Author :
Nathan French
Date :
2019-02-07 11:43:14
Hash :fb134939 Message :Added DNS header mask definitions.
Currently, we do a lot of data munging with manual hex. This is ugly
and can lead to bugs. I defined the following:
_QR_MASK 0x8000U
_OP_MASK 0x7800U
_AA_MASK 0x0400U
_TC_MASK 0x0200U
_RD_MASK 0x0100U
_RA_MASK 0x0080U
_Z_MASK 0x0040U
_AD_MASK 0x0020U
_CD_MASK 0x0010U
_RCODE_MASK 0x000fU
So that we can more easily twiddle flags.
v2: make evdns flag masks unsigned literal
Closes: #756 (cherry-picked)
Nathan French