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3949. [experimental] Experimental support for draft-andrews-edns1 by sending

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EDNS(1) queries (define DRAFT_ANDREWS_EDNS1 when
                        building).  Add support for limiting the EDNS version
                        advertised to servers: server { edns-version 0; };
                        Log the EDNS version received in the query log.
                        [RT #35864]
This commit is contained in:
Mark Andrews
2014-09-10 15:31:40 +10:00
parent 52131a8351
commit 947cf282a7
28 changed files with 317 additions and 33 deletions
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9
bin/named/server.c
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@@ -1225,6 +1225,15 @@ configure_peer(const cfg_obj_t *cpeer, isc_mem_t *mctx, dns_peer_t **peerp) {
CHECK(dns_peer_setudpsize(peer, (isc_uint16_t)udpsize));
}
obj = NULL;
(void)cfg_map_get(cpeer, "edns-version", &obj);
if (obj != NULL) {
isc_uint32_t ednsversion = cfg_obj_asuint32(obj);
if (ednsversion > 255)
ednsversion = 255;
CHECK(dns_peer_setednsversion(peer, (isc_uint8_t)ednsversion));
}
obj = NULL;
(void)cfg_map_get(cpeer, "max-udp-size", &obj);
if (obj != NULL) {