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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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GPG key ID: 5CC908FDB71E12C2
10 changed files with 147 additions and 127 deletions
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5
lib/doh.c
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@ -901,6 +901,7 @@ UNITTEST void de_cleanup(struct dohentry *d)
CURLcode Curl_doh_is_resolved(struct Curl_easy *data,
struct Curl_dns_entry **dnsp)
{
struct connectdata *conn = data->conn;
CURLcode result;
struct dohdata *dohp = data->req.doh;
*dnsp = NULL; /* defaults to no response */
@ -909,7 +910,7 @@ CURLcode Curl_doh_is_resolved(struct Curl_easy *data,
if(!dohp->probe[DOH_PROBE_SLOT_IPADDR_V4].easy &&
!dohp->probe[DOH_PROBE_SLOT_IPADDR_V6].easy) {
failf(data, "Could not DoH-resolve: %s", data->state.async.hostname);
failf(data, "Could not DoH-resolve: %s", conn->resolve_async.hostname);
return CONN_IS_PROXIED(data->conn)?CURLE_COULDNT_RESOLVE_PROXY:
CURLE_COULDNT_RESOLVE_HOST;
}
@ -970,7 +971,7 @@ CURLcode Curl_doh_is_resolved(struct Curl_easy *data,
Curl_freeaddrinfo(ai);
}
else {
data->state.async.dns = dns;
conn->resolve_async.dns = dns;
*dnsp = dns;
result = CURLE_OK; /* address resolution OK */
}