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minor dhcp changes to better match seqs exchange

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soypat
2025-07-01 18:38:12 -03:00
parent 5cea9727f0
commit 234d3835a0
3 changed files with 32 additions and 6 deletions
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dhcpv4/frame.go
+4 -2
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@@ -57,9 +57,11 @@ func (frm Frame) SetHardware(Type, Len, Ops uint8) {
frm.buf[1], frm.buf[2], frm.buf[3] = Type, Len, Ops
}
// XID is the transaction ID. Is unique and constant for a DHCP request/response exchange of packets.
func (frm Frame) XID() uint32 { return binary.BigEndian.Uint32(frm.buf[4:8]) }
func (frm Frame) SetXID(xid uint32) { binary.BigEndian.PutUint32(frm.buf[4:8], xid) }
// Secs is seconds elapsed.
func (frm Frame) Secs() uint16 { return binary.BigEndian.Uint16(frm.buf[8:10]) }
func (frm Frame) SetSecs(secs uint16) { binary.BigEndian.PutUint16(frm.buf[8:10], secs) }
@@ -72,7 +74,7 @@ func (frm Frame) CIAddr() *[4]byte {
return (*[4]byte)(frm.buf[12:16])
}
// YIAddr is the IP address offered by the server to the client.
// YIAddr is the IP address offered by the server to the client. Your (client) IP Address.
func (frm Frame) YIAddr() *[4]byte {
return (*[4]byte)(frm.buf[16:20])
}
@@ -83,7 +85,7 @@ func (frm Frame) SIAddr() *[4]byte {
return (*[4]byte)(frm.buf[20:24])
}
// GIAddr is the gateway IP address.
// GIAddr is the gateway IP address. Is also known as the Relay Agent IP Address.
func (frm Frame) GIAddr() *[4]byte {
return (*[4]byte)(frm.buf[24:28])
}