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567803db79
Make cf-https-connect work async correctly: - only start first baller when at least one A/AAAA address is available - select first connect attempt after that with HTTPS-RR info there or not. - select second connect attempt only when HTTPS-RR is resolved (may have resolved to "not known") and select possible ALPN from things known by then. May not select any second attempt when first already covers everything. This means when the HTTPS-RR is known at/before the first address is resolved, everything behaves as before. When the HTTPS-RR is late, a first connection attempt will have been started. Any ALPN preference from the HTTPS-RR that is not already ongoing will then start the second attempt. For HTTPS-RRs that recommend 2 or more ALPNs, the first will always be attempted: either it is already ongong or it will be the ALPN for the second attempt. The 2nd ALPN recommendation from HTTPS-RR *may* be honored or not, depending on what is already selected. The difference in behaviour between early/late HTTPS-RR resolve cannot be helped - unless we do not perform any attempts before it arrives. Trade offs. Closes #21267
79 lines
2.8 KiB
C
79 lines
2.8 KiB
C
#ifndef HEADER_CURL_CF_DNS_H
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#define HEADER_CURL_CF_DNS_H
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/***************************************************************************
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* _ _ ____ _
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* Project ___| | | | _ \| |
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* / __| | | | |_) | |
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* | (__| |_| | _ <| |___
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* \___|\___/|_| \_\_____|
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*
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* Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
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*
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* This software is licensed as described in the file COPYING, which
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* you should have received as part of this distribution. The terms
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* are also available at https://curl.se/docs/copyright.html.
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*
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* You may opt to use, copy, modify, merge, publish, distribute and/or sell
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* copies of the Software, and permit persons to whom the Software is
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* furnished to do so, under the terms of the COPYING file.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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* SPDX-License-Identifier: curl
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*
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***************************************************************************/
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#include "curl_setup.h"
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struct Curl_easy;
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struct connectdata;
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struct Curl_dns_entry;
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struct Curl_addrinfo;
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CURLcode Curl_cf_dns_add(struct Curl_easy *data,
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struct connectdata *conn,
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int sockindex,
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uint8_t dns_queries,
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uint8_t transport,
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struct Curl_dns_entry *dns);
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CURLcode Curl_cf_dns_insert_after(struct Curl_cfilter *cf_at,
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struct Curl_easy *data,
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uint8_t dns_queries,
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const char *hostname,
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uint16_t port,
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uint8_t transport);
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CURLcode Curl_conn_dns_result(struct connectdata *conn, int sockindex);
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CURLcode Curl_cf_dns_result(struct Curl_cfilter *cf);
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/* Returns TRUE if any addressinfo is available via
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* `Curl_conn_dns_get_ai()`. */
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bool Curl_conn_dns_has_any_ai(struct Curl_easy *data, int sockindex);
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const struct Curl_addrinfo *
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Curl_conn_dns_get_ai(struct Curl_easy *data,
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int sockindex,
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int ai_family,
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unsigned int index);
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const struct Curl_addrinfo *
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Curl_cf_dns_get_ai(struct Curl_cfilter *cf,
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struct Curl_easy *data,
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int ai_family,
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unsigned int index);
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#ifdef USE_HTTPSRR
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const struct Curl_https_rrinfo *
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Curl_conn_dns_get_https(struct Curl_easy *data, int sockindex);
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bool Curl_conn_dns_resolved_https(struct Curl_easy *data, int sockindex);
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#else
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#define Curl_conn_dns_get_https(a,b) NULL
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#define Curl_conn_dns_resolved_https(a,b) TRUE
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#endif
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extern struct Curl_cftype Curl_cft_dns;
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#endif /* HEADER_CURL_CF_DNS_H */
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