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bc40e09f63
`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
143 lines
5.4 KiB
C
143 lines
5.4 KiB
C
#ifndef HEADER_CURL_CONNECT_H
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#define HEADER_CURL_CONNECT_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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#include "hostip.h"
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#include "curlx/timeval.h"
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struct Curl_dns_entry;
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struct ip_quadruple;
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struct Curl_peer;
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struct Curl_str;
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enum alpnid Curl_alpn2alpnid(const unsigned char *name, size_t len);
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enum alpnid Curl_str2alpnid(const struct Curl_str *cstr);
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/* generic function that returns how much time there is left to run, according
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to the timeouts set */
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timediff_t Curl_timeleft_ms(struct Curl_easy *data);
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#define DEFAULT_CONNECT_TIMEOUT 300000 /* milliseconds == five minutes */
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#define DEFAULT_SHUTDOWN_TIMEOUT_MS (2 * 1000)
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void Curl_shutdown_start(struct Curl_easy *data, int sockindex,
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int timeout_ms);
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/* return how much time there is left to shutdown the connection at
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* sockindex. Returns 0 if there is no limit or shutdown has not started. */
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timediff_t Curl_shutdown_timeleft(struct Curl_easy *data,
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struct connectdata *conn,
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int sockindex);
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/* return how much time there is left to shutdown the connection.
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* Returns 0 if there is no limit or shutdown has not started. */
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timediff_t Curl_conn_shutdown_timeleft(struct Curl_easy *data,
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struct connectdata *conn);
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void Curl_shutdown_clear(struct Curl_easy *data, int sockindex);
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/* TRUE iff shutdown has been started */
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bool Curl_shutdown_started(struct Curl_easy *data, int sockindex);
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/*
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* Used to extract socket and connectdata struct for the most recent
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* transfer on the given Curl_easy.
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*
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* The returned socket will be CURL_SOCKET_BAD in case of failure!
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*/
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curl_socket_t Curl_getconnectinfo(struct Curl_easy *data,
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struct connectdata **connp);
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bool Curl_addr2string(struct sockaddr *sa, curl_socklen_t salen,
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char *addr, uint16_t *port);
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/*
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* Curl_conncontrol() marks the end of a connection/stream. The 'ctrl'
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* argument specifies if it is the end of a connection or a stream.
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*
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* For stream-based protocols (such as HTTP/2), a stream close will not cause
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* a connection close. Other protocols will close the connection for both
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* cases.
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*
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* It sets the bit.close bit to TRUE (with an explanation for debug builds),
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* when the connection will close.
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*/
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#define CONNCTRL_KEEP 0 /* undo a marked closure */
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#define CONNCTRL_CONNECTION 1
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#define CONNCTRL_STREAM 2
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void Curl_conncontrol(struct connectdata *conn,
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int ctrl
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#if defined(DEBUGBUILD) && defined(CURLVERBOSE)
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, const char *reason
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#endif
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);
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#if defined(DEBUGBUILD) && defined(CURLVERBOSE)
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#define streamclose(x, y) Curl_conncontrol(x, CONNCTRL_STREAM, y)
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#define connclose(x, y) Curl_conncontrol(x, CONNCTRL_CONNECTION, y)
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#define connkeep(x, y) Curl_conncontrol(x, CONNCTRL_KEEP, y)
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#else /* !DEBUGBUILD || !CURLVERBOSE */
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#define streamclose(x, y) Curl_conncontrol(x, CONNCTRL_STREAM)
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#define connclose(x, y) Curl_conncontrol(x, CONNCTRL_CONNECTION)
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#define connkeep(x, y) Curl_conncontrol(x, CONNCTRL_KEEP)
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#endif
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CURLcode Curl_cf_setup_insert_after(struct Curl_cfilter *cf_at,
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struct Curl_easy *data,
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uint8_t transport,
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int ssl_mode);
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/**
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* Setup the cfilters at `sockindex` in connection `conn`.
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* If no filter chain is installed yet, inspects the configuration
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* in `data` and `conn? to install a suitable filter chain.
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*/
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CURLcode Curl_conn_setup(struct Curl_easy *data,
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struct connectdata *conn,
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int sockindex,
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struct Curl_dns_entry *dns,
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int ssl_mode);
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/* Set conn to allow multiplexing. */
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void Curl_conn_set_multiplex(struct connectdata *conn);
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/* Get the peer the connection actually connects to at sockindex.
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* Often the same as "origin", but can be redirected via "connect-to"
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* or "alt-svc". May tunnel through proxies. */
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struct Curl_peer *Curl_conn_get_destination(struct connectdata *conn,
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int sockindex);
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/* Get the peer curl connects its socket to.
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* Can be origin, "connect-to" or the first proxy. */
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struct Curl_peer *Curl_conn_get_first_peer(struct connectdata *conn,
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int sockindex);
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extern struct Curl_cftype Curl_cft_setup;
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#endif /* HEADER_CURL_CONNECT_H */
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