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71b7e01610
Refactoring of connection setup and happy eyeballing. Move
nghttp2. ngtcp2, quiche and msh3 into connection filters.
- eyeballing cfilter that uses sub-filters for performing parallel connects
- socket cfilter for all transport types, including QUIC
- QUIC implementations in cfilter, can now participate in eyeballing
- connection setup is more dynamic in order to adapt to what filter did
really connect. Relevant to see if a SSL filter needs to be added or
if SSL has already been provided
- HTTP/3 test cases similar to HTTP/2
- multiuse of parallel transfers for HTTP/3, tested for ngtcp2 and quiche
- Fix for data attach/detach in VTLS filters that could lead to crashes
during parallel transfers.
- Eliminating setup() methods in cfilters, no longer needed.
- Improving Curl_conn_is_alive() to replace Curl_connalive() and
integrated ssl alive checks into cfilter.
- Adding CF_CNTRL_CONN_INFO_UPDATE to tell filters to update
connection into and persist it at the easy handle.
- Several more cfilter related cleanups and moves:
- stream_weigth and dependency info is now wrapped in struct
Curl_data_priority
- Curl_data_priority members depend is available in HTTP2|HTTP3
- Curl_data_priority members depend on NGHTTP2 support
- handling init/reset/cleanup of priority part of url.c
- data->state.priority same struct, but shallow copy for compares only
- PROTOPT_STREAM has been removed
- Curl_conn_is_mulitplex() now available to check on capability
- Adding query method to connection filters.
- ngtcp2+quiche: implementing query for max concurrent transfers.
- Adding is_alive and keep_alive cfilter methods. Adding DATA_SETUP event.
- setting keepalive timestamp on connect
- DATA_SETUP is called after the connection has been completely
setup (but may not connected yet) to allow filters to initialize
data members they use.
- there is no socket to be had with msh3, it is unclear how select
shall work
- manual test via "curl --http3 https://curl.se" fail with "empty
reply from server".
- Various socket/conn related cleanups:
- Curl_socket is now Curl_socket_open and in cf-socket.c
- Curl_closesocket is now Curl_socket_close and in cf-socket.c
- Curl_ssl_use has been replaced with Cur_conn_is_ssl
- Curl_conn_tcp_accepted_set has been split into
Curl_conn_tcp_listen_set and Curl_conn_tcp_accepted_set
with a clearer purpose
Closes #10141
137 lines
5.3 KiB
C
137 lines
5.3 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) 1998 - 2022, 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 "nonblock.h" /* for curlx_nonblock(), formerly Curl_nonblock() */
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#include "sockaddr.h"
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#include "timeval.h"
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struct Curl_dns_entry;
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/* generic function that returns how much time there's left to run, according
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to the timeouts set */
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timediff_t Curl_timeleft(struct Curl_easy *data,
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struct curltime *nowp,
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bool duringconnect);
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#define DEFAULT_CONNECT_TIMEOUT 300000 /* milliseconds == five minutes */
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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, int *port);
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void Curl_persistconninfo(struct Curl_easy *data, struct connectdata *conn,
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char *local_ip, int local_port);
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/*
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* Curl_conncontrol() marks the end of a connection/stream. The 'closeit'
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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 closeit
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#if defined(DEBUGBUILD) && !defined(CURL_DISABLE_VERBOSE_STRINGS)
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, const char *reason
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#endif
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);
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#if defined(DEBUGBUILD) && !defined(CURL_DISABLE_VERBOSE_STRINGS)
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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 /* if !DEBUGBUILD || CURL_DISABLE_VERBOSE_STRINGS */
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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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/**
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* Create a cfilter for making an "ip" connection to the
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* given address, using paramters from `conn`. The "ip" connection
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* can be a TCP socket, a UDP socket or even a QUIC connection.
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*
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* It MUST use only the supplied `ai` for its connection attempt.
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*
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* Such a filter may be used in "happy eyeball" scenarios, and its
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* `connect` implementation needs to support non-blocking. Once connected,
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* it MAY be installed in the connection filter chain to serve transfers.
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*/
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typedef CURLcode cf_ip_connect_create(struct Curl_cfilter **pcf,
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struct Curl_easy *data,
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struct connectdata *conn,
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const struct Curl_addrinfo *ai);
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/**
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* Create a happy eyeball connection filter that uses the, once resolved,
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* address information to connect on ip families based on connection
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* configuration.
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* @param pcf output, the created cfilter
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* @param data easy handle used in creation
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* @param conn connection the filter is created for
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* @param cf_create method to create the sub-filters performing the
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* actual connects.
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*/
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CURLcode
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Curl_cf_happy_eyeballs_create(struct Curl_cfilter **pcf,
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struct Curl_easy *data,
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struct connectdata *conn,
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cf_ip_connect_create *cf_create,
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const struct Curl_dns_entry *remotehost);
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/**
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* Setup the cfilters at `sockindex` in connection `conn`, invoking
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* the instance `setup(remotehost)` methods. If no filter chain is
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* installed yet, inspects the configuration in `data` to install a
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* 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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const struct Curl_dns_entry *remotehost,
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int ssl_mode);
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#endif /* HEADER_CURL_CONNECT_H */
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