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#ifndef HEADER_CURL_CF_SOCKET_H
#define HEADER_CURL_CF_SOCKET_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 "sockaddr.h" /* required for Curl_sockaddr_storage */
struct Curl_addrinfo;
struct Curl_cfilter;
struct Curl_easy;
struct connectdata;
struct Curl_sockaddr_ex;
struct ip_quadruple;
/*
* The Curl_sockaddr_ex structure is basically libcurl's external API
* curl_sockaddr structure with enough space available to directly hold any
* protocol-specific address structures. The variable declared here will be
* used to pass / receive data to/from the fopensocket callback if this has
* been set, before that, it is initialized from parameters.
*/
struct Curl_sockaddr_ex {
int family;
int socktype;
int protocol;
unsigned int addrlen;
union {
struct sockaddr sa;
struct Curl_sockaddr_storage buf;
} addr;
};
#define curl_sa_addr addr.sa
#define curl_sa_addrbuf addr.buf
/*
* Parse interface option, and return the interface name and the host part.
*/
CURLcode Curl_parse_interface(const char *input,
char **dev, char **iface, char **host);
/*
* Create a socket based on info from 'conn' and 'ai'.
*
* Fill in 'addr' and 'sockfd' accordingly if OK is returned. If the open
* socket callback is set, used that!
*
*/
CURLcode Curl_socket_open(struct Curl_easy *data,
const struct Curl_addrinfo *ai,
struct Curl_sockaddr_ex *addr,
uint8_t transport,
curl_socket_t *sockfd);
int Curl_socket_close(struct Curl_easy *data, struct connectdata *conn,
curl_socket_t sock);
#ifdef USE_WINSOCK
/* When you run a program that uses the Windows Sockets API, you may
experience slow performance when you copy data to a TCP server.
https://learn.microsoft.com/troubleshoot/windows-server/networking/slow-performance-copy-data-tcp-server-sockets-api
Work-around: Make the Socket Send Buffer Size Larger Than the Program Send
Buffer Size
*/
void Curl_sndbuf_init(curl_socket_t sockfd);
#else
#define Curl_sndbuf_init(y) Curl_nop_stmt
#endif
/**
* Creates a cfilter that opens a TCP socket to the given address
* when calling its `connect` implementation.
* The filter will not touch any connection/data flags and can be
* used in happy eyeballing. Once selected for use, its `_active()`
* method needs to be called.
*/
CURLcode Curl_cf_tcp_create(struct Curl_cfilter **pcf,
struct Curl_easy *data,
struct connectdata *conn,
const struct Curl_addrinfo *ai,
uint8_t transport);
/**
* Creates a cfilter that opens a UDP socket to the given address
* when calling its `connect` implementation.
* The filter will not touch any connection/data flags and can be
* used in happy eyeballing. Once selected for use, its `_active()`
* method needs to be called.
*/
CURLcode Curl_cf_udp_create(struct Curl_cfilter **pcf,
struct Curl_easy *data,
struct connectdata *conn,
const struct Curl_addrinfo *ai,
uint8_t transport);
/**
* Creates a cfilter that opens a UNIX socket to the given address
* when calling its `connect` implementation.
* The filter will not touch any connection/data flags and can be
* used in happy eyeballing. Once selected for use, its `_active()`
* method needs to be called.
*/
CURLcode Curl_cf_unix_create(struct Curl_cfilter **pcf,
struct Curl_easy *data,
struct connectdata *conn,
const struct Curl_addrinfo *ai,
uint8_t transport);
/**
* Creates a cfilter that keeps a listening socket.
*/
CURLcode Curl_conn_tcp_listen_set(struct Curl_easy *data,
struct connectdata *conn,
int sockindex,
curl_socket_t *s);
/**
* Return TRUE iff the last filter at `sockindex` was set via
* Curl_conn_tcp_listen_set().
*/
bool Curl_conn_is_tcp_listen(struct Curl_easy *data,
int sockindex);
/**
* Peek at the socket and remote ip/port the socket filter is using.
* The filter owns all returned values.
* @param psock pointer to hold socket descriptor or NULL
* @param paddr pointer to hold addr reference or NULL
* @param pip pointer to get IP quadruple or NULL
* Returns error if the filter is of invalid type.
*/
CURLcode Curl_cf_socket_peek(struct Curl_cfilter *cf,
struct Curl_easy *data,
curl_socket_t *psock,
const struct Curl_sockaddr_ex **paddr,
struct ip_quadruple *pip) WARN_UNUSED_RESULT;
extern struct Curl_cftype Curl_cft_tcp;
extern struct Curl_cftype Curl_cft_udp;
extern struct Curl_cftype Curl_cft_unix;
extern struct Curl_cftype Curl_cft_tcp_accept;
#endif /* HEADER_CURL_CF_SOCKET_H */
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