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MINOR: dns: new bitmasks to use against DNS flags

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Current DNS client code implementation doesn't take care of response
flags setup by the server.
This patch introduces a couple of bitmasks one can use to retrieve the
truncated flag and the reply code available in the 2-bytes flag field.
This commit is contained in:
Baptiste Assmann 2015-09-02 21:52:37 +02:00 committed by Willy Tarreau
parent 01daef3162
commit 042d0a1f8c
1 changed files with 4 additions and 0 deletions
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4
include/types/dns.h
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@ -51,6 +51,10 @@
#define DNS_RCODE_NX_DOMAIN 3 /* non existent domain */ #define DNS_RCODE_NX_DOMAIN 3 /* non existent domain */
#define DNS_RCODE_REFUSED 5 /* query refused */ #define DNS_RCODE_REFUSED 5 /* query refused */
/* dns flags masks */
#define DNS_FLAG_TRUNCATED 0x0200 /* mask for truncated flag */
#define DNS_FLAG_REPLYCODE 0x000F /* mask for reply code */
/* DNS request or response header structure */ /* DNS request or response header structure */
struct dns_header { struct dns_header {
unsigned short id:16; /* identifier */ unsigned short id:16; /* identifier */