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be45e014c6
The `struct Curl_dns_entry *` used to established a connection do not have the connection's lifetime, but the transfer's lifetime (of the transfer that initiates the connect). `Curl_dns_entry *` is reference counted with the "dns cache". That cache might be owned by the multi or the transfer's share. In the share, the reference count needs updating under lock. Therefore, the dns entry can only be kept *and* released using the same transfer it was initially looked up from. But a connection is often discarded using another transfer. So far, the problem of this has been avoided in clearing the connection's dns entries in the "multi_don()" handling. So, connections had NULL dns entries after the initial transfers and its connect had been handled. Keeping the dns entries in data->state seems therefore a better choice. Also: remove the `struct Curl_dns_entry *` from the connect filters contexts. Use `data->state.dns` every time instead and fail correctly when not present and needed. Closes #17383
119 lines
4.9 KiB
C
119 lines
4.9 KiB
C
#ifndef HEADER_CURL_URL_H
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#define HEADER_CURL_URL_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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/*
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* Prototypes for library-wide functions provided by url.c
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*/
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CURLcode Curl_init_do(struct Curl_easy *data, struct connectdata *conn);
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CURLcode Curl_open(struct Curl_easy **curl);
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CURLcode Curl_init_userdefined(struct Curl_easy *data);
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void Curl_freeset(struct Curl_easy *data);
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CURLcode Curl_uc_to_curlcode(CURLUcode uc);
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CURLcode Curl_close(struct Curl_easy **datap); /* opposite of curl_open() */
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CURLcode Curl_connect(struct Curl_easy *, bool *async, bool *protocol_connect);
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CURLcode Curl_setup_conn(struct Curl_easy *data,
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struct Curl_dns_entry *dns,
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bool *protocol_done);
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void Curl_conn_free(struct Curl_easy *data, struct connectdata *conn);
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CURLcode Curl_parse_login_details(const char *login, const size_t len,
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char **userptr, char **passwdptr,
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char **optionsptr);
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/* Attach/Clear/Get meta data for an easy handle. Needs to provide
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* a destructor, will be automatically called when the easy handle
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* is reset or closed. */
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typedef void Curl_meta_dtor(void *key, size_t key_len, void *meta_data);
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/* Set the transfer meta data for the key. Any existing entry for that
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* key will be destroyed.
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* Takes ownership of `meta_data` and destroys it when the call fails. */
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CURLcode Curl_meta_set(struct Curl_easy *data, const char *key,
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void *meta_data, Curl_meta_dtor *meta_dtor);
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void Curl_meta_remove(struct Curl_easy *data, const char *key);
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void *Curl_meta_get(struct Curl_easy *data, const char *key);
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void Curl_meta_reset(struct Curl_easy *data);
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/* Set connection meta data for the key. Any existing entry for that
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* key will be destroyed.
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* Takes ownership of `meta_data` and destroys it when the call fails. */
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CURLcode Curl_conn_meta_set(struct connectdata *conn, const char *key,
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void *meta_data, Curl_meta_dtor *meta_dtor);
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void Curl_conn_meta_remove(struct connectdata *conn, const char *key);
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void *Curl_conn_meta_get(struct connectdata *conn, const char *key);
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/* Get protocol handler for a URI scheme
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* @param scheme URI scheme, case-insensitive
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* @return NULL of handler not found
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*/
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const struct Curl_handler *Curl_get_scheme_handler(const char *scheme);
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const struct Curl_handler *Curl_getn_scheme_handler(const char *scheme,
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size_t len);
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#define CURL_DEFAULT_PROXY_PORT 1080 /* default proxy port unless specified */
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#define CURL_DEFAULT_HTTPS_PROXY_PORT 443 /* default https proxy port unless
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specified */
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#ifdef CURL_DISABLE_VERBOSE_STRINGS
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#define Curl_verboseconnect(x,y,z) Curl_nop_stmt
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#else
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void Curl_verboseconnect(struct Curl_easy *data, struct connectdata *conn,
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int sockindex);
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#endif
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/**
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* Return TRUE iff the given connection is considered dead.
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* @param nowp NULL or pointer to time being checked against.
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*/
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bool Curl_conn_seems_dead(struct connectdata *conn,
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struct Curl_easy *data,
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struct curltime *nowp);
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/**
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* Perform upkeep operations on the connection.
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*/
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CURLcode Curl_conn_upkeep(struct Curl_easy *data,
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struct connectdata *conn,
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struct curltime *now);
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#if defined(USE_HTTP2) || defined(USE_HTTP3)
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void Curl_data_priority_clear_state(struct Curl_easy *data);
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#else
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#define Curl_data_priority_clear_state(x)
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#endif /* !(defined(USE_HTTP2) || defined(USE_HTTP3)) */
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#ifdef USE_NGHTTP2
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CURLcode Curl_data_priority_add_child(struct Curl_easy *parent,
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struct Curl_easy *child,
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bool exclusive);
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#else
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#define Curl_data_priority_add_child(x, y, z) CURLE_NOT_BUILT_IN
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#endif
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#endif /* HEADER_CURL_URL_H */
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