header,v1: wrap address handling errors

Author: pires

v1.go

@@ -216,7 +216,10 @@ func (header *Header) formatVersion1() ([]byte, error) {
 
 func parseV1PortNumber(portStr string) (int, error) {
 	port, err := strconv.Atoi(portStr)
-	if err != nil || port < 0 || port > 65535 {
+	if err != nil {
+		return 0, fmt.Errorf("%w: %w", ErrInvalidPortNumber, err)
+	}
+	if port < 0 || port > 65535 {
 		return 0, ErrInvalidPortNumber
 	}
 	return port, nil
@@ -225,7 +228,7 @@ func parseV1PortNumber(portStr string) (int, error) {
 func parseV1IPAddress(protocol AddressFamilyAndProtocol, addrStr string) (net.IP, error) {
 	addr, err := netip.ParseAddr(addrStr)
 	if err != nil {
-		return nil, ErrInvalidAddress
+		return nil, fmt.Errorf("%w: %w", ErrInvalidAddress, err)
 	}
 
 	switch protocol {