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dns/dnsmessage: add AD and CD bits support #136

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dns/dnsmessage: add AD and CD bits support #136

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52e39ab
add AD flag
mateusz834 May 25, 2022
c5ef8a5
Add CD bit support
mateusz834 May 25, 2022
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12 changes: 12 additions & 0 deletions dns/dnsmessage/message.go
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Original file line number Diff line number Diff line change
Expand Up @@ -317,6 +317,8 @@ type Header struct {
Truncated bool
RecursionDesired bool
RecursionAvailable bool
AuthenticData bool
CheckingDisabled bool
RCode RCode
}

Expand All @@ -338,6 +340,12 @@ func (m *Header) pack() (id uint16, bits uint16) {
if m.Response {
bits |= headerBitQR
}
if m.AuthenticData {
bits |= headerBitAD
}
if m.CheckingDisabled {
bits |= headerBitCD
}
return
}

Expand Down Expand Up @@ -379,6 +387,8 @@ const (
headerBitTC = 1 << 9 // truncated
headerBitRD = 1 << 8 // recursion desired
headerBitRA = 1 << 7 // recursion available
headerBitAD = 1 << 5 // authentic data
headerBitCD = 1 << 4 // checking disabled
)

var sectionNames = map[section]string{
Expand Down Expand Up @@ -456,6 +466,8 @@ func (h *header) header() Header {
Truncated: (h.bits & headerBitTC) != 0,
RecursionDesired: (h.bits & headerBitRD) != 0,
RecursionAvailable: (h.bits & headerBitRA) != 0,
AuthenticData: (h.bits & headerBitAD) != 0,
CheckingDisabled: (h.bits & headerBitCD) != 0,
RCode: RCode(h.bits & 0xF),
}
}
Expand Down