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-//
-// stream_socket_service.hpp
-// ~~~~~~~~~~~~~~~~~~~~~~~~~
-//
-// Copyright (c) 2003-2015 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 SERVICES_STREAM_SOCKET_SERVICE_HPP
-#define SERVICES_STREAM_SOCKET_SERVICE_HPP
-
-#include <boost/asio.hpp>
-#include <boost/noncopyable.hpp>
-#include <boost/lexical_cast.hpp>
-#include "logger.hpp"
-
-namespace services {
-
-/// Debugging stream socket service that wraps the normal stream socket service.
-template <typename Protocol>
-class stream_socket_service
- : public boost::asio::io_service::service
-{
-private:
- /// The type of the wrapped stream socket service.
- typedef boost::asio::stream_socket_service<Protocol> service_impl_type;
-
-public:
- /// The unique service identifier.
- static boost::asio::io_service::id id;
-
- /// The protocol type.
- typedef Protocol protocol_type;
-
- /// The endpoint type.
- typedef typename Protocol::endpoint endpoint_type;
-
- /// The implementation type of a stream socket.
- typedef typename service_impl_type::implementation_type implementation_type;
-
- /// The native type of a stream socket.
- typedef typename service_impl_type::native_handle_type native_handle_type;
-
- /// Construct a new stream socket service for the specified io_service.
- explicit stream_socket_service(boost::asio::io_service& io_service)
- : boost::asio::io_service::service(io_service),
- service_impl_(boost::asio::use_service<service_impl_type>(io_service)),
- logger_(io_service, "stream_socket")
- {
- }
-
- /// Destroy all user-defined handler objects owned by the service.
- void shutdown_service()
- {
- }
-
- /// Construct a new stream socket implementation.
- void construct(implementation_type& impl)
- {
- service_impl_.construct(impl);
- }
-
- /// Destroy a stream socket implementation.
- void destroy(implementation_type& impl)
- {
- service_impl_.destroy(impl);
- }
-
- /// Open a new stream socket implementation.
- boost::system::error_code open(implementation_type& impl,
- const protocol_type& protocol, boost::system::error_code& ec)
- {
- logger_.log("Opening new socket");
- return service_impl_.open(impl, protocol, ec);
- }
-
- /// Open a stream socket from an existing native socket.
- boost::system::error_code assign(implementation_type& impl,
- const protocol_type& protocol, const native_handle_type& native_socket,
- boost::system::error_code& ec)
- {
- logger_.log("Assigning from a native socket");
- return service_impl_.assign(impl, protocol, native_socket, ec);
- }
-
- /// Determine whether the socket is open.
- bool is_open(const implementation_type& impl) const
- {
- logger_.log("Checking if socket is open");
- return service_impl_.is_open(impl);
- }
-
- /// Close a stream socket implementation.
- boost::system::error_code close(implementation_type& impl,
- boost::system::error_code& ec)
- {
- logger_.log("Closing socket");
- return service_impl_.close(impl, ec);
- }
-
- /// Determine whether the socket is at the out-of-band data mark.
- bool at_mark(const implementation_type& impl,
- boost::system::error_code& ec) const
- {
- logger_.log("Checking if socket is at out-of-band data mark");
- return service_impl_.at_mark(impl, ec);
- }
-
- /// Determine the number of bytes available for reading.
- std::size_t available(const implementation_type& impl,
- boost::system::error_code& ec) const
- {
- logger_.log("Determining number of bytes available for reading");
- return service_impl_.available(impl, ec);
- }
-
- /// Bind the stream socket to the specified local endpoint.
- boost::system::error_code bind(implementation_type& impl,
- const endpoint_type& endpoint, boost::system::error_code& ec)
- {
- logger_.log("Binding socket");
- return service_impl_.bind(impl, endpoint, ec);
- }
-
- /// Connect the stream socket to the specified endpoint.
- boost::system::error_code connect(implementation_type& impl,
- const endpoint_type& peer_endpoint, boost::system::error_code& ec)
- {
- logger_.log("Connecting socket to " +
- boost::lexical_cast<std::string>(peer_endpoint));
- return service_impl_.connect(impl, peer_endpoint, ec);
- }
-
- /// Handler to wrap asynchronous connect completion.
- template <typename Handler>
- class connect_handler
- {
- public:
- connect_handler(Handler h, logger& l)
- : handler_(h),
- logger_(l)
- {
- }
-
- void operator()(const boost::system::error_code& e)
- {
- if (e)
- {
- std::string msg = "Asynchronous connect failed: ";
- msg += e.message();
- logger_.log(msg);
- }
- else
- {
- logger_.log("Asynchronous connect succeeded");
- }
-
- handler_(e);
- }
-
- private:
- Handler handler_;
- logger& logger_;
- };
-
- /// Start an asynchronous connect.
- template <typename Handler>
- void async_connect(implementation_type& impl,
- const endpoint_type& peer_endpoint, Handler handler)
- {
- logger_.log("Starting asynchronous connect to " +
- boost::lexical_cast<std::string>(peer_endpoint));
- service_impl_.async_connect(impl, peer_endpoint,
- connect_handler<Handler>(handler, logger_));
- }
-
- /// Set a socket option.
- template <typename Option>
- boost::system::error_code set_option(implementation_type& impl,
- const Option& option, boost::system::error_code& ec)
- {
- logger_.log("Setting socket option");
- return service_impl_.set_option(impl, option, ec);
- }
-
- /// Get a socket option.
- template <typename Option>
- boost::system::error_code get_option(const implementation_type& impl,
- Option& option, boost::system::error_code& ec) const
- {
- logger_.log("Getting socket option");
- return service_impl_.get_option(impl, option, ec);
- }
-
- /// Perform an IO control command on the socket.
- template <typename IO_Control_Command>
- boost::system::error_code io_control(implementation_type& impl,
- IO_Control_Command& command, boost::system::error_code& ec)
- {
- logger_.log("Performing IO control command on socket");
- return service_impl_.io_control(impl, command, ec);
- }
-
- /// Get the local endpoint.
- endpoint_type local_endpoint(const implementation_type& impl,
- boost::system::error_code& ec) const
- {
- logger_.log("Getting socket's local endpoint");
- return service_impl_.local_endpoint(impl, ec);
- }
-
- /// Get the remote endpoint.
- endpoint_type remote_endpoint(const implementation_type& impl,
- boost::system::error_code& ec) const
- {
- logger_.log("Getting socket's remote endpoint");
- return service_impl_.remote_endpoint(impl, ec);
- }
-
- /// Disable sends or receives on the socket.
- boost::system::error_code shutdown(implementation_type& impl,
- boost::asio::socket_base::shutdown_type what,
- boost::system::error_code& ec)
- {
- logger_.log("Shutting down socket");
- return service_impl_.shutdown(impl, what, ec);
- }
-
- /// Send the given data to the peer.
- template <typename Const_Buffers>
- std::size_t send(implementation_type& impl, const Const_Buffers& buffers,
- boost::asio::socket_base::message_flags flags,
- boost::system::error_code& ec)
- {
- logger_.log("Sending data on socket");
- return service_impl_.send(impl, buffers, flags, ec);
- }
-
- /// Handler to wrap asynchronous send completion.
- template <typename Handler>
- class send_handler
- {
- public:
- send_handler(Handler h, logger& l)
- : handler_(h),
- logger_(l)
- {
- }
-
- void operator()(const boost::system::error_code& e,
- std::size_t bytes_transferred)
- {
- if (e)
- {
- std::string msg = "Asynchronous send failed: ";
- msg += e.message();
- logger_.log(msg);
- }
- else
- {
- logger_.log("Asynchronous send succeeded");
- }
-
- handler_(e, bytes_transferred);
- }
-
- private:
- Handler handler_;
- logger& logger_;
- };
-
- /// Start an asynchronous send.
- template <typename Const_Buffers, typename Handler>
- void async_send(implementation_type& impl, const Const_Buffers& buffers,
- boost::asio::socket_base::message_flags flags, Handler handler)
- {
- logger_.log("Starting asynchronous send");
- service_impl_.async_send(impl, buffers, flags,
- send_handler<Handler>(handler, logger_));
- }
-
- /// Receive some data from the peer.
- template <typename Mutable_Buffers>
- std::size_t receive(implementation_type& impl,
- const Mutable_Buffers& buffers,
- boost::asio::socket_base::message_flags flags,
- boost::system::error_code& ec)
- {
- logger_.log("Receiving data on socket");
- return service_impl_.receive(impl, buffers, flags, ec);
- }
-
- /// Handler to wrap asynchronous receive completion.
- template <typename Handler>
- class receive_handler
- {
- public:
- receive_handler(Handler h, logger& l)
- : handler_(h),
- logger_(l)
- {
- }
-
- void operator()(const boost::system::error_code& e,
- std::size_t bytes_transferred)
- {
- if (e)
- {
- std::string msg = "Asynchronous receive failed: ";
- msg += e.message();
- logger_.log(msg);
- }
- else
- {
- logger_.log("Asynchronous receive succeeded");
- }
-
- handler_(e, bytes_transferred);
- }
-
- private:
- Handler handler_;
- logger& logger_;
- };
-
- /// Start an asynchronous receive.
- template <typename Mutable_Buffers, typename Handler>
- void async_receive(implementation_type& impl, const Mutable_Buffers& buffers,
- boost::asio::socket_base::message_flags flags, Handler handler)
- {
- logger_.log("Starting asynchronous receive");
- service_impl_.async_receive(impl, buffers, flags,
- receive_handler<Handler>(handler, logger_));
- }
-
-private:
- /// The wrapped stream socket service.
- service_impl_type& service_impl_;
-
- /// The logger used for writing debug messages.
- mutable logger logger_;
-};
-
-template <typename Protocol>
-boost::asio::io_service::id stream_socket_service<Protocol>::id;
-
-} // namespace services
-
-#endif // SERVICES_STREAM_SOCKET_SERVICE_HPP