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Code Issues Releases Wiki Activity

Retry a lookup in TCP mode after getting a reply with TC flag set

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This commit is contained in:
Michael Sawyer
2000-09-11 19:38:22 +00:00
parent 53df51bf45
commit e9429ff25a
1 changed files with 16 additions and 2 deletions
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18
bin/dig/dighost.c
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@@ -15,7 +15,7 @@
* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/* $Id: dighost.c,v 1.118 2000/08/28 05:06:18 marka Exp $ */
/* $Id: dighost.c,v 1.119 2000/09/11 19:38:22 mws Exp $ */
/*
* Notice to programmers: Do not use this code as an example of how to
@@ -1973,7 +1973,8 @@ recv_done(isc_task_t *task, isc_event_t *event) {
debug("before parse starts");
result = dns_message_parse(msg, b, ISC_TRUE);
if (result != ISC_R_SUCCESS) {
printf(";; Got bad packet:\n");
printf(";; Got bad packet: %s\n",
dns_result_totext(result));
hex_dump(b);
query->waiting_connect = ISC_FALSE;
if (!l->tcp_mode) {
@@ -1989,6 +1990,19 @@ recv_done(isc_task_t *task, isc_event_t *event) {
UNLOCK_LOOKUP;
return;
}
if ((msg->flags & DNS_MESSAGEFLAG_TC) != 0) {
printf(";; Truncated, retrying in TCP mode.\n");
n = requeue_lookup(l, ISC_TRUE);
n->tcp_mode = ISC_TRUE;
dns_message_destroy(&msg);
isc_event_free(&event);
clear_query(query);
cancel_lookup(l);
check_next_lookup(l);
UNLOCK_LOOKUP;
return;
}
if (key != NULL) {
result = dns_tsig_verify(&query->recvbuf, msg,
NULL, NULL);