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author Miodrag Milanovic <mmicko@gmail.com>2016-10-07 14:13:19 +0200
committer Miodrag Milanovic <mmicko@gmail.com>2016-10-07 14:13:19 +0200
commitff01b716711b97c2fcaa709ea97f7650f106aa10 (patch)
tree50dd4d687f38f50c4e136af030c02c267c769f3a /3rdparty/asio/src/examples/cpp11/chat/chat_server.cpp
parent2a138159c30457aecd9e9679be5159704db0f954 (diff)
Added ASIO networking library (nw)
Diffstat (limited to '3rdparty/asio/src/examples/cpp11/chat/chat_server.cpp')
-rw-r--r--3rdparty/asio/src/examples/cpp11/chat/chat_server.cpp227
1 files changed, 227 insertions, 0 deletions
diff --git a/3rdparty/asio/src/examples/cpp11/chat/chat_server.cpp b/3rdparty/asio/src/examples/cpp11/chat/chat_server.cpp
new file mode 100644
index 00000000000..6e5ba3b8ee2
--- /dev/null
+++ b/3rdparty/asio/src/examples/cpp11/chat/chat_server.cpp
@@ -0,0 +1,227 @@
+//
+// chat_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 <cstdlib>
+#include <deque>
+#include <iostream>
+#include <list>
+#include <memory>
+#include <set>
+#include <utility>
+#include "asio.hpp"
+#include "chat_message.hpp"
+
+using asio::ip::tcp;
+
+//----------------------------------------------------------------------
+
+typedef std::deque<chat_message> chat_message_queue;
+
+//----------------------------------------------------------------------
+
+class chat_participant
+{
+public:
+ virtual ~chat_participant() {}
+ virtual void deliver(const chat_message& msg) = 0;
+};
+
+typedef std::shared_ptr<chat_participant> chat_participant_ptr;
+
+//----------------------------------------------------------------------
+
+class chat_room
+{
+public:
+ void join(chat_participant_ptr participant)
+ {
+ participants_.insert(participant);
+ for (auto msg: recent_msgs_)
+ participant->deliver(msg);
+ }
+
+ void leave(chat_participant_ptr participant)
+ {
+ participants_.erase(participant);
+ }
+
+ void deliver(const chat_message& msg)
+ {
+ recent_msgs_.push_back(msg);
+ while (recent_msgs_.size() > max_recent_msgs)
+ recent_msgs_.pop_front();
+
+ for (auto participant: participants_)
+ participant->deliver(msg);
+ }
+
+private:
+ std::set<chat_participant_ptr> participants_;
+ enum { max_recent_msgs = 100 };
+ chat_message_queue recent_msgs_;
+};
+
+//----------------------------------------------------------------------
+
+class chat_session
+ : public chat_participant,
+ public std::enable_shared_from_this<chat_session>
+{
+public:
+ chat_session(tcp::socket socket, chat_room& room)
+ : socket_(std::move(socket)),
+ room_(room)
+ {
+ }
+
+ void start()
+ {
+ room_.join(shared_from_this());
+ do_read_header();
+ }
+
+ void deliver(const chat_message& msg)
+ {
+ bool write_in_progress = !write_msgs_.empty();
+ write_msgs_.push_back(msg);
+ if (!write_in_progress)
+ {
+ do_write();
+ }
+ }
+
+private:
+ void do_read_header()
+ {
+ auto self(shared_from_this());
+ asio::async_read(socket_,
+ asio::buffer(read_msg_.data(), chat_message::header_length),
+ [this, self](std::error_code ec, std::size_t /*length*/)
+ {
+ if (!ec && read_msg_.decode_header())
+ {
+ do_read_body();
+ }
+ else
+ {
+ room_.leave(shared_from_this());
+ }
+ });
+ }
+
+ void do_read_body()
+ {
+ auto self(shared_from_this());
+ asio::async_read(socket_,
+ asio::buffer(read_msg_.body(), read_msg_.body_length()),
+ [this, self](std::error_code ec, std::size_t /*length*/)
+ {
+ if (!ec)
+ {
+ room_.deliver(read_msg_);
+ do_read_header();
+ }
+ else
+ {
+ room_.leave(shared_from_this());
+ }
+ });
+ }
+
+ void do_write()
+ {
+ auto self(shared_from_this());
+ asio::async_write(socket_,
+ asio::buffer(write_msgs_.front().data(),
+ write_msgs_.front().length()),
+ [this, self](std::error_code ec, std::size_t /*length*/)
+ {
+ if (!ec)
+ {
+ write_msgs_.pop_front();
+ if (!write_msgs_.empty())
+ {
+ do_write();
+ }
+ }
+ else
+ {
+ room_.leave(shared_from_this());
+ }
+ });
+ }
+
+ tcp::socket socket_;
+ chat_room& room_;
+ chat_message read_msg_;
+ chat_message_queue write_msgs_;
+};
+
+//----------------------------------------------------------------------
+
+class chat_server
+{
+public:
+ chat_server(asio::io_context& io_context,
+ const tcp::endpoint& endpoint)
+ : acceptor_(io_context, endpoint)
+ {
+ do_accept();
+ }
+
+private:
+ void do_accept()
+ {
+ acceptor_.async_accept(
+ [this](std::error_code ec, tcp::socket socket)
+ {
+ if (!ec)
+ {
+ std::make_shared<chat_session>(std::move(socket), room_)->start();
+ }
+
+ do_accept();
+ });
+ }
+
+ tcp::acceptor acceptor_;
+ chat_room room_;
+};
+
+//----------------------------------------------------------------------
+
+int main(int argc, char* argv[])
+{
+ try
+ {
+ if (argc < 2)
+ {
+ std::cerr << "Usage: chat_server <port> [<port> ...]\n";
+ return 1;
+ }
+
+ asio::io_context io_context;
+
+ std::list<chat_server> servers;
+ for (int i = 1; i < argc; ++i)
+ {
+ tcp::endpoint endpoint(tcp::v4(), std::atoi(argv[i]));
+ servers.emplace_back(io_context, endpoint);
+ }
+
+ io_context.run();
+ }
+ catch (std::exception& e)
+ {
+ std::cerr << "Exception: " << e.what() << "\n";
+ }
+
+ return 0;
+}