WebSocket++  0.8.0-dev
C++ websocket client/server library
 All Classes Namespaces Files Functions Variables Typedefs Enumerations Enumerator Friends Pages
random.hpp
1 /*
2  * Copyright (c) 2014, 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_RANDOM_DEVICE_HPP
29 #define WEBSOCKETPP_COMMON_RANDOM_DEVICE_HPP
30 
31 #include <websocketpp/common/cpp11.hpp>
32 
33 // If we've determined that we're in full C++11 mode and the user hasn't
34 // explicitly disabled the use of C++11 random header, then prefer it to
35 // boost.
36 #if defined _WEBSOCKETPP_CPP11_INTERNAL_ && !defined _WEBSOCKETPP_NO_CPP11_RANDOM_DEVICE_
37  #ifndef _WEBSOCKETPP_CPP11_RANDOM_DEVICE_
38  #define _WEBSOCKETPP_CPP11_RANDOM_DEVICE_
39  #endif
40 #endif
41 
42 
43 // If we're on Visual Studio 2010 or higher and haven't explicitly disabled
44 // the use of C++11 random header then prefer it to boost.
45 #if defined(_MSC_VER) && _MSC_VER >= 1600 && !defined _WEBSOCKETPP_NO_CPP11_MEMORY_
46  #ifndef _WEBSOCKETPP_CPP11_MEMORY_
47  #define _WEBSOCKETPP_CPP11_MEMORY_
48  #endif
49 #endif
50 
51 
52 
53 #ifdef _WEBSOCKETPP_CPP11_RANDOM_DEVICE_
54  #include <random>
55 #else
56  #include <boost/version.hpp>
57 
58  #if (BOOST_VERSION/100000) == 1 && ((BOOST_VERSION/100)%1000) > 46
59  #include <boost/random/uniform_int_distribution.hpp>
60  #include <boost/random/random_device.hpp>
61  #elif (BOOST_VERSION/100000) == 1 && ((BOOST_VERSION/100)%1000) >= 43
62  #include <boost/nondet_random.hpp>
63  #else
64  // TODO: static_assert(false, "Could not find a suitable random_device")
65  #endif
66 #endif
67 
68 namespace websocketpp {
69 namespace lib {
70 
71 #ifdef _WEBSOCKETPP_CPP11_RANDOM_DEVICE_
72  using std::random_device;
73  using std::uniform_int_distribution;
74 #else
75  using boost::random::random_device;
76  using boost::random::uniform_int_distribution;
77 #endif
78 
79 } // namespace lib
80 } // namespace websocketpp
81 
82 #endif // WEBSOCKETPP_COMMON_RANDOM_DEVICE_HPP
void handle_accept(connection_ptr con, lib::error_code const &ec)
Handler callback for start_accept.