Updates for go 1.18

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)