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ares: better error return on timeouts 

Assisted-by: Ray Satiro

Bug: https://curl.haxx.se/mail/lib-2017-03/0009.html
This commit is contained in:
Daniel Stenberg 2017-03-06 22:45:10 +01:00
parent f023f258fa
commit bfaab3180c
1 changed files with 9 additions and 12 deletions
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21
lib/asyn-ares.c
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@ -368,7 +368,7 @@ CURLcode Curl_resolver_wait_resolv(struct connectdata *conn,
timeout = CURL_TIMEOUT_RESOLVE * 1000; /* default name resolve timeout */
/* Wait for the name resolve query to complete. */
for(;;) {
while(!result) {
struct timeval *tvp, tv, store;
long timediff;
int itimeout;
@ -390,28 +390,25 @@ CURLcode Curl_resolver_wait_resolv(struct connectdata *conn,
timeout_ms = 1000;
waitperform(conn, timeout_ms);
Curl_resolver_is_resolved(conn, &temp_entry);
result = Curl_resolver_is_resolved(conn, &temp_entry);
if(conn->async.done)
if(result || conn->async.done)
break;
if(Curl_pgrsUpdate(conn)) {
if(Curl_pgrsUpdate(conn))
result = CURLE_ABORTED_BY_CALLBACK;
timeout = -1; /* trigger the cancel below */
}
else {
struct timeval now2 = Curl_tvnow();
timediff = Curl_tvdiff(now2, now); /* spent time */
timeout -= timediff?timediff:1; /* always deduct at least 1 */
now = now2; /* for next loop */
}
if(timeout < 0) {
/* our timeout, so we cancel the ares operation */
ares_cancel((ares_channel)data->state.resolver);
break;
}
if(timeout < 0)
result = CURLE_OPERATION_TIMEDOUT;
}
if(result)
/* failure, so we cancel the ares operation */
ares_cancel((ares_channel)data->state.resolver);
/* Operation complete, if the lookup was successful we now have the entry
in the cache. */