1/* Declarations for connect.
2   Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
3   2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
4
5This file is part of GNU Wget.
6
7GNU Wget is free software; you can redistribute it and/or modify
8it under the terms of the GNU General Public License as published by
9the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
11
12GNU Wget is distributed in the hope that it will be useful,
13but WITHOUT ANY WARRANTY; without even the implied warranty of
14MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15GNU General Public License for more details.
16
17You should have received a copy of the GNU General Public License
18along with Wget.  If not, see <http://www.gnu.org/licenses/>.
19
20Additional permission under GNU GPL version 3 section 7
21
22If you modify this program, or any covered work, by linking or
23combining it with the OpenSSL project's OpenSSL library (or a
24modified version of that library), containing parts covered by the
25terms of the OpenSSL or SSLeay licenses, the Free Software Foundation
26grants you additional permission to convey the resulting work.
27Corresponding Source for a non-source form of such a combination
28shall include the source code for the parts of OpenSSL used as well
29as that of the covered work.  */
30
31#ifndef CONNECT_H
32#define CONNECT_H
33
34#include "host.h"		/* for definition of ip_address */
35
36/* Function declarations */
37
38/* Returned by connect_to_host when host name cannot be resolved.  */
39enum {
40  E_HOST = -100
41};
42int connect_to_host (const char *, int);
43int connect_to_ip (const ip_address *, int, const char *);
44
45int bind_local (const ip_address *, int *);
46int accept_connection (int);
47
48enum {
49  ENDPOINT_LOCAL,
50  ENDPOINT_PEER
51};
52bool socket_ip_address (int, ip_address *, int);
53
54bool retryable_socket_connect_error (int);
55
56/* Flags for select_fd's WAIT_FOR argument. */
57enum {
58  WAIT_FOR_READ = 1,
59  WAIT_FOR_WRITE = 2
60};
61int select_fd (int, double, int);
62bool test_socket_open (int);
63
64struct transport_implementation {
65  int (*reader) (int, char *, int, void *);
66  int (*writer) (int, char *, int, void *);
67  int (*poller) (int, double, int, void *);
68  int (*peeker) (int, char *, int, void *);
69  const char *(*errstr) (int, void *);
70  void (*closer) (int, void *);
71};
72
73void fd_register_transport (int, struct transport_implementation *, void *);
74void *fd_transport_context (int);
75int fd_read (int, char *, int, double);
76int fd_write (int, char *, int, double);
77int fd_peek (int, char *, int, double);
78const char *fd_errstr (int);
79void fd_close (int);
80
81#endif /* CONNECT_H */
82