source: UsbWattMeter/trunk/curl-7.47.1/lib/connect.h

Last change on this file was 167, checked in by coas-nagasima, 6 years ago

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[164]1#ifndef HEADER_CURL_CONNECT_H
2#define HEADER_CURL_CONNECT_H
3/***************************************************************************
4 * _ _ ____ _
5 * Project ___| | | | _ \| |
6 * / __| | | | |_) | |
7 * | (__| |_| | _ <| |___
8 * \___|\___/|_| \_\_____|
9 *
10 * Copyright (C) 1998 - 2015, Daniel Stenberg, <daniel@haxx.se>, et al.
11 *
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.
15 *
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.
19 *
20 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
21 * KIND, either express or implied.
22 *
23 ***************************************************************************/
24#include "curl_setup.h"
25
26#include "nonblock.h" /* for curlx_nonblock(), formerly Curl_nonblock() */
27#include "sockaddr.h"
28
29CURLcode Curl_is_connected(struct connectdata *conn,
30 int sockindex,
31 bool *connected);
32
33CURLcode Curl_connecthost(struct connectdata *conn,
34 const struct Curl_dns_entry *host);
35
36/* generic function that returns how much time there's left to run, according
37 to the timeouts set */
38long Curl_timeleft(struct SessionHandle *data,
39 struct timeval *nowp,
40 bool duringconnect);
41
42#define DEFAULT_CONNECT_TIMEOUT 300000 /* milliseconds == five minutes */
43#define HAPPY_EYEBALLS_TIMEOUT 200 /* milliseconds to wait between
44 IPv4/IPv6 connection attempts */
45
46/*
47 * Used to extract socket and connectdata struct for the most recent
48 * transfer on the given SessionHandle.
49 *
50 * The returned socket will be CURL_SOCKET_BAD in case of failure!
51 */
52curl_socket_t Curl_getconnectinfo(struct SessionHandle *data,
53 struct connectdata **connp);
54
55#ifdef USE_WINSOCK
56/* When you run a program that uses the Windows Sockets API, you may
57 experience slow performance when you copy data to a TCP server.
58
59 https://support.microsoft.com/kb/823764
60
61 Work-around: Make the Socket Send Buffer Size Larger Than the Program Send
62 Buffer Size
63
64*/
65void Curl_sndbufset(curl_socket_t sockfd);
66#else
67#define Curl_sndbufset(y) Curl_nop_stmt
68#endif
69
70void Curl_updateconninfo(struct connectdata *conn, curl_socket_t sockfd);
71void Curl_persistconninfo(struct connectdata *conn);
72int Curl_closesocket(struct connectdata *conn, curl_socket_t sock);
73
74/*
75 * The Curl_sockaddr_ex structure is basically libcurl's external API
76 * curl_sockaddr structure with enough space available to directly hold any
77 * protocol-specific address structures. The variable declared here will be
78 * used to pass / receive data to/from the fopensocket callback if this has
79 * been set, before that, it is initialized from parameters.
80 */
81struct Curl_sockaddr_ex {
82 int family;
83 int socktype;
84 int protocol;
85 unsigned int addrlen;
86 union {
87 struct sockaddr addr;
88 struct Curl_sockaddr_storage buff;
89 } _sa_ex_u;
90};
91#define sa_addr _sa_ex_u.addr
92
93/*
94 * Create a socket based on info from 'conn' and 'ai'.
95 *
96 * Fill in 'addr' and 'sockfd' accordingly if OK is returned. If the open
97 * socket callback is set, used that!
98 *
99 */
100CURLcode Curl_socket(struct connectdata *conn,
101 const Curl_addrinfo *ai,
102 struct Curl_sockaddr_ex *addr,
103 curl_socket_t *sockfd);
104
105void Curl_tcpnodelay(struct connectdata *conn, curl_socket_t sockfd);
106
107#ifdef CURLDEBUG
108/*
109 * Curl_connclose() sets the bit.close bit to TRUE with an explanation.
110 * Nothing else.
111 */
112void Curl_conncontrol(struct connectdata *conn,
113 bool closeit,
114 const char *reason);
115#define connclose(x,y) Curl_conncontrol(x,TRUE, y)
116#define connkeep(x,y) Curl_conncontrol(x, FALSE, y)
117#else /* if !CURLDEBUG */
118
119#define connclose(x,y) (x)->bits.close = TRUE
120#define connkeep(x,y) (x)->bits.close = FALSE
121
122#endif
123
124#endif /* HEADER_CURL_CONNECT_H */
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