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begin touching up a DNS Client implementation; internal.GetIP/SetIP refactor

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soypat
2025-06-21 01:29:38 -03:00
parent 48f1fa9103
commit 1fcde05284
9 changed files with 209 additions and 29 deletions
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dhcpv4/server.go
+9 -6
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@@ -203,7 +203,10 @@ func (sv *Server) Encapsulate(carrierData []byte, frameOffset int) (int, error)
copy(dfrm.CHAddrAs6()[:], client.hwaddr[:])
dfrm.SetMagicCookie(MagicCookie)
if carrierIsIP {
internal.SetIPDestinationAddr(carrierData, 0, client.addr[:])
err = internal.SetIPAddrs(carrierData, 0, sv.siaddr[:], client.addr[:])
if err != nil {
return 0, err
}
}
client.state = futureState
@@ -227,13 +230,13 @@ func (sv *Server) getClientByIP(ip [4]byte) (serverEntry, [36]byte, bool) {
return serverEntry{}, [36]byte{}, false
}
func getSrcIPPort(ipCarrier []byte) (addr []byte, port uint16, err error) {
addr, _, off, err := internal.GetIPSourceAddr(ipCarrier)
func getSrcIPPort(ipCarrier []byte) (srcaddr []byte, port uint16, err error) {
srcaddr, _, _, off, err := internal.GetIPAddr(ipCarrier)
if err != nil {
return addr, port, err
return srcaddr, port, err
} else if len(ipCarrier[off:]) < 2 {
return addr, port, errors.New("getSrcIPPort got only IP layer")
return srcaddr, port, errors.New("getSrcIPPort got only IP layer")
}
port = binary.BigEndian.Uint16(ipCarrier[off:]) // TCP and UDP share same port offsets.
return addr, port, nil
return srcaddr, port, nil
}