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push last night work

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soypat
2025-06-11 10:11:51 -03:00
parent 6b511999d1
commit 63cf2e2669
4 changed files with 118 additions and 18 deletions
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udp/frame.go
+15
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@@ -79,6 +79,21 @@ func (ufrm Frame) Payload() []byte {
return ufrm.buf[sizeHeader:l]
}
func (ufrm Frame) CRCWriteIPv4(crc *lneto.CRC791) {
crc.AddUint16(ufrm.Length())
crc.AddUint16(ufrm.SourcePort())
crc.AddUint16(ufrm.DestinationPort())
crc.AddUint16(ufrm.Length()) // Length double tap for IPv4.
crc.Write(ufrm.Payload())
}
func (ufrm Frame) CRCWriteIPv6(crc *lneto.CRC791) {
crc.AddUint16(ufrm.SourcePort())
crc.AddUint16(ufrm.DestinationPort())
crc.AddUint16(ufrm.Length())
crc.Write(ufrm.Payload())
}
// func (ufrm Frame) CalculateIPv4Checksum(ifrm IPv4Frame) uint16 {
// var crc lneto.CRC791
// ifrm.crcWriteUDPPseudo(&crc)