diff options
author | 2016-10-07 14:13:19 +0200 | |
---|---|---|
committer | 2016-10-07 14:13:19 +0200 | |
commit | ff01b716711b97c2fcaa709ea97f7650f106aa10 (patch) | |
tree | 50dd4d687f38f50c4e136af030c02c267c769f3a /3rdparty/asio/src/examples/cpp03/serialization | |
parent | 2a138159c30457aecd9e9679be5159704db0f954 (diff) |
Added ASIO networking library (nw)
Diffstat (limited to '3rdparty/asio/src/examples/cpp03/serialization')
5 files changed, 497 insertions, 0 deletions
diff --git a/3rdparty/asio/src/examples/cpp03/serialization/.gitignore b/3rdparty/asio/src/examples/cpp03/serialization/.gitignore new file mode 100644 index 00000000000..692ea7e7e65 --- /dev/null +++ b/3rdparty/asio/src/examples/cpp03/serialization/.gitignore @@ -0,0 +1,11 @@ +.deps +.dirstamp +*.o +*.obj +*.exe +client +server +*.ilk +*.manifest +*.pdb +*.tds diff --git a/3rdparty/asio/src/examples/cpp03/serialization/client.cpp b/3rdparty/asio/src/examples/cpp03/serialization/client.cpp new file mode 100644 index 00000000000..8b83de284f4 --- /dev/null +++ b/3rdparty/asio/src/examples/cpp03/serialization/client.cpp @@ -0,0 +1,125 @@ +// +// 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 <asio.hpp> +#include <boost/bind.hpp> +#include <iostream> +#include <vector> +#include "connection.hpp" // Must come before boost/serialization headers. +#include <boost/serialization/vector.hpp> +#include "stock.hpp" + +namespace s11n_example { + +/// Downloads stock quote information from a server. +class client +{ +public: + /// Constructor starts the asynchronous connect operation. + client(asio::io_context& io_context, + const std::string& host, const std::string& service) + : connection_(io_context) + { + // Resolve the host name into an IP address. + asio::ip::tcp::resolver resolver(io_context); + asio::ip::tcp::resolver::query query(host, service); + asio::ip::tcp::resolver::iterator endpoint_iterator = + resolver.resolve(query); + + // Start an asynchronous connect operation. + asio::async_connect(connection_.socket(), endpoint_iterator, + boost::bind(&client::handle_connect, this, + asio::placeholders::error)); + } + + /// Handle completion of a connect operation. + void handle_connect(const asio::error_code& e) + { + if (!e) + { + // Successfully established connection. Start operation to read the list + // of stocks. The connection::async_read() function will automatically + // decode the data that is read from the underlying socket. + connection_.async_read(stocks_, + boost::bind(&client::handle_read, this, + asio::placeholders::error)); + } + else + { + // An error occurred. Log it and return. Since we are not starting a new + // operation the io_context will run out of work to do and the client will + // exit. + std::cerr << e.message() << std::endl; + } + } + + /// Handle completion of a read operation. + void handle_read(const asio::error_code& e) + { + if (!e) + { + // Print out the data that was received. + for (std::size_t i = 0; i < stocks_.size(); ++i) + { + std::cout << "Stock number " << i << "\n"; + std::cout << " code: " << stocks_[i].code << "\n"; + std::cout << " name: " << stocks_[i].name << "\n"; + std::cout << " open_price: " << stocks_[i].open_price << "\n"; + std::cout << " high_price: " << stocks_[i].high_price << "\n"; + std::cout << " low_price: " << stocks_[i].low_price << "\n"; + std::cout << " last_price: " << stocks_[i].last_price << "\n"; + std::cout << " buy_price: " << stocks_[i].buy_price << "\n"; + std::cout << " buy_quantity: " << stocks_[i].buy_quantity << "\n"; + std::cout << " sell_price: " << stocks_[i].sell_price << "\n"; + std::cout << " sell_quantity: " << stocks_[i].sell_quantity << "\n"; + } + } + else + { + // An error occurred. + std::cerr << e.message() << std::endl; + } + + // Since we are not starting a new operation the io_context will run out of + // work to do and the client will exit. + } + +private: + /// The connection to the server. + connection connection_; + + /// The data received from the server. + std::vector<stock> stocks_; +}; + +} // namespace s11n_example + +int main(int argc, char* argv[]) +{ + try + { + // Check command line arguments. + if (argc != 3) + { + std::cerr << "Usage: client <host> <port>" << std::endl; + return 1; + } + + asio::io_context io_context; + s11n_example::client client(io_context, argv[1], argv[2]); + io_context.run(); + } + catch (std::exception& e) + { + std::cerr << e.what() << std::endl; + } + + return 0; +} diff --git a/3rdparty/asio/src/examples/cpp03/serialization/connection.hpp b/3rdparty/asio/src/examples/cpp03/serialization/connection.hpp new file mode 100644 index 00000000000..a1fa2a19e8e --- /dev/null +++ b/3rdparty/asio/src/examples/cpp03/serialization/connection.hpp @@ -0,0 +1,188 @@ +// +// connection.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 SERIALIZATION_CONNECTION_HPP +#define SERIALIZATION_CONNECTION_HPP + +#include <asio.hpp> +#include <boost/archive/text_iarchive.hpp> +#include <boost/archive/text_oarchive.hpp> +#include <boost/bind.hpp> +#include <boost/shared_ptr.hpp> +#include <boost/tuple/tuple.hpp> +#include <iomanip> +#include <string> +#include <sstream> +#include <vector> + +namespace s11n_example { + +/// The connection class provides serialization primitives on top of a socket. +/** + * Each message sent using this class consists of: + * @li An 8-byte header containing the length of the serialized data in + * hexadecimal. + * @li The serialized data. + */ +class connection +{ +public: + /// Constructor. + connection(asio::io_context& io_context) + : socket_(io_context) + { + } + + /// Get the underlying socket. Used for making a connection or for accepting + /// an incoming connection. + asio::ip::tcp::socket& socket() + { + return socket_; + } + + /// Asynchronously write a data structure to the socket. + template <typename T, typename Handler> + void async_write(const T& t, Handler handler) + { + // Serialize the data first so we know how large it is. + std::ostringstream archive_stream; + boost::archive::text_oarchive archive(archive_stream); + archive << t; + outbound_data_ = archive_stream.str(); + + // Format the header. + std::ostringstream header_stream; + header_stream << std::setw(header_length) + << std::hex << outbound_data_.size(); + if (!header_stream || header_stream.str().size() != header_length) + { + // Something went wrong, inform the caller. + asio::error_code error(asio::error::invalid_argument); + socket_.get_io_context().post(boost::bind(handler, error)); + return; + } + outbound_header_ = header_stream.str(); + + // Write the serialized data to the socket. We use "gather-write" to send + // both the header and the data in a single write operation. + std::vector<asio::const_buffer> buffers; + buffers.push_back(asio::buffer(outbound_header_)); + buffers.push_back(asio::buffer(outbound_data_)); + asio::async_write(socket_, buffers, handler); + } + + /// Asynchronously read a data structure from the socket. + template <typename T, typename Handler> + void async_read(T& t, Handler handler) + { + // Issue a read operation to read exactly the number of bytes in a header. + void (connection::*f)( + const asio::error_code&, + T&, boost::tuple<Handler>) + = &connection::handle_read_header<T, Handler>; + asio::async_read(socket_, asio::buffer(inbound_header_), + boost::bind(f, + this, asio::placeholders::error, boost::ref(t), + boost::make_tuple(handler))); + } + + /// Handle a completed read of a message header. The handler is passed using + /// a tuple since boost::bind seems to have trouble binding a function object + /// created using boost::bind as a parameter. + template <typename T, typename Handler> + void handle_read_header(const asio::error_code& e, + T& t, boost::tuple<Handler> handler) + { + if (e) + { + boost::get<0>(handler)(e); + } + else + { + // Determine the length of the serialized data. + std::istringstream is(std::string(inbound_header_, header_length)); + std::size_t inbound_data_size = 0; + if (!(is >> std::hex >> inbound_data_size)) + { + // Header doesn't seem to be valid. Inform the caller. + asio::error_code error(asio::error::invalid_argument); + boost::get<0>(handler)(error); + return; + } + + // Start an asynchronous call to receive the data. + inbound_data_.resize(inbound_data_size); + void (connection::*f)( + const asio::error_code&, + T&, boost::tuple<Handler>) + = &connection::handle_read_data<T, Handler>; + asio::async_read(socket_, asio::buffer(inbound_data_), + boost::bind(f, this, + asio::placeholders::error, boost::ref(t), handler)); + } + } + + /// Handle a completed read of message data. + template <typename T, typename Handler> + void handle_read_data(const asio::error_code& e, + T& t, boost::tuple<Handler> handler) + { + if (e) + { + boost::get<0>(handler)(e); + } + else + { + // Extract the data structure from the data just received. + try + { + std::string archive_data(&inbound_data_[0], inbound_data_.size()); + std::istringstream archive_stream(archive_data); + boost::archive::text_iarchive archive(archive_stream); + archive >> t; + } + catch (std::exception& e) + { + // Unable to decode data. + asio::error_code error(asio::error::invalid_argument); + boost::get<0>(handler)(error); + return; + } + + // Inform caller that data has been received ok. + boost::get<0>(handler)(e); + } + } + +private: + /// The underlying socket. + asio::ip::tcp::socket socket_; + + /// The size of a fixed length header. + enum { header_length = 8 }; + + /// Holds an outbound header. + std::string outbound_header_; + + /// Holds the outbound data. + std::string outbound_data_; + + /// Holds an inbound header. + char inbound_header_[header_length]; + + /// Holds the inbound data. + std::vector<char> inbound_data_; +}; + +typedef boost::shared_ptr<connection> connection_ptr; + +} // namespace s11n_example + +#endif // SERIALIZATION_CONNECTION_HPP diff --git a/3rdparty/asio/src/examples/cpp03/serialization/server.cpp b/3rdparty/asio/src/examples/cpp03/serialization/server.cpp new file mode 100644 index 00000000000..b81b1a424da --- /dev/null +++ b/3rdparty/asio/src/examples/cpp03/serialization/server.cpp @@ -0,0 +1,123 @@ +// +// 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 <asio.hpp> +#include <boost/bind.hpp> +#include <boost/lexical_cast.hpp> +#include <iostream> +#include <vector> +#include "connection.hpp" // Must come before boost/serialization headers. +#include <boost/serialization/vector.hpp> +#include "stock.hpp" + +namespace s11n_example { + +/// Serves stock quote information to any client that connects to it. +class server +{ +public: + /// Constructor opens the acceptor and starts waiting for the first incoming + /// connection. + server(asio::io_context& io_context, unsigned short port) + : acceptor_(io_context, + asio::ip::tcp::endpoint(asio::ip::tcp::v4(), port)) + { + // Create the data to be sent to each client. + stock s; + s.code = "ABC"; + s.name = "A Big Company"; + s.open_price = 4.56; + s.high_price = 5.12; + s.low_price = 4.33; + s.last_price = 4.98; + s.buy_price = 4.96; + s.buy_quantity = 1000; + s.sell_price = 4.99; + s.sell_quantity = 2000; + stocks_.push_back(s); + s.code = "DEF"; + s.name = "Developer Entertainment Firm"; + s.open_price = 20.24; + s.high_price = 22.88; + s.low_price = 19.50; + s.last_price = 19.76; + s.buy_price = 19.72; + s.buy_quantity = 34000; + s.sell_price = 19.85; + s.sell_quantity = 45000; + stocks_.push_back(s); + + // Start an accept operation for a new connection. + connection_ptr new_conn(new connection(acceptor_.get_io_context())); + acceptor_.async_accept(new_conn->socket(), + boost::bind(&server::handle_accept, this, + asio::placeholders::error, new_conn)); + } + + /// Handle completion of a accept operation. + void handle_accept(const asio::error_code& e, connection_ptr conn) + { + if (!e) + { + // Successfully accepted a new connection. Send the list of stocks to the + // client. The connection::async_write() function will automatically + // serialize the data structure for us. + conn->async_write(stocks_, + boost::bind(&server::handle_write, this, + asio::placeholders::error, conn)); + } + + // Start an accept operation for a new connection. + connection_ptr new_conn(new connection(acceptor_.get_io_context())); + acceptor_.async_accept(new_conn->socket(), + boost::bind(&server::handle_accept, this, + asio::placeholders::error, new_conn)); + } + + /// Handle completion of a write operation. + void handle_write(const asio::error_code& e, connection_ptr conn) + { + // Nothing to do. The socket will be closed automatically when the last + // reference to the connection object goes away. + } + +private: + /// The acceptor object used to accept incoming socket connections. + asio::ip::tcp::acceptor acceptor_; + + /// The data to be sent to each client. + std::vector<stock> stocks_; +}; + +} // namespace s11n_example + +int main(int argc, char* argv[]) +{ + try + { + // Check command line arguments. + if (argc != 2) + { + std::cerr << "Usage: server <port>" << std::endl; + return 1; + } + unsigned short port = boost::lexical_cast<unsigned short>(argv[1]); + + asio::io_context io_context; + s11n_example::server server(io_context, port); + io_context.run(); + } + catch (std::exception& e) + { + std::cerr << e.what() << std::endl; + } + + return 0; +} diff --git a/3rdparty/asio/src/examples/cpp03/serialization/stock.hpp b/3rdparty/asio/src/examples/cpp03/serialization/stock.hpp new file mode 100644 index 00000000000..1acbca5a7a6 --- /dev/null +++ b/3rdparty/asio/src/examples/cpp03/serialization/stock.hpp @@ -0,0 +1,50 @@ +// +// stock.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 SERIALIZATION_STOCK_HPP +#define SERIALIZATION_STOCK_HPP + +#include <string> + +namespace s11n_example { + +/// Structure to hold information about a single stock. +struct stock +{ + std::string code; + std::string name; + double open_price; + double high_price; + double low_price; + double last_price; + double buy_price; + int buy_quantity; + double sell_price; + int sell_quantity; + + template <typename Archive> + void serialize(Archive& ar, const unsigned int version) + { + ar & code; + ar & name; + ar & open_price; + ar & high_price; + ar & low_price; + ar & last_price; + ar & buy_price; + ar & buy_quantity; + ar & sell_price; + ar & sell_quantity; + } +}; + +} // namespace s11n_example + +#endif // SERIALIZATION_STOCK_HPP |