url: Add option CURLOPT_RESOLVER_START_FUNCTION

- Add new option CURLOPT_RESOLVER_START_FUNCTION to set a callback that
  will be called every time before a new resolve request is started
  (ie before a host is resolved) with a pointer to backend-specific
  resolver data. Currently this is only useful for ares.

- Add new option CURLOPT_RESOLVER_START_DATA to set a user pointer to
  pass to the resolver start callback.

Closes https://github.com/curl/curl/pull/2311
This commit is contained in:
Francisco Sedano 2018-02-14 17:20:43 +00:00 committed by Jay Satiro
parent dd027c80fe
commit 23713645d4
16 changed files with 379 additions and 3 deletions

View file

@ -132,6 +132,7 @@ static curl_chunk_end_callback chunk_end_cb;
static curl_fnmatch_callback fnmatch_cb;
static curl_closesocket_callback closesocketcb;
static curl_xferinfo_callback xferinfocb;
static curl_resolver_start_callback resolver_start_cb;
int test(char *URL)
{