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ot::Dns::OptRecord class
Syntax
class OptRecord : public ResourceRecord
{
public:
static constexpr uint16_t kType = kTypeOpt;
void Init(void)
{
SetType(kTypeOpt);
SetTtl(0);
}
uint16_t GetUdpPayloadSize(void) const { return GetClass(); }
void SetUdpPayloadSize(uint16_t aPayloadSize) { SetClass(aPayloadSize); }
uint8_t GetExtendedResponseCode(void) const { return GetTtlByteAt(kExtRCodeByteIndex); }
void SetExtendedResponseCode(uint8_t aExtendedResponse) { GetTtlByteAt(kExtRCodeByteIndex) = aExtendedResponse; }
uint8_t GetVersion(void) const { return GetTtlByteAt(kVersionByteIndex); }
void SetVersion(uint8_t aVersion) { GetTtlByteAt(kVersionByteIndex) = aVersion; }
bool IsDnsSecurityFlagSet(void) const { return (GetTtlByteAt(kFlagByteIndex) & kDnsSecFlag) != 0; }
void ClearDnsSecurityFlag(void) { GetTtlByteAt(kFlagByteIndex) &= ~kDnsSecFlag; }
void SetDnsSecurityFlag(void) { GetTtlByteAt(kFlagByteIndex) |= kDnsSecFlag; }
private:
static constexpr uint8_t kExtRCodeByteIndex = 0;
static constexpr uint8_t kVersionByteIndex = 1;
static constexpr uint8_t kFlagByteIndex = 2;
static constexpr uint8_t kDnsSecFlag = 1 << 7;
uint8_t GetTtlByteAt(uint8_t aIndex) const { return reinterpret_cast<const uint8_t *>(&mTtl)[aIndex]; }
uint8_t &GetTtlByteAt(uint8_t aIndex) { return reinterpret_cast<uint8_t *>(&mTtl)[aIndex]; }
};
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