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urldata: move async resolver state from easy handle to connectdata

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- resolving is done for a connection, not for every transfer
- save create/dup/free of a cares channel for each transfer
- check values of setopt calls against a local channel if no
  connection has been attached yet, when needed.

Closes #12198
This commit is contained in:
Stefan Eissing 2023-10-25 12:31:34 +02:00 • committed by Daniel Stenberg
parent 910f740ce2
commit 56a4db2e4e
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10 changed files with 147 additions and 127 deletions
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27
lib/easy.c
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@ -968,33 +968,6 @@ struct Curl_easy *curl_easy_duphandle(struct Curl_easy *data)
(void)Curl_hsts_loadcb(outcurl, outcurl->hsts);
}
#endif
/* Clone the resolver handle, if present, for the new handle */
if(Curl_resolver_duphandle(outcurl,
&outcurl->state.async.resolver,
data->state.async.resolver))
goto fail;
#ifdef USE_ARES
{
CURLcode rc;
rc = Curl_set_dns_servers(outcurl, data->set.str[STRING_DNS_SERVERS]);
if(rc && rc != CURLE_NOT_BUILT_IN)
goto fail;
rc = Curl_set_dns_interface(outcurl, data->set.str[STRING_DNS_INTERFACE]);
if(rc && rc != CURLE_NOT_BUILT_IN)
goto fail;
rc = Curl_set_dns_local_ip4(outcurl, data->set.str[STRING_DNS_LOCAL_IP4]);
if(rc && rc != CURLE_NOT_BUILT_IN)
goto fail;
rc = Curl_set_dns_local_ip6(outcurl, data->set.str[STRING_DNS_LOCAL_IP6]);
if(rc && rc != CURLE_NOT_BUILT_IN)
goto fail;
}
#endif /* USE_ARES */
Curl_initinfo(outcurl);