resolved: don't let EDNS0 OPT dgram size affect TCP

Fixes: #11884
2019-03-13 19:34:05 +01:00
parent aa11cab98c
commit acd74d61d2
1 changed files with 3 additions and 3 deletions
@@ -119,12 +119,12 @@ static inline uint16_t DNS_PACKET_PAYLOAD_SIZE_MAX(DnsPacket *p) {

        /* Returns the advertised maximum size for replies, or the DNS default if there's nothing defined. */

+        if (p->ipproto == IPPROTO_TCP) /* we ignore EDNS(0) size data on TCP, like everybody else */
+                return DNS_PACKET_SIZE_MAX;
+
        if (p->opt)
                return MAX(DNS_PACKET_UNICAST_SIZE_MAX, p->opt->key->class);

-        if (p->ipproto == IPPROTO_TCP)
-                return DNS_PACKET_SIZE_MAX;
-
        return DNS_PACKET_UNICAST_SIZE_MAX;
 }