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-rw-r--r--3rdparty/asio/src/examples/cpp11/buffers/reference_counted.cpp121
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diff --git a/3rdparty/asio/src/examples/cpp11/buffers/reference_counted.cpp b/3rdparty/asio/src/examples/cpp11/buffers/reference_counted.cpp
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+//
+// reference_counted.cpp
+// ~~~~~~~~~~~~~~~~~~~~~
+//
+// Copyright (c) 2003-2016 Christopher M. Kohlhoff (chris at kohlhoff 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)
+//
+
+#include <asio.hpp>
+#include <iostream>
+#include <memory>
+#include <utility>
+#include <vector>
+
+using asio::ip::tcp;
+
+// A reference-counted non-modifiable buffer class.
+class shared_const_buffer
+{
+public:
+ // Construct from a std::string.
+ explicit shared_const_buffer(const std::string& data)
+ : data_(new std::vector<char>(data.begin(), data.end())),
+ buffer_(asio::buffer(*data_))
+ {
+ }
+
+ // Implement the ConstBufferSequence requirements.
+ typedef asio::const_buffer value_type;
+ typedef const asio::const_buffer* const_iterator;
+ const asio::const_buffer* begin() const { return &buffer_; }
+ const asio::const_buffer* end() const { return &buffer_ + 1; }
+
+private:
+ std::shared_ptr<std::vector<char> > data_;
+ asio::const_buffer buffer_;
+};
+
+class session
+ : public std::enable_shared_from_this<session>
+{
+public:
+ session(tcp::socket socket)
+ : socket_(std::move(socket))
+ {
+ }
+
+ void start()
+ {
+ do_write();
+ }
+
+private:
+ void do_write()
+ {
+ std::time_t now = std::time(0);
+ shared_const_buffer buffer(std::ctime(&now));
+
+ auto self(shared_from_this());
+ asio::async_write(socket_, buffer,
+ [this, self](std::error_code /*ec*/, std::size_t /*length*/)
+ {
+ });
+ }
+
+ // The socket used to communicate with the client.
+ tcp::socket socket_;
+};
+
+class server
+{
+public:
+ server(asio::io_context& io_context, short port)
+ : acceptor_(io_context, tcp::endpoint(tcp::v4(), port))
+ {
+ do_accept();
+ }
+
+private:
+ void do_accept()
+ {
+ acceptor_.async_accept(
+ [this](std::error_code ec, tcp::socket socket)
+ {
+ if (!ec)
+ {
+ std::make_shared<session>(std::move(socket))->start();
+ }
+
+ do_accept();
+ });
+ }
+
+ tcp::acceptor acceptor_;
+};
+
+int main(int argc, char* argv[])
+{
+ try
+ {
+ if (argc != 2)
+ {
+ std::cerr << "Usage: reference_counted <port>\n";
+ return 1;
+ }
+
+ asio::io_context io_context;
+
+ server s(io_context, std::atoi(argv[1]));
+
+ io_context.run();
+ }
+ catch (std::exception& e)
+ {
+ std::cerr << "Exception: " << e.what() << "\n";
+ }
+
+ return 0;
+}