websocketpp  0.3.0
C++/Boost Asio based websocket client/server library
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network.hpp
1 /*
2  * Copyright (c) 2013, Peter Thorson. All rights reserved.
3  *
4  * Redistribution and use in source and binary forms, with or without
5  * modification, are permitted provided that the following conditions are met:
6  * * Redistributions of source code must retain the above copyright
7  * notice, this list of conditions and the following disclaimer.
8  * * Redistributions in binary form must reproduce the above copyright
9  * notice, this list of conditions and the following disclaimer in the
10  * documentation and/or other materials provided with the distribution.
11  * * Neither the name of the WebSocket++ Project nor the
12  * names of its contributors may be used to endorse or promote products
13  * derived from this software without specific prior written permission.
14  *
15  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
16  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18  * ARE DISCLAIMED. IN NO EVENT SHALL PETER THORSON BE LIABLE FOR ANY
19  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
20  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
21  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
22  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
24  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25  *
26  */
27 
28 #ifndef WEBSOCKETPP_COMMON_NETWORK_HPP
29 #define WEBSOCKETPP_COMMON_NETWORK_HPP
30 
31 // For ntohs and htons
32 #if defined(_WIN32)
33  #include <winsock2.h>
34 #else
35  //#include <arpa/inet.h>
36  #include <netinet/in.h>
37 #endif
38 
39 namespace websocketpp {
40 namespace lib {
41 namespace net {
42 
43 inline bool is_little_endian() {
44  short int val = 0x1;
45  char *ptr = (char*)&val;
46  return (ptr[0] == 1);
47 }
48 
49 #define TYP_INIT 0
50 #define TYP_SMLE 1
51 #define TYP_BIGE 2
52 
53 inline uint64_t htonll(uint64_t src) {
54  static int typ = TYP_INIT;
55  unsigned char c;
56  union {
57  uint64_t ull;
58  unsigned char c[8];
59  } x;
60  if (typ == TYP_INIT) {
61  x.ull = 0x01;
62  typ = (x.c[7] == 0x01ULL) ? TYP_BIGE : TYP_SMLE;
63  }
64  if (typ == TYP_BIGE)
65  return src;
66  x.ull = src;
67  c = x.c[0]; x.c[0] = x.c[7]; x.c[7] = c;
68  c = x.c[1]; x.c[1] = x.c[6]; x.c[6] = c;
69  c = x.c[2]; x.c[2] = x.c[5]; x.c[5] = c;
70  c = x.c[3]; x.c[3] = x.c[4]; x.c[4] = c;
71  return x.ull;
72 }
73 
74 inline uint64_t ntohll(uint64_t src) {
75  return htonll(src);
76 }
77 
78 } // net
79 } // lib
80 } // websocketpp
81 
82 #endif // WEBSOCKETPP_COMMON_NETWORK_HPP
Namespace for the WebSocket++ project.
Definition: base64.hpp:41