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#ifndef HEADER_CURL_CONNECT_H
#define HEADER_CURL_CONNECT_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"
#include "nonblock.h" /* for curlx_nonblock(), formerly Curl_nonblock() */
#include "sockaddr.h"
#include "timeval.h"
struct Curl_dns_entry;
/* generic function that returns how much time there's left to run, according
to the timeouts set */
timediff_t Curl_timeleft(struct Curl_easy *data,
struct curltime *nowp,
bool duringconnect);
#define DEFAULT_CONNECT_TIMEOUT 300000 /* milliseconds == five minutes */
/*
* Used to extract socket and connectdata struct for the most recent
* transfer on the given Curl_easy.
*
* The returned socket will be CURL_SOCKET_BAD in case of failure!
*/
curl_socket_t Curl_getconnectinfo(struct Curl_easy *data,
struct connectdata **connp);
bool Curl_addr2string(struct sockaddr *sa, curl_socklen_t salen,
char *addr, int *port);
void Curl_persistconninfo(struct Curl_easy *data, struct connectdata *conn,
char *local_ip, int local_port);
/*
* Curl_conncontrol() marks the end of a connection/stream. The 'closeit'
* argument specifies if it is the end of a connection or a stream.
*
* For stream-based protocols (such as HTTP/2), a stream close will not cause
* a connection close. Other protocols will close the connection for both
* cases.
*
* It sets the bit.close bit to TRUE (with an explanation for debug builds),
* when the connection will close.
*/
#define CONNCTRL_KEEP 0 /* undo a marked closure */
#define CONNCTRL_CONNECTION 1
#define CONNCTRL_STREAM 2
void Curl_conncontrol(struct connectdata *conn,
int closeit
#if defined(DEBUGBUILD) && !defined(CURL_DISABLE_VERBOSE_STRINGS)
, const char *reason
#endif
);
#if defined(DEBUGBUILD) && !defined(CURL_DISABLE_VERBOSE_STRINGS)
#define streamclose(x,y) Curl_conncontrol(x, CONNCTRL_STREAM, y)
#define connclose(x,y) Curl_conncontrol(x, CONNCTRL_CONNECTION, y)
#define connkeep(x,y) Curl_conncontrol(x, CONNCTRL_KEEP, y)
#else /* if !DEBUGBUILD || CURL_DISABLE_VERBOSE_STRINGS */
#define streamclose(x,y) Curl_conncontrol(x, CONNCTRL_STREAM)
#define connclose(x,y) Curl_conncontrol(x, CONNCTRL_CONNECTION)
#define connkeep(x,y) Curl_conncontrol(x, CONNCTRL_KEEP)
#endif
/**
* Create a cfilter for making an "ip" connection to the
* given address, using parameters from `conn`. The "ip" connection
* can be a TCP socket, a UDP socket or even a QUIC connection.
*
* It MUST use only the supplied `ai` for its connection attempt.
*
* Such a filter may be used in "happy eyeball" scenarios, and its
* `connect` implementation needs to support non-blocking. Once connected,
* it MAY be installed in the connection filter chain to serve transfers.
*/
typedef CURLcode cf_ip_connect_create(struct Curl_cfilter **pcf,
struct Curl_easy *data,
struct connectdata *conn,
const struct Curl_addrinfo *ai,
int transport);
/**
* Create a happy eyeball connection filter that uses the, once resolved,
* address information to connect on ip families based on connection
* configuration.
* @param pcf output, the created cfilter
* @param data easy handle used in creation
* @param conn connection the filter is created for
* @param cf_create method to create the sub-filters performing the
* actual connects.
*/
CURLcode
Curl_cf_happy_eyeballs_create(struct Curl_cfilter **pcf,
struct Curl_easy *data,
struct connectdata *conn,
cf_ip_connect_create *cf_create,
const struct Curl_dns_entry *remotehost,
int transport);
CURLcode Curl_cf_setup_add(struct Curl_easy *data,
struct connectdata *conn,
int sockindex,
const struct Curl_dns_entry *remotehost,
int transport,
int ssl_mode);
CURLcode Curl_cf_setup_insert_after(struct Curl_cfilter *cf_at,
struct Curl_easy *data,
const struct Curl_dns_entry *remotehost,
int transport,
int ssl_mode);
/**
* Setup the cfilters at `sockindex` in connection `conn`.
* If no filter chain is installed yet, inspects the configuration
* in `data` and `conn? to install a suitable filter chain.
*/
CURLcode Curl_conn_setup(struct Curl_easy *data,
struct connectdata *conn,
int sockindex,
const struct Curl_dns_entry *remotehost,
int ssl_mode);
extern struct Curl_cftype Curl_cft_happy_eyeballs;
extern struct Curl_cftype Curl_cft_setup;
#ifdef DEBUGBUILD
void Curl_debug_set_transport_provider(int transport,
cf_ip_connect_create *cf_create);
#endif
#endif /* HEADER_CURL_CONNECT_H */
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