Added thirdparty: boost library

thirdparty/include/boost/beast/websocket/detail/prng.hpp

@@ -0,0 +1,50 @@
+//
+// Copyright (c) 2016-2019 Vinnie Falco (vinnie dot falco at gmail dot com)
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+//
+// Official repository: https://github.com/boostorg/beast
+//
+
+#ifndef BOOST_BEAST_WEBSOCKET_DETAIL_PRNG_HPP
+#define BOOST_BEAST_WEBSOCKET_DETAIL_PRNG_HPP
+
+#include <boost/beast/core/detail/config.hpp>
+#include <boost/config.hpp>
+#include <cstdint>
+#include <random>
+
+namespace boost {
+namespace beast {
+namespace websocket {
+namespace detail {
+
+using generator = std::uint32_t(*)();
+
+//------------------------------------------------------------------------------
+
+// Manually seed the prngs, must be called
+// before acquiring a prng for the first time.
+//
+BOOST_BEAST_DECL
+std::uint32_t const*
+prng_seed(std::seed_seq* ss = nullptr);
+
+// Acquire a PRNG using the TLS implementation if it
+// is available, otherwise using the no-TLS implementation.
+//
+BOOST_BEAST_DECL
+generator
+make_prng(bool secure);
+
+} // detail
+} // websocket
+} // beast
+} // boost
+
+#ifdef BOOST_BEAST_HEADER_ONLY
+#include <boost/beast/websocket/detail/prng.ipp>
+#endif
+
+#endif