curl/lib/httpsrr.h
Stefan Eissing 809dda3a37
Happy Eyeballs: add resolution time delay
HEv3 describes conditions on when first connect attempts shall be
started.
https://www.ietf.org/archive/id/draft-ietf-happy-happyeyeballs-v3-01.html
Chapter 4.2

libcurl now waits 50ms for AAAA and HTTPS results (when requested) to
return before continuing with the connect.

Added HTTPS-RR to the "was resolved" information info message. Changed
logging of HTTPS-RR to a one-liner with RFC 9460 like formatting. This
way the user can see if/what was resolved and used in connecting.

Closes #21354
2026-04-20 23:47:49 +02:00

104 lines
3.4 KiB
C

#ifndef HEADER_CURL_HTTPSRR_H
#define HEADER_CURL_HTTPSRR_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"
#ifdef USE_ARES
#include <ares.h>
#endif
#ifdef USE_HTTPSRR
#define CURL_MAXLEN_host_name 253
#define MAX_HTTPSRR_ALPNS 4
struct Curl_easy;
struct dynbuf;
struct Curl_https_rrinfo {
char *rrname; /* if NULL, the same as the URL hostname */
/*
* Fields from HTTPS RR. The only mandatory fields are priority and target.
* See https://datatracker.ietf.org/doc/html/rfc9460#section-14.3.2
*/
char *target;
unsigned char *ipv4hints; /* keytag = 4 */
size_t ipv4hints_len;
unsigned char *echconfiglist; /* keytag = 5 */
size_t echconfiglist_len;
unsigned char *ipv6hints; /* keytag = 6 */
size_t ipv6hints_len;
unsigned char alpns[MAX_HTTPSRR_ALPNS]; /* keytag = 1 */
/* store parsed alpnid entries in the array, end with ALPN_none */
uint16_t port; /* -1 means not set */
uint16_t priority;
BIT(no_def_alpn); /* keytag = 2 */
BIT(mandatory); /* keytag = 0 */
BIT(port_set); /* port value has been assigned */
BIT(complete); /* values have been successfully assigned */
};
CURLcode Curl_httpsrr_set(struct Curl_https_rrinfo *rr,
uint16_t rrkey, const uint8_t *val, size_t vlen);
struct Curl_https_rrinfo *Curl_httpsrr_dup_move(
struct Curl_https_rrinfo *rrinfo);
void Curl_httpsrr_cleanup(struct Curl_https_rrinfo *rrinfo);
/* TRUE if the record is applicable to the transfer and its connection. */
bool Curl_httpsrr_applicable(struct Curl_easy *data,
const struct Curl_https_rrinfo *rr);
/*
* Code points for DNS wire format SvcParams as per RFC 9460
*/
#define HTTPS_RR_CODE_MANDATORY 0x00
#define HTTPS_RR_CODE_ALPN 0x01
#define HTTPS_RR_CODE_NO_DEF_ALPN 0x02
#define HTTPS_RR_CODE_PORT 0x03
#define HTTPS_RR_CODE_IPV4 0x04
#define HTTPS_RR_CODE_ECH 0x05
#define HTTPS_RR_CODE_IPV6 0x06
#ifdef USE_ARES
CURLcode Curl_httpsrr_from_ares(const ares_dns_record_t *dnsrec,
struct Curl_https_rrinfo *hinfo);
#endif /* USE_ARES */
#ifdef CURLVERBOSE
CURLcode Curl_httpsrr_print(struct dynbuf *tmp,
struct Curl_https_rrinfo *rr);
void Curl_httpsrr_trace(struct Curl_easy *data,
struct Curl_https_rrinfo *rr);
#else
#define Curl_httpsrr_trace(a, b) Curl_nop_stmt
#endif
#endif /* USE_HTTPSRR */
#endif /* HEADER_CURL_HTTPSRR_H */