WebSocket++ 0.8.2
C++ websocket client/server library
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random_device.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_RANDOM_RANDOM_DEVICE_HPP
29#define WEBSOCKETPP_RANDOM_RANDOM_DEVICE_HPP
30
31#include <websocketpp/common/random.hpp>
32
33namespace websocketpp {
34namespace random {
35/// RNG policy based on std::random_device or boost::random_device
36namespace random_device {
37
38/// Thread safe non-deterministic random integer generator.
39/**
40 * This template class provides thread safe non-deterministic random integer
41 * generation. Numbers are produced in a uniformly distributed range from the
42 * smallest to largest value that int_type can store.
43 *
44 * Thread-safety is provided via locking based on the concurrency template
45 * parameter.
46 *
47 * Non-deterministic RNG is provided via websocketpp::lib which uses either
48 * C++11 or Boost 1.47+'s random_device class.
49 *
50 * Call operator() to generate the next number
51 */
52template <typename int_type, typename concurrency>
53class int_generator {
54 public:
55 typedef typename concurrency::scoped_lock_type scoped_lock_type;
56 typedef typename concurrency::mutex_type mutex_type;
57
58 /// constructor
59 //mac TODO: figure out if signed types present a range problem
60 int_generator() {}
61
62 /// advances the engine's state and returns the generated value
63 int_type operator()() {
64 scoped_lock_type guard(m_lock);
65 return m_dis(m_rng);
66 }
67 private:
68
69
70 lib::random_device m_rng;
71 lib::uniform_int_distribution<int_type> m_dis;
72
73 mutex_type m_lock;
74};
75
76} // namespace random_device
77} // namespace random
78} // namespace websocketpp
79
80#endif //WEBSOCKETPP_RANDOM_RANDOM_DEVICE_HPP
Client endpoint role based on the given config.
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 non-deterministic random integer generator.
int_type operator()()
advances the engine's state and returns the generated value
Basic ASIO endpoint socket component.
Definition none.hpp:317
Asio based endpoint transport component.
Definition endpoint.hpp:54
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
RNG policy based on std::random_device or boost::random_device.
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.
Client config with asio transport and TLS disabled.
static const long timeout_dns_resolve
Length of time to wait for dns resolution.
static const long timeout_socket_shutdown
Length of time to wait for socket shutdown.
static const long timeout_socket_pre_init
Default timer values (in ms)
static const long timeout_proxy
Length of time to wait before a proxy handshake is aborted.
static const long timeout_connect
Length of time to wait for TCP connect.
static const long timeout_socket_post_init
Length of time to wait for socket post-initialization.
Client config with iostream transport.
static bool const enable_multithreading
static const bool enable_extensions
Global flag for enabling/disabling extensions.
websocketpp::log::basic< concurrency_type, websocketpp::log::elevel > elog_type
Logging policies.
static const websocketpp::log::level alog_level
Default static access logging channels.
static const size_t max_http_body_size
Default maximum http body size.
static const websocketpp::log::level elog_level
Default static error logging channels.
static const size_t max_message_size
Default maximum message size.
websocketpp::transport::iostream::endpoint< transport_config > transport_type
Transport Endpoint Component.
static const bool drop_on_protocol_error
Drop connections immediately on protocol error.
static const long timeout_close_handshake
Length of time before a closing handshake is aborted.
static const long timeout_open_handshake
Default timer values (in ms)
websocketpp::random::random_device::int_generator< uint32_t, concurrency_type > rng_type
RNG policies.
static const long timeout_pong
Length of time to wait for a pong after a ping.
static const int client_version
WebSocket Protocol version to use as a client.
static const bool silent_close
Suppresses the return of detailed connection close information.
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