WebSocket++ 0.8.2
C++ websocket client/server library
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cpp11.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_CPP11_HPP
29#define WEBSOCKETPP_COMMON_CPP11_HPP
30
31/**
32 * This header sets up some constants based on the state of C++11 support
33 */
34
35// Hide clang feature detection from other compilers
36#ifndef __has_feature // Optional of course.
37 #define __has_feature(x) 0 // Compatibility with non-clang compilers.
38#endif
39#ifndef __has_extension
40 #define __has_extension __has_feature // Compatibility with pre-3.0 compilers.
41#endif
42
43// The code below attempts to use information provided by the build system or
44// user supplied defines to selectively enable C++11 language and library
45// features. In most cases features that are targeted individually may also be
46// selectively disabled via an associated _WEBSOCKETPP_NOXXX_ define.
47
48#if defined(_WEBSOCKETPP_CPP11_STL_) || __cplusplus >= 201103L || defined(_WEBSOCKETPP_CPP11_STRICT_)
49 // This check tests for blanket c++11 coverage. It can be activated in one
50 // of three ways. Either the compiler itself reports that it is a full
51 // C++11 compiler via the __cplusplus macro or the user/build system
52 // supplies one of the two preprocessor defines below:
53
54 // This is defined to allow other WebSocket++ common headers to enable
55 // C++11 features when they are detected by this file rather than
56 // duplicating the above logic in every common header.
57 #define _WEBSOCKETPP_CPP11_INTERNAL_
58
59 // _WEBSOCKETPP_CPP11_STRICT_
60 //
61 // This define reports to WebSocket++ that 100% of the language and library
62 // features of C++11 are available. Using this define on a non-C++11
63 // compiler will result in problems.
64
65 // _WEBSOCKETPP_CPP11_STL_
66 //
67 // This define enables *most* C++11 options that were implemented early on
68 // by compilers. It is typically used for compilers that have many, but not
69 // all C++11 features. It should be safe to use on GCC 4.7-4.8 and perhaps
70 // earlier.
71 #ifndef _WEBSOCKETPP_NOEXCEPT_TOKEN_
72 #define _WEBSOCKETPP_NOEXCEPT_TOKEN_ noexcept
73 #endif
74 #ifndef _WEBSOCKETPP_CONSTEXPR_TOKEN_
75 #define _WEBSOCKETPP_CONSTEXPR_TOKEN_ constexpr
76 #endif
77 #ifndef _WEBSOCKETPP_INITIALIZER_LISTS_
78 #define _WEBSOCKETPP_INITIALIZER_LISTS_
79 #endif
80 #ifndef _WEBSOCKETPP_NULLPTR_TOKEN_
81 #define _WEBSOCKETPP_NULLPTR_TOKEN_ nullptr
82 #endif
83 #ifndef _WEBSOCKETPP_MOVE_SEMANTICS_
84 #define _WEBSOCKETPP_MOVE_SEMANTICS_
85 #endif
86 #ifndef _WEBSOCKETPP_DEFAULT_DELETE_FUNCTIONS_
87 #define _WEBSOCKETPP_DEFAULT_DELETE_FUNCTIONS_
88 #endif
89
90 #ifndef __GNUC__
91 // GCC as of version 4.9 (latest) does not support std::put_time yet.
92 // so ignore it
93 #define _WEBSOCKETPP_PUTTIME_
94 #endif
95#else
96 // In the absence of a blanket define, try to use compiler versions or
97 // feature testing macros to selectively enable what we can.
98
99 // Test for noexcept
100 #ifndef _WEBSOCKETPP_NOEXCEPT_TOKEN_
101 #ifdef _WEBSOCKETPP_NOEXCEPT_
102 // build system says we have noexcept
103 #define _WEBSOCKETPP_NOEXCEPT_TOKEN_ noexcept
104 #else
105 #if __has_feature(cxx_noexcept)
106 // clang feature detect says we have noexcept
107 #define _WEBSOCKETPP_NOEXCEPT_TOKEN_ noexcept
108 #elif defined(_MSC_VER) && _MSC_VER >= 1900
109 // Visual Studio 2015+ has noexcept
110 #define _WEBSOCKETPP_NOEXCEPT_TOKEN_ noexcept
111 #else
112 // assume we don't have noexcept
113 #define _WEBSOCKETPP_NOEXCEPT_TOKEN_
114 #endif
115 #endif
116 #endif
117
118 // Test for constexpr
119 #ifndef _WEBSOCKETPP_CONSTEXPR_TOKEN_
120 #ifdef _WEBSOCKETPP_CONSTEXPR_
121 // build system says we have constexpr
122 #define _WEBSOCKETPP_CONSTEXPR_TOKEN_ constexpr
123 #else
124 #if __has_feature(cxx_constexpr)
125 // clang feature detect says we have constexpr
126 #define _WEBSOCKETPP_CONSTEXPR_TOKEN_ constexpr
127 #elif defined(_MSC_VER) && _MSC_VER >= 1900
128 // Visual Studio 2015+ has constexpr
129 #define _WEBSOCKETPP_CONSTEXPR_TOKEN_ constexpr
130 #else
131 // assume we don't have constexpr
132 #define _WEBSOCKETPP_CONSTEXPR_TOKEN_
133 #endif
134 #endif
135 #endif
136
137 // Enable initializer lists on clang when available.
138 #if __has_feature(cxx_generalized_initializers) && !defined(_WEBSOCKETPP_INITIALIZER_LISTS_)
139 #define _WEBSOCKETPP_INITIALIZER_LISTS_
140 #endif
141
142 // Test for nullptr
143 #ifndef _WEBSOCKETPP_NULLPTR_TOKEN_
144 #ifdef _WEBSOCKETPP_NULLPTR_
145 // build system says we have nullptr
146 #define _WEBSOCKETPP_NULLPTR_TOKEN_ nullptr
147 #else
148 #if __has_feature(cxx_nullptr)
149 // clang feature detect says we have nullptr
150 #define _WEBSOCKETPP_NULLPTR_TOKEN_ nullptr
151 #elif defined(_MSC_VER) &&_MSC_VER >= 1600
152 // Visual Studio version that has nullptr
153 #define _WEBSOCKETPP_NULLPTR_TOKEN_ nullptr
154 #else
155 // assume we don't have nullptr
156 #define _WEBSOCKETPP_NULLPTR_TOKEN_ 0
157 #endif
158 #endif
159 #endif
160#endif
161
162#endif // WEBSOCKETPP_COMMON_CPP11_HPP
Concurrency policy that uses std::mutex / boost::mutex.
Definition basic.hpp:37
Stub for user supplied base class.
Stub for user supplied base class.
Stub class for use when disabling permessage_deflate extension.
Definition disabled.hpp:53
Stores, parses, and manipulates HTTP requests.
Definition request.hpp:50
Stores, parses, and manipulates HTTP responses.
Definition response.hpp:57
Basic logger that outputs to an ostream.
Definition basic.hpp:59
Thread safe stub "random" integer generator.
Definition none.hpp:46
Server endpoint role based on the given config.
Basic ASIO endpoint socket component.
Definition none.hpp:317
Asio based endpoint transport component.
Definition endpoint.hpp:54
#define __has_extension
Definition cpp11.hpp:40
#define __has_feature(x)
Definition cpp11.hpp:37
Concurrency handling support.
Definition basic.hpp:34
Implementation of RFC 7692, the permessage-deflate WebSocket extension.
Definition disabled.hpp:44
HTTP handling support.
Definition request.hpp:37
Stub RNG policy that always returns 0.
Definition none.hpp:35
Random number generation policies.
Transport policy that uses asio.
Definition endpoint.hpp:46
Transport policy that uses STL iostream for I/O and does not support timers.
Definition endpoint.hpp:43
Transport policies provide network connectivity and timers.
Definition endpoint.hpp:45
Namespace for the WebSocket++ project.
Server config with asio transport and TLS disabled.
static const long timeout_socket_shutdown
Length of time to wait for socket shutdown.
Definition core.hpp:137
static const long timeout_connect
Length of time to wait for TCP connect.
Definition core.hpp:134
static const long timeout_dns_resolve
Length of time to wait for dns resolution.
Definition core.hpp:131
static const long timeout_proxy
Length of time to wait before a proxy handshake is aborted.
Definition core.hpp:121
static const long timeout_socket_pre_init
Default timer values (in ms)
Definition core.hpp:118
static const long timeout_socket_post_init
Length of time to wait for socket post-initialization.
Definition core.hpp:128
Server config with iostream transport.
Definition core.hpp:68
websocketpp::random::none::int_generator< uint32_t > rng_type
RNG policies.
Definition core.hpp:93
static const websocketpp::log::level elog_level
Default static error logging channels.
Definition core.hpp:176
websocketpp::transport::iostream::endpoint< transport_config > transport_type
Transport Endpoint Component.
Definition core.hpp:142
static const size_t max_http_body_size
Default maximum http body size.
Definition core.hpp:252
static const long timeout_open_handshake
Default timer values (in ms)
Definition core.hpp:152
static const size_t max_message_size
Default maximum message size.
Definition core.hpp:240
static const bool drop_on_protocol_error
Drop connections immediately on protocol error.
Definition core.hpp:213
static const long timeout_close_handshake
Length of time before a closing handshake is aborted.
Definition core.hpp:154
static const websocketpp::log::level alog_level
Default static access logging channels.
Definition core.hpp:189
websocketpp::log::basic< concurrency_type, websocketpp::log::elevel > elog_type
Logging policies.
Definition core.hpp:88
static const long timeout_pong
Length of time to wait for a pong after a ping.
Definition core.hpp:156
static const bool silent_close
Suppresses the return of detailed connection close information.
Definition core.hpp:228
static bool const enable_multithreading
Definition core.hpp:98
static const size_t connection_read_buffer_size
Size of the per-connection read buffer.
Definition core.hpp:204
static const bool enable_extensions
Global flag for enabling/disabling extensions.
Definition core.hpp:255
static const int client_version
WebSocket Protocol version to use as a client.
Definition core.hpp:164
Package of log levels for logging access events.
Definition levels.hpp:112
static level const devel
Development messages (warning: very chatty)
Definition levels.hpp:141
static level const all
Special aggregate value representing "all levels".
Definition levels.hpp:152
Package of log levels for logging errors.
Definition levels.hpp:59
static level const devel
Low level debugging information (warning: very chatty)
Definition levels.hpp:63
static level const all
Special aggregate value representing "all levels".
Definition levels.hpp:80