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-rw-r--r--3rdparty/asio/src/examples/cpp03/timeouts/server.cpp427
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diff --git a/3rdparty/asio/src/examples/cpp03/timeouts/server.cpp b/3rdparty/asio/src/examples/cpp03/timeouts/server.cpp
deleted file mode 100644
index 212cd90d820..00000000000
--- a/3rdparty/asio/src/examples/cpp03/timeouts/server.cpp
+++ /dev/null
@@ -1,427 +0,0 @@
-//
-// server.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 <algorithm>
-#include <cstdlib>
-#include <deque>
-#include <iostream>
-#include <set>
-#include <boost/bind.hpp>
-#include <boost/shared_ptr.hpp>
-#include <boost/enable_shared_from_this.hpp>
-#include "asio/deadline_timer.hpp"
-#include "asio/io_context.hpp"
-#include "asio/ip/tcp.hpp"
-#include "asio/ip/udp.hpp"
-#include "asio/read_until.hpp"
-#include "asio/streambuf.hpp"
-#include "asio/write.hpp"
-
-using asio::deadline_timer;
-using asio::ip::tcp;
-using asio::ip::udp;
-
-//----------------------------------------------------------------------
-
-class subscriber
-{
-public:
- virtual ~subscriber() {}
- virtual void deliver(const std::string& msg) = 0;
-};
-
-typedef boost::shared_ptr<subscriber> subscriber_ptr;
-
-//----------------------------------------------------------------------
-
-class channel
-{
-public:
- void join(subscriber_ptr subscriber)
- {
- subscribers_.insert(subscriber);
- }
-
- void leave(subscriber_ptr subscriber)
- {
- subscribers_.erase(subscriber);
- }
-
- void deliver(const std::string& msg)
- {
- std::for_each(subscribers_.begin(), subscribers_.end(),
- boost::bind(&subscriber::deliver, _1, boost::ref(msg)));
- }
-
-private:
- std::set<subscriber_ptr> subscribers_;
-};
-
-//----------------------------------------------------------------------
-
-//
-// This class manages socket timeouts by applying the concept of a deadline.
-// Some asynchronous operations are given deadlines by which they must complete.
-// Deadlines are enforced by two "actors" that persist for the lifetime of the
-// session object, one for input and one for output:
-//
-// +----------------+ +----------------+
-// | | | |
-// | check_deadline |<---+ | check_deadline |<---+
-// | | | async_wait() | | | async_wait()
-// +----------------+ | on input +----------------+ | on output
-// | | deadline | | deadline
-// +---------+ +---------+
-//
-// If either deadline actor determines that the corresponding deadline has
-// expired, the socket is closed and any outstanding operations are cancelled.
-//
-// The input actor reads messages from the socket, where messages are delimited
-// by the newline character:
-//
-// +------------+
-// | |
-// | start_read |<---+
-// | | |
-// +------------+ |
-// | |
-// async_- | +-------------+
-// read_- | | |
-// until() +--->| handle_read |
-// | |
-// +-------------+
-//
-// The deadline for receiving a complete message is 30 seconds. If a non-empty
-// message is received, it is delivered to all subscribers. If a heartbeat (a
-// message that consists of a single newline character) is received, a heartbeat
-// is enqueued for the client, provided there are no other messages waiting to
-// be sent.
-//
-// The output actor is responsible for sending messages to the client:
-//
-// +--------------+
-// | |<---------------------+
-// | await_output | |
-// | |<---+ |
-// +--------------+ | |
-// | | | async_wait() |
-// | +--------+ |
-// V |
-// +-------------+ +--------------+
-// | | async_write() | |
-// | start_write |-------------->| handle_write |
-// | | | |
-// +-------------+ +--------------+
-//
-// The output actor first waits for an output message to be enqueued. It does
-// this by using a deadline_timer as an asynchronous condition variable. The
-// deadline_timer will be signalled whenever the output queue is non-empty.
-//
-// Once a message is available, it is sent to the client. The deadline for
-// sending a complete message is 30 seconds. After the message is successfully
-// sent, the output actor again waits for the output queue to become non-empty.
-//
-class tcp_session
- : public subscriber,
- public boost::enable_shared_from_this<tcp_session>
-{
-public:
- tcp_session(asio::io_context& io_context, channel& ch)
- : channel_(ch),
- socket_(io_context),
- input_deadline_(io_context),
- non_empty_output_queue_(io_context),
- output_deadline_(io_context)
- {
- input_deadline_.expires_at(boost::posix_time::pos_infin);
- output_deadline_.expires_at(boost::posix_time::pos_infin);
-
- // The non_empty_output_queue_ deadline_timer is set to pos_infin whenever
- // the output queue is empty. This ensures that the output actor stays
- // asleep until a message is put into the queue.
- non_empty_output_queue_.expires_at(boost::posix_time::pos_infin);
- }
-
- tcp::socket& socket()
- {
- return socket_;
- }
-
- // Called by the server object to initiate the four actors.
- void start()
- {
- channel_.join(shared_from_this());
-
- start_read();
-
- input_deadline_.async_wait(
- boost::bind(&tcp_session::check_deadline,
- shared_from_this(), &input_deadline_));
-
- await_output();
-
- output_deadline_.async_wait(
- boost::bind(&tcp_session::check_deadline,
- shared_from_this(), &output_deadline_));
- }
-
-private:
- void stop()
- {
- channel_.leave(shared_from_this());
-
- asio::error_code ignored_ec;
- socket_.close(ignored_ec);
- input_deadline_.cancel();
- non_empty_output_queue_.cancel();
- output_deadline_.cancel();
- }
-
- bool stopped() const
- {
- return !socket_.is_open();
- }
-
- void deliver(const std::string& msg)
- {
- output_queue_.push_back(msg + "\n");
-
- // Signal that the output queue contains messages. Modifying the expiry
- // will wake the output actor, if it is waiting on the timer.
- non_empty_output_queue_.expires_at(boost::posix_time::neg_infin);
- }
-
- void start_read()
- {
- // Set a deadline for the read operation.
- input_deadline_.expires_from_now(boost::posix_time::seconds(30));
-
- // Start an asynchronous operation to read a newline-delimited message.
- asio::async_read_until(socket_, input_buffer_, '\n',
- boost::bind(&tcp_session::handle_read, shared_from_this(), _1));
- }
-
- void handle_read(const asio::error_code& ec)
- {
- if (stopped())
- return;
-
- if (!ec)
- {
- // Extract the newline-delimited message from the buffer.
- std::string msg;
- std::istream is(&input_buffer_);
- std::getline(is, msg);
-
- if (!msg.empty())
- {
- channel_.deliver(msg);
- }
- else
- {
- // We received a heartbeat message from the client. If there's nothing
- // else being sent or ready to be sent, send a heartbeat right back.
- if (output_queue_.empty())
- {
- output_queue_.push_back("\n");
-
- // Signal that the output queue contains messages. Modifying the
- // expiry will wake the output actor, if it is waiting on the timer.
- non_empty_output_queue_.expires_at(boost::posix_time::neg_infin);
- }
- }
-
- start_read();
- }
- else
- {
- stop();
- }
- }
-
- void await_output()
- {
- if (stopped())
- return;
-
- if (output_queue_.empty())
- {
- // There are no messages that are ready to be sent. The actor goes to
- // sleep by waiting on the non_empty_output_queue_ timer. When a new
- // message is added, the timer will be modified and the actor will wake.
- non_empty_output_queue_.expires_at(boost::posix_time::pos_infin);
- non_empty_output_queue_.async_wait(
- boost::bind(&tcp_session::await_output, shared_from_this()));
- }
- else
- {
- start_write();
- }
- }
-
- void start_write()
- {
- // Set a deadline for the write operation.
- output_deadline_.expires_from_now(boost::posix_time::seconds(30));
-
- // Start an asynchronous operation to send a message.
- asio::async_write(socket_,
- asio::buffer(output_queue_.front()),
- boost::bind(&tcp_session::handle_write, shared_from_this(), _1));
- }
-
- void handle_write(const asio::error_code& ec)
- {
- if (stopped())
- return;
-
- if (!ec)
- {
- output_queue_.pop_front();
-
- await_output();
- }
- else
- {
- stop();
- }
- }
-
- void check_deadline(deadline_timer* deadline)
- {
- if (stopped())
- return;
-
- // Check whether the deadline has passed. We compare the deadline against
- // the current time since a new asynchronous operation may have moved the
- // deadline before this actor had a chance to run.
- if (deadline->expires_at() <= deadline_timer::traits_type::now())
- {
- // The deadline has passed. Stop the session. The other actors will
- // terminate as soon as possible.
- stop();
- }
- else
- {
- // Put the actor back to sleep.
- deadline->async_wait(
- boost::bind(&tcp_session::check_deadline,
- shared_from_this(), deadline));
- }
- }
-
- channel& channel_;
- tcp::socket socket_;
- asio::streambuf input_buffer_;
- deadline_timer input_deadline_;
- std::deque<std::string> output_queue_;
- deadline_timer non_empty_output_queue_;
- deadline_timer output_deadline_;
-};
-
-typedef boost::shared_ptr<tcp_session> tcp_session_ptr;
-
-//----------------------------------------------------------------------
-
-class udp_broadcaster
- : public subscriber
-{
-public:
- udp_broadcaster(asio::io_context& io_context,
- const udp::endpoint& broadcast_endpoint)
- : socket_(io_context)
- {
- socket_.connect(broadcast_endpoint);
- }
-
-private:
- void deliver(const std::string& msg)
- {
- asio::error_code ignored_ec;
- socket_.send(asio::buffer(msg), 0, ignored_ec);
- }
-
- udp::socket socket_;
-};
-
-//----------------------------------------------------------------------
-
-class server
-{
-public:
- server(asio::io_context& io_context,
- const tcp::endpoint& listen_endpoint,
- const udp::endpoint& broadcast_endpoint)
- : io_context_(io_context),
- acceptor_(io_context, listen_endpoint)
- {
- subscriber_ptr bc(new udp_broadcaster(io_context_, broadcast_endpoint));
- channel_.join(bc);
-
- start_accept();
- }
-
- void start_accept()
- {
- tcp_session_ptr new_session(new tcp_session(io_context_, channel_));
-
- acceptor_.async_accept(new_session->socket(),
- boost::bind(&server::handle_accept, this, new_session, _1));
- }
-
- void handle_accept(tcp_session_ptr session,
- const asio::error_code& ec)
- {
- if (!ec)
- {
- session->start();
- }
-
- start_accept();
- }
-
-private:
- asio::io_context& io_context_;
- tcp::acceptor acceptor_;
- channel channel_;
-};
-
-//----------------------------------------------------------------------
-
-int main(int argc, char* argv[])
-{
- try
- {
- using namespace std; // For atoi.
-
- if (argc != 4)
- {
- std::cerr << "Usage: server <listen_port> <bcast_address> <bcast_port>\n";
- return 1;
- }
-
- asio::io_context io_context;
-
- tcp::endpoint listen_endpoint(tcp::v4(), atoi(argv[1]));
-
- udp::endpoint broadcast_endpoint(
- asio::ip::make_address(argv[2]), atoi(argv[3]));
-
- server s(io_context, listen_endpoint, broadcast_endpoint);
-
- io_context.run();
- }
- catch (std::exception& e)
- {
- std::cerr << "Exception: " << e.what() << "\n";
- }
-
- return 0;
-}