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eb1f6bfa | 1 | // |
7962bc6a | 2 | // $Id$ |
eb1f6bfa | 3 | // |
0b96a9b3 | 4 | // Author: Jens-S. V?ckler <voeckler@rvs.uni-hannover.de> |
eb1f6bfa AJ |
5 | // |
6 | // File: socket.hh | |
7 | // Sun May 3 1998 | |
8 | // | |
9 | // (c) 1998 Lehrgebiet Rechnernetze und Verteilte Systeme | |
0b96a9b3 | 10 | // Universit?t Hannover, Germany |
eb1f6bfa AJ |
11 | // |
12 | // Books: W. Richard Steven, "Advanced Programming in the UNIX Environment", | |
13 | // Addison-Wesley, 1992. | |
14 | // | |
15 | // Permission to use, copy, modify, distribute, and sell this software | |
16 | // and its documentation for any purpose is hereby granted without fee, | |
17 | // provided that (i) the above copyright notices and this permission | |
18 | // notice appear in all copies of the software and related documentation, | |
19 | // and (ii) the names of the Lehrgebiet Rechnernetze und Verteilte | |
20 | // Systeme and the University of Hannover may not be used in any | |
21 | // advertising or publicity relating to the software without the | |
22 | // specific, prior written permission of Lehrgebiet Rechnernetze und | |
23 | // Verteilte Systeme and the University of Hannover. | |
24 | // | |
25 | // THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, | |
26 | // EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY | |
27 | // WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. | |
28 | // | |
29 | // IN NO EVENT SHALL THE LEHRGEBIET RECHNERNETZE UND VERTEILTE SYSTEME OR | |
30 | // THE UNIVERSITY OF HANNOVER BE LIABLE FOR ANY SPECIAL, INCIDENTAL, | |
31 | // INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND, OR ANY DAMAGES | |
32 | // WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER OR NOT | |
33 | // ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF LIABILITY, | |
34 | // ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS | |
35 | // SOFTWARE. | |
36 | // | |
eb1f6bfa AJ |
37 | // Revision 1.3 1999/01/19 11:00:50 voeckler |
38 | // added bool type workaround. | |
39 | // | |
40 | // Revision 1.2 1998/08/27 15:23:24 voeckler | |
41 | // added TCP_NODELAY options at several places. | |
42 | // | |
43 | // Revision 1.1 1998/08/13 21:52:55 voeckler | |
44 | // Initial revision | |
45 | // | |
46 | // | |
47 | #ifndef _SOCKET_HH | |
48 | #define _SOCKET_HH | |
49 | ||
59a09b98 | 50 | #if !defined(__cplusplus) |
eb1f6bfa AJ |
51 | #if defined(__GNUC__) || defined(__GNUG__) |
52 | #pragma interface | |
53 | #else | |
59a09b98 FC |
54 | #ifndef HAVE_BOOL |
55 | #define HAVE_BOOL | |
eb1f6bfa AJ |
56 | typedef int bool; |
57 | #define false 0 | |
58 | #define true 1 | |
59 | #endif | |
60 | #endif | |
59a09b98 | 61 | #endif /* __cplusplus */ |
eb1f6bfa AJ |
62 | |
63 | #include <sys/types.h> | |
582c2af2 | 64 | #include <sys/socket.h> |
eb1f6bfa AJ |
65 | #include <netinet/in.h> |
66 | ||
67 | #if SOMAXCONN <= 5 | |
68 | #undef SOMAXCONN | |
69 | #endif | |
70 | ||
71 | #ifndef SOMAXCONN | |
72 | #if defined(SOLARIS) | |
73 | #if MAJOR < 5 | |
74 | #define SOMAXCONN 32 | |
75 | #else | |
76 | #define SOMAXCONN 128 | |
77 | #endif | |
78 | #elif defined(LINUX) | |
79 | #define SOMAXCONN 128 | |
80 | #else | |
81 | #define SOMAXCONN 5 // BSD | |
82 | #endif // OS selection | |
83 | #endif // !SOMAXCONN | |
84 | ||
85 | #ifndef SA | |
86 | #define SA struct sockaddr | |
87 | #endif | |
88 | ||
89 | int | |
90 | setSocketBuffers( int fd, int size ); | |
91 | // purpose: set socket buffers for both directions to the specified size | |
92 | // paramtr: size (IN): new socket buffer size | |
93 | // returns: -1 on setsockopt() errors, 0 otherwise | |
94 | // warning: prints error message on stderr, errno will be changed | |
95 | ||
96 | int | |
97 | getSocketNoDelay( int sockfd ); | |
98 | // purpose: get state of the TCP_NODELAY of the socket | |
99 | // paramtr: sockfd (IN): socket descriptor | |
100 | // returns: 1, if TCP_NODELAY is set, | |
101 | // 0, if TCP_NODELAY is not set, | |
102 | // -1, if an error occurred (e.g. datagram socket) | |
103 | ||
104 | ||
105 | int | |
106 | setSocketNoDelay( int sockfd, bool nodelay = true ); | |
107 | // purpose: get state of the TCP_NODELAY of the socket | |
108 | // paramtr: sockfd (IN): socket descriptor | |
109 | // nodelay (IN): true, if TCP_NODELAY is to be set, false otherwise. | |
110 | // returns: 0, if everything worked out o.k. | |
111 | // -1, if an error occurred (e.g. datagram socket) | |
112 | ||
113 | int | |
114 | connectTo( struct in_addr host, unsigned short port, bool nodelay = false, | |
115 | int sendBufferSize = -1, int recvBufferSize = -1 ); | |
116 | // purpose: connect to a server as a client | |
117 | // paramtr: host (IN): address describing the server | |
118 | // port (IN): port to connect at the server | |
119 | // nodelay (IN): true=set TCP_NODELAY option. | |
120 | // sendBufferSize (IN): don't set (use sys defaults) if < 0 | |
121 | // recvBufferSize (IN): don't set (use sys defaults) if < 0 | |
122 | // returns: >=0 is the descriptor of the opened, connected socket, | |
123 | // -1 is an indication of an error (errno may have been reset). | |
124 | ||
125 | int | |
126 | serverSocket( struct in_addr host, unsigned short port, | |
127 | int backlog = SOMAXCONN, bool reuse = true, bool nodelay = false, | |
128 | int sendBufferSize = -1, int recvBufferSize = -1 ); | |
129 | // purpose: open a server socket for listening | |
130 | // paramtr: host (IN): host to bind locally to, use INADDRY_ANY for * | |
131 | // port (IN): port to bind to, use 0 for system assigned | |
132 | // backlog (IN): listen backlog queue length | |
133 | // reuse (IN): set SO_REUSEADDR option - default usefully | |
134 | // nodelay (IN): true=set TCP_NODELAY option. | |
135 | // SETTING TCP_NODELAY ON A SERVER SOCKET DOES NOT MAKE SENSE! | |
136 | // sendBufferSize (IN): don't set (use sys defaults) if < 0 | |
137 | // recvBufferSize (IN): don't set (use sys defaults) if < 0 | |
138 | // returns: opened listening fd, or -1 on error. | |
139 | // warning: error message will be printed on stderr and errno reset. | |
140 | ||
141 | #endif // _SOCKET_HH |