doh: Fix sharing user's resolve list with DOH handles

- Share the shared object from the user's easy handle with the DOH
  handles.

Prior to this change if the user had set a shared object with shared
cached DNS (CURL_LOCK_DATA_DNS) for their easy handle then that wasn't
used by any associated DOH handles, since they used the multi's default
hostcache.

This change means all the handles now use the same hostcache, which is
either the shared hostcache from the user created shared object if it
exists or if not then the multi's default hostcache.

Reported-by: Manuj Bhatia

Fixes https://github.com/curl/curl/issues/6589
Closes https://github.com/curl/curl/pull/6607
This commit is contained in:
Jay Satiro 2021-02-15 00:25:59 -05:00
parent 723c0e75fa
commit e68ee39f3d

View File

@ -284,6 +284,7 @@ static CURLcode dohprobe(struct Curl_easy *data,
ERROR_CHECK_SETOPT(CURLOPT_PROTOCOLS, CURLPROTO_HTTP|CURLPROTO_HTTPS);
#endif
ERROR_CHECK_SETOPT(CURLOPT_TIMEOUT_MS, (long)timeout_ms);
ERROR_CHECK_SETOPT(CURLOPT_SHARE, data->share);
if(data->set.verbose)
ERROR_CHECK_SETOPT(CURLOPT_VERBOSE, 1L);
if(data->set.no_signal)