1 #ifndef HEADER_CURL_CONNECT_H
2 #define HEADER_CURL_CONNECT_H
3 /***************************************************************************
5 * Project ___| | | | _ \| |
7 * | (__| |_| | _ <| |___
8 * \___|\___/|_| \_\_____|
10 * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel@haxx.se>, et al.
12 * This software is licensed as described in the file COPYING, which
13 * you should have received as part of this distribution. The terms
14 * are also available at https://curl.haxx.se/docs/copyright.html.
16 * You may opt to use, copy, modify, merge, publish, distribute and/or sell
17 * copies of the Software, and permit persons to whom the Software is
18 * furnished to do so, under the terms of the COPYING file.
20 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
21 * KIND, either express or implied.
23 ***************************************************************************/
24 #include "curl_setup.h"
26 #include "nonblock.h" /* for curlx_nonblock(), formerly Curl_nonblock() */
30 CURLcode Curl_is_connected(struct connectdata *conn,
34 CURLcode Curl_connecthost(struct connectdata *conn,
35 const struct Curl_dns_entry *host);
37 /* generic function that returns how much time there's left to run, according
38 to the timeouts set */
39 timediff_t Curl_timeleft(struct Curl_easy *data,
40 struct curltime *nowp,
43 #define DEFAULT_CONNECT_TIMEOUT 300000 /* milliseconds == five minutes */
46 * Used to extract socket and connectdata struct for the most recent
47 * transfer on the given Curl_easy.
49 * The returned socket will be CURL_SOCKET_BAD in case of failure!
51 curl_socket_t Curl_getconnectinfo(struct Curl_easy *data,
52 struct connectdata **connp);
55 * Check if a connection seems to be alive.
57 bool Curl_connalive(struct connectdata *conn);
60 /* When you run a program that uses the Windows Sockets API, you may
61 experience slow performance when you copy data to a TCP server.
63 https://support.microsoft.com/kb/823764
65 Work-around: Make the Socket Send Buffer Size Larger Than the Program Send
69 void Curl_sndbufset(curl_socket_t sockfd);
71 #define Curl_sndbufset(y) Curl_nop_stmt
74 void Curl_updateconninfo(struct connectdata *conn, curl_socket_t sockfd);
75 void Curl_persistconninfo(struct connectdata *conn);
76 int Curl_closesocket(struct connectdata *conn, curl_socket_t sock);
79 * Get presentation format IP address and port from a sockaddr.
81 bool Curl_getaddressinfo(struct sockaddr *sa, char *addr, long *port);
84 * The Curl_sockaddr_ex structure is basically libcurl's external API
85 * curl_sockaddr structure with enough space available to directly hold any
86 * protocol-specific address structures. The variable declared here will be
87 * used to pass / receive data to/from the fopensocket callback if this has
88 * been set, before that, it is initialized from parameters.
90 struct Curl_sockaddr_ex {
97 struct Curl_sockaddr_storage buff;
100 #define sa_addr _sa_ex_u.addr
103 * Create a socket based on info from 'conn' and 'ai'.
105 * Fill in 'addr' and 'sockfd' accordingly if OK is returned. If the open
106 * socket callback is set, used that!
109 CURLcode Curl_socket(struct connectdata *conn,
110 const Curl_addrinfo *ai,
111 struct Curl_sockaddr_ex *addr,
112 curl_socket_t *sockfd);
114 void Curl_tcpnodelay(struct connectdata *conn, curl_socket_t sockfd);
117 * Curl_conncontrol() marks the end of a connection/stream. The 'closeit'
118 * argument specifies if it is the end of a connection or a stream.
120 * For stream-based protocols (such as HTTP/2), a stream close will not cause
121 * a connection close. Other protocols will close the connection for both
124 * It sets the bit.close bit to TRUE (with an explanation for debug builds),
125 * when the connection will close.
128 #define CONNCTRL_KEEP 0 /* undo a marked closure */
129 #define CONNCTRL_CONNECTION 1
130 #define CONNCTRL_STREAM 2
132 void Curl_conncontrol(struct connectdata *conn,
134 #if defined(DEBUGBUILD) && !defined(CURL_DISABLE_VERBOSE_STRINGS)
139 #if defined(DEBUGBUILD) && !defined(CURL_DISABLE_VERBOSE_STRINGS)
140 #define streamclose(x,y) Curl_conncontrol(x, CONNCTRL_STREAM, y)
141 #define connclose(x,y) Curl_conncontrol(x, CONNCTRL_CONNECTION, y)
142 #define connkeep(x,y) Curl_conncontrol(x, CONNCTRL_KEEP, y)
143 #else /* if !DEBUGBUILD || CURL_DISABLE_VERBOSE_STRINGS */
144 #define streamclose(x,y) Curl_conncontrol(x, CONNCTRL_STREAM)
145 #define connclose(x,y) Curl_conncontrol(x, CONNCTRL_CONNECTION)
146 #define connkeep(x,y) Curl_conncontrol(x, CONNCTRL_KEEP)
149 bool Curl_conn_data_pending(struct connectdata *conn, int sockindex);
151 #endif /* HEADER_CURL_CONNECT_H */