @@ func (w *wrapperMtprotoFrame) Read() (conntypes.Packet, error) { // nolint: funl
 		buf.Reset()
 		sum.Reset()
 
-		if _, err := io.CopyN(writer, w.parent, 4); err != nil {
+		if _, err := io.CopyN(writer, w.parent, 4); err != nil { // nolint: gomnd
 			return nil, fmt.Errorf("cannot read frame padding: %w", err)
 		}
 
@@ -72,7 +72,7 @@ func (w *wrapperMtprotoFrame) Read() (conntypes.Packet, error) { // nolint: funl
 
 	buf.Reset()
 
-	if _, err := io.CopyN(writer, w.parent, int64(messageLength)-4-4); err != nil {
+	if _, err := io.CopyN(writer, w.parent, int64(messageLength)-4-4); err != nil { // nolint: gomnd
 		return nil, fmt.Errorf("cannot read the message frame: %w", err)
 	}
 
@@ -88,7 +88,7 @@ func (w *wrapperMtprotoFrame) Read() (conntypes.Packet, error) { // nolint: funl
 	buf.Reset()
 	// write to buf, not to writer. This is because we are going to fetch
 	// crc32 checksum.
-	if _, err := io.CopyN(buf, w.parent, 4); err != nil {
+	if _, err := io.CopyN(buf, w.parent, 4); err != nil { // nolint: gomnd
 		return nil, fmt.Errorf("cannot read checksum: %w", err)
 	}
 
@@ -109,7 +109,7 @@ func (w *wrapperMtprotoFrame) Read() (conntypes.Packet, error) { // nolint: funl
 }
 
 func (w *wrapperMtprotoFrame) Write(p conntypes.Packet) error {
-	messageLength := 4 + 4 + len(p) + 4
+	messageLength := 4 + 4 + len(p) + 4 // nolint: gomnd
 	paddingLength := (aes.BlockSize - messageLength%aes.BlockSize) % aes.BlockSize
 
 	buf := &bytes.Buffer{}
@@ -119,8 +119,8 @@ func (w *wrapperMtprotoFrame) Write(p conntypes.Packet) error {
 	buf.Write(p)
 
 	checksum := crc32.ChecksumIEEE(buf.Bytes())
-	binary.Write(buf, binary.LittleEndian, checksum) // nolint: errcheck
-	buf.Write(bytes.Repeat(mtprotoFramePadding, paddingLength/4))
+	binary.Write(buf, binary.LittleEndian, checksum)              // nolint: errcheck
+	buf.Write(bytes.Repeat(mtprotoFramePadding, paddingLength/4)) // nolint: gomnd
 
 	w.logger.Debugw("Write MTProto frame",
 		"length", len(p),

wrappers/packetack/client_abridged.go

@@ -39,9 +39,9 @@ func (w *wrapperClientAbridged) Read(acks *conntypes.ConnectionAcks) (conntypes.
 	}
 
 	if msgLength == clientAbridgedSmallPacketLength {
-		buf.Grow(3)
+		buf.Grow(3) // nolint: gomnd
 
-		if _, err := io.CopyN(&buf, w.parent, 3); err != nil {
+		if _, err := io.CopyN(&buf, w.parent, 3); err != nil { // nolint: gomnd
 			return nil, fmt.Errorf("cannot read correct message length: %w", err)
 		}
 
@@ -75,7 +75,7 @@ func (w *wrapperClientAbridged) Write(packet conntypes.Packet, acks *conntypes.C
 		return nil
 	}
 
-	packetLength := len(packet) / 4
+	packetLength := len(packet) / 4 // nolint: gomnd
 
 	switch {
 	case packetLength < clientAbridgedSmallPacketLength:

wrappers/packetack/client_intermediate.go

@@ -20,9 +20,9 @@ type wrapperClientIntermediate struct {
 func (w *wrapperClientIntermediate) Read(acks *conntypes.ConnectionAcks) (conntypes.Packet, error) {
 	buf := bytes.Buffer{}
 
-	buf.Grow(4)
+	buf.Grow(4) // nolint: gomnd
 
-	if _, err := io.CopyN(&buf, w.parent, 4); err != nil {
+	if _, err := io.CopyN(&buf, w.parent, 4); err != nil { // nolint: gomnd
 		return nil, fmt.Errorf("cannot read message length: %w", err)
 	}
 

wrappers/packetack/client_intermediate_secure.go

@@ -20,7 +20,7 @@ func (w *wrapperClientIntermediateSecure) Read(acks *conntypes.ConnectionAcks) (
 		return nil, err
 	}
 
-	length := len(data) - (len(data) % 4)
+	length := len(data) - (len(data) % 4) // nolint: gomnd
 
 	return data[:length], nil
 }
@@ -35,7 +35,7 @@ func (w *wrapperClientIntermediateSecure) Write(packet conntypes.Packet, acks *c
 	}
 
 	buf := &bytes.Buffer{}
-	paddingLength := rand.Intn(4) // nolint: gosec
+	paddingLength := rand.Intn(4) // nolint: gosec, gomnd
 
 	buf.Grow(4 + len(packet) + paddingLength)
 

wrappers/packetack/proxy.go

@@ -42,7 +42,7 @@ func (w *wrapperProxy) Write(packet conntypes.Packet, acks *conntypes.Connection
 	buf.Write(rpc.ProxyRequestProxyTag)
 	buf.WriteByte(byte(len(config.C.AdTag)))
 	buf.Write(config.C.AdTag)
-	buf.Write(make([]byte, (4-buf.Len()%4)%4))
+	buf.Write(make([]byte, (4-buf.Len()%4)%4)) // nolint: gomnd
 	buf.Grow(len(packet))
 	buf.Write(packet)
 

wrappers/stream/conn.go

@@ -93,9 +93,9 @@ func newConn(parent net.Conn,
 	connID conntypes.ConnID,
 	purpose connPurpose,
 ) conntypes.StreamReadWriteCloser {
-	localAddr := *parent.LocalAddr().(*net.TCPAddr)
+	localAddr := *parent.LocalAddr().(*net.TCPAddr) // nolint: forcetypeassert
 
-	if parent.RemoteAddr().(*net.TCPAddr).IP.To4() != nil {
+	if parent.RemoteAddr().(*net.TCPAddr).IP.To4() != nil { // nolint: forcetypeassert
 		if config.C.PublicIPv4.IP != nil {
 			localAddr.IP = config.C.PublicIPv4.IP
 		}
@@ -118,7 +118,7 @@ func newConn(parent net.Conn,
 		parent:     parent,
 		connID:     connID,
 		logger:     logger,
-		remoteAddr: parent.RemoteAddr().(*net.TCPAddr),
+		remoteAddr: parent.RemoteAddr().(*net.TCPAddr), // nolint: forcetypeassert
 		localAddr:  &localAddr,
 	}
 }