#94: Add a config directive to let Privoxy prefer either IPv4 (or IPv6) addresses
[privoxy.git] / gateway.h
1 #ifndef GATEWAY_H_INCLUDED
2 #define GATEWAY_H_INCLUDED
3 #define GATEWAY_H_VERSION "$Id: gateway.h,v 1.18 2009/09/06 14:15:46 fabiankeil Exp $"
4 /*********************************************************************
5  *
6  * File        :  $Source: /cvsroot/ijbswa/current/gateway.h,v $
7  *
8  * Purpose     :  Contains functions to connect to a server, possibly
9  *                using a "gateway" (i.e. HTTP proxy and/or SOCKS4
10  *                proxy).  Also contains the list of gateway types.
11  *
12  * Copyright   :  Written by and Copyright (C) 2001-2009 the
13  *                Privoxy team. http://www.privoxy.org/
14  *
15  *                Based on the Internet Junkbuster originally written
16  *                by and Copyright (C) 1997 Anonymous Coders and 
17  *                Junkbusters Corporation.  http://www.junkbusters.com
18  *
19  *                This program is free software; you can redistribute it 
20  *                and/or modify it under the terms of the GNU General
21  *                Public License as published by the Free Software
22  *                Foundation; either version 2 of the License, or (at
23  *                your option) any later version.
24  *
25  *                This program is distributed in the hope that it will
26  *                be useful, but WITHOUT ANY WARRANTY; without even the
27  *                implied warranty of MERCHANTABILITY or FITNESS FOR A
28  *                PARTICULAR PURPOSE.  See the GNU General Public
29  *                License for more details.
30  *
31  *                The GNU General Public License should be included with
32  *                this file.  If not, you can view it at
33  *                http://www.gnu.org/copyleft/gpl.html
34  *                or write to the Free Software Foundation, Inc., 59
35  *                Temple Place - Suite 330, Boston, MA  02111-1307, USA.
36  *
37  *********************************************************************/
38
39
40 #ifdef __cplusplus
41 extern "C" {
42 #endif
43
44 struct forward_spec;
45 struct http_request;
46 struct client_state;
47
48 extern jb_socket forwarded_connect(const struct forward_spec * fwd, 
49                                    struct http_request *http, 
50                                    struct client_state *csp);
51
52 /*
53  * Default number of seconds after which an
54  * open connection will no longer be reused.
55  */
56 #define DEFAULT_KEEP_ALIVE_TIMEOUT 180
57
58 #ifdef FEATURE_CONNECTION_SHARING
59 extern void set_keep_alive_timeout(unsigned int timeout);
60 extern void initialize_reusable_connections(void);
61 extern void forget_connection(jb_socket sfd);
62 extern void remember_connection(const struct reusable_connection *connection);
63 extern int close_unusable_connections(void);
64 #endif /* FEATURE_CONNECTION_SHARING */
65
66 #ifdef FEATURE_CONNECTION_KEEP_ALIVE
67 extern void mark_connection_closed(struct reusable_connection *closed_connection);
68 extern int connection_destination_matches(const struct reusable_connection *connection,
69                                           const struct http_request *http,
70                                           const struct forward_spec *fwd);
71 #endif /* def FEATURE_CONNECTION_KEEP_ALIVE */
72
73 /*
74  * Solaris fix
75  */
76 #ifndef INADDR_NONE
77 #define INADDR_NONE -1
78 #endif
79
80 /*
81  * Revision control strings from this header and associated .c file
82  */
83 extern const char gateway_rcs[];
84 extern const char gateway_h_rcs[];
85
86 #ifdef __cplusplus
87 } /* extern "C" */
88 #endif
89
90 #endif /* ndef GATEWAY_H_INCLUDED */
91
92 /*
93   Local Variables:
94   tab-width: 3
95   end:
96 */