diff options
author | 2016-10-07 14:13:19 +0200 | |
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committer | 2016-10-07 14:13:19 +0200 | |
commit | ff01b716711b97c2fcaa709ea97f7650f106aa10 (patch) | |
tree | 50dd4d687f38f50c4e136af030c02c267c769f3a /3rdparty/asio/src/examples/cpp11/chat | |
parent | 2a138159c30457aecd9e9679be5159704db0f954 (diff) |
Added ASIO networking library (nw)
Diffstat (limited to '3rdparty/asio/src/examples/cpp11/chat')
-rw-r--r-- | 3rdparty/asio/src/examples/cpp11/chat/.gitignore | 11 | ||||
-rw-r--r-- | 3rdparty/asio/src/examples/cpp11/chat/chat_client.cpp | 167 | ||||
-rw-r--r-- | 3rdparty/asio/src/examples/cpp11/chat/chat_message.hpp | 91 | ||||
-rw-r--r-- | 3rdparty/asio/src/examples/cpp11/chat/chat_server.cpp | 227 |
4 files changed, 496 insertions, 0 deletions
diff --git a/3rdparty/asio/src/examples/cpp11/chat/.gitignore b/3rdparty/asio/src/examples/cpp11/chat/.gitignore new file mode 100644 index 00000000000..0882fa6ced3 --- /dev/null +++ b/3rdparty/asio/src/examples/cpp11/chat/.gitignore @@ -0,0 +1,11 @@ +.deps +.dirstamp +*.o +*.obj +*.exe +*_server +*_client +*.ilk +*.manifest +*.pdb +*.tds diff --git a/3rdparty/asio/src/examples/cpp11/chat/chat_client.cpp b/3rdparty/asio/src/examples/cpp11/chat/chat_client.cpp new file mode 100644 index 00000000000..e672a022d04 --- /dev/null +++ b/3rdparty/asio/src/examples/cpp11/chat/chat_client.cpp @@ -0,0 +1,167 @@ +// +// chat_client.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 <thread> +#include "asio.hpp" +#include "chat_message.hpp" + +using asio::ip::tcp; + +typedef std::deque<chat_message> chat_message_queue; + +class chat_client +{ +public: + chat_client(asio::io_context& io_context, + const tcp::resolver::results_type& endpoints) + : io_context_(io_context), + socket_(io_context) + { + do_connect(endpoints); + } + + void write(const chat_message& msg) + { + asio::post(io_context_, + [this, msg]() + { + bool write_in_progress = !write_msgs_.empty(); + write_msgs_.push_back(msg); + if (!write_in_progress) + { + do_write(); + } + }); + } + + void close() + { + asio::post(io_context_, [this]() { socket_.close(); }); + } + +private: + void do_connect(const tcp::resolver::results_type& endpoints) + { + asio::async_connect(socket_, endpoints, + [this](std::error_code ec, tcp::endpoint) + { + if (!ec) + { + do_read_header(); + } + }); + } + + void do_read_header() + { + asio::async_read(socket_, + asio::buffer(read_msg_.data(), chat_message::header_length), + [this](std::error_code ec, std::size_t /*length*/) + { + if (!ec && read_msg_.decode_header()) + { + do_read_body(); + } + else + { + socket_.close(); + } + }); + } + + void do_read_body() + { + asio::async_read(socket_, + asio::buffer(read_msg_.body(), read_msg_.body_length()), + [this](std::error_code ec, std::size_t /*length*/) + { + if (!ec) + { + std::cout.write(read_msg_.body(), read_msg_.body_length()); + std::cout << "\n"; + do_read_header(); + } + else + { + socket_.close(); + } + }); + } + + void do_write() + { + asio::async_write(socket_, + asio::buffer(write_msgs_.front().data(), + write_msgs_.front().length()), + [this](std::error_code ec, std::size_t /*length*/) + { + if (!ec) + { + write_msgs_.pop_front(); + if (!write_msgs_.empty()) + { + do_write(); + } + } + else + { + socket_.close(); + } + }); + } + +private: + asio::io_context& io_context_; + tcp::socket socket_; + chat_message read_msg_; + chat_message_queue write_msgs_; +}; + +int main(int argc, char* argv[]) +{ + try + { + if (argc != 3) + { + std::cerr << "Usage: chat_client <host> <port>\n"; + return 1; + } + + asio::io_context io_context; + + tcp::resolver resolver(io_context); + auto endpoints = resolver.resolve(argv[1], argv[2]); + chat_client c(io_context, endpoints); + + std::thread t([&io_context](){ io_context.run(); }); + + char line[chat_message::max_body_length + 1]; + while (std::cin.getline(line, chat_message::max_body_length + 1)) + { + chat_message msg; + msg.body_length(std::strlen(line)); + std::memcpy(msg.body(), line, msg.body_length()); + msg.encode_header(); + c.write(msg); + } + + c.close(); + t.join(); + } + catch (std::exception& e) + { + std::cerr << "Exception: " << e.what() << "\n"; + } + + return 0; +} diff --git a/3rdparty/asio/src/examples/cpp11/chat/chat_message.hpp b/3rdparty/asio/src/examples/cpp11/chat/chat_message.hpp new file mode 100644 index 00000000000..f6e949bf2e2 --- /dev/null +++ b/3rdparty/asio/src/examples/cpp11/chat/chat_message.hpp @@ -0,0 +1,91 @@ +// +// chat_message.hpp +// ~~~~~~~~~~~~~~~~ +// +// 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) +// + +#ifndef CHAT_MESSAGE_HPP +#define CHAT_MESSAGE_HPP + +#include <cstdio> +#include <cstdlib> +#include <cstring> + +class chat_message +{ +public: + enum { header_length = 4 }; + enum { max_body_length = 512 }; + + chat_message() + : body_length_(0) + { + } + + const char* data() const + { + return data_; + } + + char* data() + { + return data_; + } + + std::size_t length() const + { + return header_length + body_length_; + } + + const char* body() const + { + return data_ + header_length; + } + + char* body() + { + return data_ + header_length; + } + + std::size_t body_length() const + { + return body_length_; + } + + void body_length(std::size_t new_length) + { + body_length_ = new_length; + if (body_length_ > max_body_length) + body_length_ = max_body_length; + } + + bool decode_header() + { + char header[header_length + 1] = ""; + std::strncat(header, data_, header_length); + body_length_ = std::atoi(header); + if (body_length_ > max_body_length) + { + body_length_ = 0; + return false; + } + return true; + } + + void encode_header() + { + char header[header_length + 1] = ""; + std::sprintf(header, "%4d", static_cast<int>(body_length_)); + std::memcpy(data_, header, header_length); + } + +private: + char data_[header_length + max_body_length]; + std::size_t body_length_; +}; + +#endif // CHAT_MESSAGE_HPP 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; +} |