192 lines
6.7 KiB
C
192 lines
6.7 KiB
C
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#ifndef HEADER_CURL_CF_SOCKET_H
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#define HEADER_CURL_CF_SOCKET_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 "nonblock.h" /* for curlx_nonblock(), formerly Curl_nonblock() */
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#include "sockaddr.h"
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struct Curl_addrinfo;
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struct Curl_cfilter;
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struct Curl_easy;
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struct connectdata;
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struct Curl_sockaddr_ex;
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#ifndef SIZEOF_CURL_SOCKET_T
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/* configure and cmake check and set the define */
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# ifdef _WIN64
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# define SIZEOF_CURL_SOCKET_T 8
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# else
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/* default guess */
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# define SIZEOF_CURL_SOCKET_T 4
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# endif
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#endif
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#if SIZEOF_CURL_SOCKET_T < 8
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# define CURL_FORMAT_SOCKET_T "d"
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#else
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# define CURL_FORMAT_SOCKET_T "qd"
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#endif
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/*
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* The Curl_sockaddr_ex structure is basically libcurl's external API
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* curl_sockaddr structure with enough space available to directly hold any
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* protocol-specific address structures. The variable declared here will be
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* used to pass / receive data to/from the fopensocket callback if this has
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* been set, before that, it is initialized from parameters.
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*/
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struct Curl_sockaddr_ex {
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int family;
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int socktype;
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int protocol;
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unsigned int addrlen;
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union {
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struct sockaddr addr;
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struct Curl_sockaddr_storage buff;
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} _sa_ex_u;
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};
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#define sa_addr _sa_ex_u.addr
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/*
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* Create a socket based on info from 'conn' and 'ai'.
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*
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* Fill in 'addr' and 'sockfd' accordingly if OK is returned. If the open
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* socket callback is set, used that!
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*
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*/
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CURLcode Curl_socket_open(struct Curl_easy *data,
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const struct Curl_addrinfo *ai,
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struct Curl_sockaddr_ex *addr,
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int transport,
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curl_socket_t *sockfd);
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int Curl_socket_close(struct Curl_easy *data, struct connectdata *conn,
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curl_socket_t sock);
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#ifdef USE_WINSOCK
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/* When you run a program that uses the Windows Sockets API, you may
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experience slow performance when you copy data to a TCP server.
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https://support.microsoft.com/kb/823764
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Work-around: Make the Socket Send Buffer Size Larger Than the Program Send
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Buffer Size
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*/
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void Curl_sndbufset(curl_socket_t sockfd);
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#else
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#define Curl_sndbufset(y) Curl_nop_stmt
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#endif
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/**
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* Assign the address `ai` to the Curl_sockaddr_ex `dest` and
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* set the transport used.
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*/
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void Curl_sock_assign_addr(struct Curl_sockaddr_ex *dest,
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const struct Curl_addrinfo *ai,
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int transport);
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/**
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* Creates a cfilter that opens a TCP socket to the given address
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* when calling its `connect` implementation.
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* The filter will not touch any connection/data flags and can be
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* used in happy eyeballing. Once selected for use, its `_active()`
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* method needs to be called.
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*/
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CURLcode Curl_cf_tcp_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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int transport);
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/**
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* Creates a cfilter that opens a UDP socket to the given address
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* when calling its `connect` implementation.
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* The filter will not touch any connection/data flags and can be
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* used in happy eyeballing. Once selected for use, its `_active()`
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* method needs to be called.
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*/
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CURLcode Curl_cf_udp_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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int transport);
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/**
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* Creates a cfilter that opens a UNIX socket to the given address
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* when calling its `connect` implementation.
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* The filter will not touch any connection/data flags and can be
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* used in happy eyeballing. Once selected for use, its `_active()`
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* method needs to be called.
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*/
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CURLcode Curl_cf_unix_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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int transport);
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/**
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* Creates a cfilter that keeps a listening socket.
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*/
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CURLcode Curl_conn_tcp_listen_set(struct Curl_easy *data,
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struct connectdata *conn,
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int sockindex,
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curl_socket_t *s);
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/**
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* Replace the listen socket with the accept()ed one.
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*/
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CURLcode Curl_conn_tcp_accepted_set(struct Curl_easy *data,
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struct connectdata *conn,
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int sockindex,
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curl_socket_t *s);
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/**
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* Peek at the socket and remote ip/port the socket filter is using.
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* The filter owns all returned values.
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* @param psock pointer to hold socket descriptor or NULL
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* @param paddr pointer to hold addr reference or NULL
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* @param pr_ip_str pointer to hold remote addr as string or NULL
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* @param pr_port pointer to hold remote port number or NULL
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* @param pl_ip_str pointer to hold local addr as string or NULL
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* @param pl_port pointer to hold local port number or NULL
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* Returns error if the filter is of invalid type.
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*/
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CURLcode Curl_cf_socket_peek(struct Curl_cfilter *cf,
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struct Curl_easy *data,
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curl_socket_t *psock,
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const struct Curl_sockaddr_ex **paddr,
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const char **pr_ip_str, int *pr_port,
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const char **pl_ip_str, int *pl_port);
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extern struct Curl_cftype Curl_cft_tcp;
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extern struct Curl_cftype Curl_cft_udp;
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extern struct Curl_cftype Curl_cft_unix;
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extern struct Curl_cftype Curl_cft_tcp_accept;
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#endif /* HEADER_CURL_CF_SOCKET_H */
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