curl/lib/cf-dns.h
Stefan Eissing bc40e09f63
lib: introduce Curl_peer
`struct Curl_peer` keeps information about a communication endpoint
together. It will replace `conn->host` and `conn->conn_to_host` and
proxyinfo host. It will also become part of `struct ssl_peer`.

It has a reference counter, so an instance can be shared between
connections and filters.

Elminiates `conn->host` and `conn->connect_to_host`, used in the
proxyinfo structures. Passed to DNS resolution and socks filters, etc.

Pass peer to http proxy and socks tunnel filters. Use peer in dns filter
and resolving. Make `Curl_peer` a member in the `struct ssl_peer`.

Add `docs/internals/PEERS.md` for documentation.

Closes #21472
2026-05-05 16:22:11 +02:00

72 lines
2.9 KiB
C

#ifndef HEADER_CURL_CF_DNS_H
#define HEADER_CURL_CF_DNS_H
/***************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
*
* This software is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
* are also available at https://curl.se/docs/copyright.html.
*
* You may opt to use, copy, modify, merge, publish, distribute and/or sell
* copies of the Software, and permit persons to whom the Software is
* furnished to do so, under the terms of the COPYING file.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
* SPDX-License-Identifier: curl
*
***************************************************************************/
#include "curl_setup.h"
struct Curl_easy;
struct connectdata;
struct Curl_dns_entry;
struct Curl_addrinfo;
struct Curl_peer;
CURLcode Curl_cf_dns_add(struct Curl_easy *data,
struct connectdata *conn,
int sockindex,
struct Curl_peer *peer,
uint8_t dns_queries,
uint8_t transport,
struct Curl_dns_entry *dns);
CURLcode Curl_cf_dns_insert_after(struct Curl_cfilter *cf_at,
struct Curl_easy *data,
uint8_t dns_queries,
struct Curl_peer *peer,
uint8_t transport,
bool complete_resolve);
CURLcode Curl_conn_dns_result(struct connectdata *conn, int sockindex);
const struct Curl_addrinfo *Curl_conn_dns_get_ai(struct Curl_easy *data,
int sockindex,
int ai_family,
unsigned int index);
const struct Curl_addrinfo *Curl_cf_dns_get_ai(struct Curl_cfilter *cf,
struct Curl_easy *data,
int ai_family,
unsigned int index);
#ifdef USE_HTTPSRR
const struct Curl_https_rrinfo *Curl_conn_dns_get_https(struct Curl_easy *data,
int sockindex);
bool Curl_conn_dns_resolved_https(struct Curl_easy *data, int sockindex);
#else
#define Curl_conn_dns_get_https(a, b) NULL
#define Curl_conn_dns_resolved_https(a, b) TRUE
#endif
extern struct Curl_cftype Curl_cft_dns;
#endif /* HEADER_CURL_CF_DNS_H */