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evdns: fix EVDNS_BASE_DISABLE_WHEN_INACTIVE in case retransmit/retry

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This commit is contained in:
Azat Khuzhin 2014-04-10 19:30:47 +04:00
parent 07b5e45ba5
commit 74d0eee89b
1 changed files with 14 additions and 6 deletions
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20
evdns.c
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@ -541,6 +541,17 @@ nameserver_probe_failed(struct nameserver *const ns) {
}
}
static void
request_swap_ns(struct request *req, struct nameserver *ns) {
if (ns && req->ns != ns) {
EVUTIL_ASSERT(req->ns->requests_inflight > 0);
req->ns->requests_inflight--;
ns->requests_inflight++;
req->ns = ns;
}
}
/* called when a nameserver has been deemed to have failed. For example, too */
/* many packets have timed out etc */
static void
@ -595,7 +606,7 @@ nameserver_failed(struct nameserver *const ns, const char *msg) {
if (req->tx_count == 0 && req->ns == ns) {
/* still waiting to go out, can be moved */
/* to another server */
req->ns = nameserver_pick(base);
request_swap_ns(req, nameserver_pick(base));
}
req = req->next;
} while (req != started_at);
@ -708,7 +719,7 @@ request_reissue(struct request *req) {
/* the last nameserver should have been marked as failing */
/* by the caller of this function, therefore pick will try */
/* not to return it */
req->ns = nameserver_pick(req->base);
request_swap_ns(req, nameserver_pick(req->base));
if (req->ns == last_ns) {
/* ... but pick did return it */
/* not a lot of point in trying again with the */
@ -2173,13 +2184,10 @@ evdns_request_timeout_callback(evutil_socket_t fd, short events, void *arg) {
request_finished(req, &REQ_HEAD(req->base, req->trans_id), 1);
} else {
/* retransmit it */
struct nameserver *new_ns;
log(EVDNS_LOG_DEBUG, "Retransmitting request %p; tx_count==%d",
arg, req->tx_count);
(void) evtimer_del(&req->timeout_event);
new_ns = nameserver_pick(base);
if (new_ns)
req->ns = new_ns;
request_swap_ns(req, nameserver_pick(base));
evdns_request_transmit(req);
}
EVDNS_UNLOCK(base);