// // basic_socket.hpp // ~~~~~~~~~~~~~~~~ // // Copyright (c) 2003-2010 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 BOOST_ASIO_BASIC_SOCKET_HPP #define BOOST_ASIO_BASIC_SOCKET_HPP #if defined(_MSC_VER) && (_MSC_VER >= 1200) # pragma once #endif // defined(_MSC_VER) && (_MSC_VER >= 1200) #include #include #include #include #include #include namespace boost { namespace asio { /// Provides socket functionality. /** * The basic_socket class template provides functionality that is common to both * stream-oriented and datagram-oriented sockets. * * @par Thread Safety * @e Distinct @e objects: Safe.@n * @e Shared @e objects: Unsafe. */ template class basic_socket : public basic_io_object, public socket_base { public: /// The native representation of a socket. typedef typename SocketService::native_type native_type; /// The protocol type. typedef Protocol protocol_type; /// The endpoint type. typedef typename Protocol::endpoint endpoint_type; /// A basic_socket is always the lowest layer. typedef basic_socket lowest_layer_type; /// Construct a basic_socket without opening it. /** * This constructor creates a socket without opening it. * * @param io_service The io_service object that the socket will use to * dispatch handlers for any asynchronous operations performed on the socket. */ explicit basic_socket(boost::asio::io_service& io_service) : basic_io_object(io_service) { } /// Construct and open a basic_socket. /** * This constructor creates and opens a socket. * * @param io_service The io_service object that the socket will use to * dispatch handlers for any asynchronous operations performed on the socket. * * @param protocol An object specifying protocol parameters to be used. * * @throws boost::system::system_error Thrown on failure. */ basic_socket(boost::asio::io_service& io_service, const protocol_type& protocol) : basic_io_object(io_service) { boost::system::error_code ec; this->service.open(this->implementation, protocol, ec); boost::asio::detail::throw_error(ec); } /// Construct a basic_socket, opening it and binding it to the given local /// endpoint. /** * This constructor creates a socket and automatically opens it bound to the * specified endpoint on the local machine. The protocol used is the protocol * associated with the given endpoint. * * @param io_service The io_service object that the socket will use to * dispatch handlers for any asynchronous operations performed on the socket. * * @param endpoint An endpoint on the local machine to which the socket will * be bound. * * @throws boost::system::system_error Thrown on failure. */ basic_socket(boost::asio::io_service& io_service, const endpoint_type& endpoint) : basic_io_object(io_service) { boost::system::error_code ec; this->service.open(this->implementation, endpoint.protocol(), ec); boost::asio::detail::throw_error(ec); this->service.bind(this->implementation, endpoint, ec); boost::asio::detail::throw_error(ec); } /// Construct a basic_socket on an existing native socket. /** * This constructor creates a socket object to hold an existing native socket. * * @param io_service The io_service object that the socket will use to * dispatch handlers for any asynchronous operations performed on the socket. * * @param protocol An object specifying protocol parameters to be used. * * @param native_socket A native socket. * * @throws boost::system::system_error Thrown on failure. */ basic_socket(boost::asio::io_service& io_service, const protocol_type& protocol, const native_type& native_socket) : basic_io_object(io_service) { boost::system::error_code ec; this->service.assign(this->implementation, protocol, native_socket, ec); boost::asio::detail::throw_error(ec); } /// Get a reference to the lowest layer. /** * This function returns a reference to the lowest layer in a stack of * layers. Since a basic_socket cannot contain any further layers, it simply * returns a reference to itself. * * @return A reference to the lowest layer in the stack of layers. Ownership * is not transferred to the caller. */ lowest_layer_type& lowest_layer() { return *this; } /// Get a const reference to the lowest layer. /** * This function returns a const reference to the lowest layer in a stack of * layers. Since a basic_socket cannot contain any further layers, it simply * returns a reference to itself. * * @return A const reference to the lowest layer in the stack of layers. * Ownership is not transferred to the caller. */ const lowest_layer_type& lowest_layer() const { return *this; } /// Open the socket using the specified protocol. /** * This function opens the socket so that it will use the specified protocol. * * @param protocol An object specifying protocol parameters to be used. * * @throws boost::system::system_error Thrown on failure. * * @par Example * @code * boost::asio::ip::tcp::socket socket(io_service); * socket.open(boost::asio::ip::tcp::v4()); * @endcode */ void open(const protocol_type& protocol = protocol_type()) { boost::system::error_code ec; this->service.open(this->implementation, protocol, ec); boost::asio::detail::throw_error(ec); } /// Open the socket using the specified protocol. /** * This function opens the socket so that it will use the specified protocol. * * @param protocol An object specifying which protocol is to be used. * * @param ec Set to indicate what error occurred, if any. * * @par Example * @code * boost::asio::ip::tcp::socket socket(io_service); * boost::system::error_code ec; * socket.open(boost::asio::ip::tcp::v4(), ec); * if (ec) * { * // An error occurred. * } * @endcode */ boost::system::error_code open(const protocol_type& protocol, boost::system::error_code& ec) { return this->service.open(this->implementation, protocol, ec); } /// Assign an existing native socket to the socket. /* * This function opens the socket to hold an existing native socket. * * @param protocol An object specifying which protocol is to be used. * * @param native_socket A native socket. * * @throws boost::system::system_error Thrown on failure. */ void assign(const protocol_type& protocol, const native_type& native_socket) { boost::system::error_code ec; this->service.assign(this->implementation, protocol, native_socket, ec); boost::asio::detail::throw_error(ec); } /// Assign an existing native socket to the socket. /* * This function opens the socket to hold an existing native socket. * * @param protocol An object specifying which protocol is to be used. * * @param native_socket A native socket. * * @param ec Set to indicate what error occurred, if any. */ boost::system::error_code assign(const protocol_type& protocol, const native_type& native_socket, boost::system::error_code& ec) { return this->service.assign(this->implementation, protocol, native_socket, ec); } /// Determine whether the socket is open. bool is_open() const { return this->service.is_open(this->implementation); } /// Close the socket. /** * This function is used to close the socket. Any asynchronous send, receive * or connect operations will be cancelled immediately, and will complete * with the boost::asio::error::operation_aborted error. * * @throws boost::system::system_error Thrown on failure. * * @note For portable behaviour with respect to graceful closure of a * connected socket, call shutdown() before closing the socket. */ void close() { boost::system::error_code ec; this->service.close(this->implementation, ec); boost::asio::detail::throw_error(ec); } /// Close the socket. /** * This function is used to close the socket. Any asynchronous send, receive * or connect operations will be cancelled immediately, and will complete * with the boost::asio::error::operation_aborted error. * * @param ec Set to indicate what error occurred, if any. * * @par Example * @code * boost::asio::ip::tcp::socket socket(io_service); * ... * boost::system::error_code ec; * socket.close(ec); * if (ec) * { * // An error occurred. * } * @endcode * * @note For portable behaviour with respect to graceful closure of a * connected socket, call shutdown() before closing the socket. */ boost::system::error_code close(boost::system::error_code& ec) { return this->service.close(this->implementation, ec); } /// Get the native socket representation. /** * This function may be used to obtain the underlying representation of the * socket. This is intended to allow access to native socket functionality * that is not otherwise provided. */ native_type native() { return this->service.native(this->implementation); } /// Cancel all asynchronous operations associated with the socket. /** * This function causes all outstanding asynchronous connect, send and receive * operations to finish immediately, and the handlers for cancelled operations * will be passed the boost::asio::error::operation_aborted error. * * @throws boost::system::system_error Thrown on failure. * * @note Calls to cancel() will always fail with * boost::asio::error::operation_not_supported when run on Windows XP, Windows * Server 2003, and earlier versions of Windows, unless * BOOST_ASIO_ENABLE_CANCELIO is defined. However, the CancelIo function has * two issues that should be considered before enabling its use: * * @li It will only cancel asynchronous operations that were initiated in the * current thread. * * @li It can appear to complete without error, but the request to cancel the * unfinished operations may be silently ignored by the operating system. * Whether it works or not seems to depend on the drivers that are installed. * * For portable cancellation, consider using one of the following * alternatives: * * @li Disable asio's I/O completion port backend by defining * BOOST_ASIO_DISABLE_IOCP. * * @li Use the close() function to simultaneously cancel the outstanding * operations and close the socket. * * When running on Windows Vista, Windows Server 2008, and later, the * CancelIoEx function is always used. This function does not have the * problems described above. */ #if defined(BOOST_MSVC) && (BOOST_MSVC >= 1400) \ && (!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600) \ && !defined(BOOST_ASIO_ENABLE_CANCELIO) __declspec(deprecated("By default, this function always fails with " "operation_not_supported when used on Windows XP, Windows Server 2003, " "or earlier. Consult documentation for details.")) #endif void cancel() { boost::system::error_code ec; this->service.cancel(this->implementation, ec); boost::asio::detail::throw_error(ec); } /// Cancel all asynchronous operations associated with the socket. /** * This function causes all outstanding asynchronous connect, send and receive * operations to finish immediately, and the handlers for cancelled operations * will be passed the boost::asio::error::operation_aborted error. * * @param ec Set to indicate what error occurred, if any. * * @note Calls to cancel() will always fail with * boost::asio::error::operation_not_supported when run on Windows XP, Windows * Server 2003, and earlier versions of Windows, unless * BOOST_ASIO_ENABLE_CANCELIO is defined. However, the CancelIo function has * two issues that should be considered before enabling its use: * * @li It will only cancel asynchronous operations that were initiated in the * current thread. * * @li It can appear to complete without error, but the request to cancel the * unfinished operations may be silently ignored by the operating system. * Whether it works or not seems to depend on the drivers that are installed. * * For portable cancellation, consider using one of the following * alternatives: * * @li Disable asio's I/O completion port backend by defining * BOOST_ASIO_DISABLE_IOCP. * * @li Use the close() function to simultaneously cancel the outstanding * operations and close the socket. * * When running on Windows Vista, Windows Server 2008, and later, the * CancelIoEx function is always used. This function does not have the * problems described above. */ #if defined(BOOST_MSVC) && (BOOST_MSVC >= 1400) \ && (!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600) \ && !defined(BOOST_ASIO_ENABLE_CANCELIO) __declspec(deprecated("By default, this function always fails with " "operation_not_supported when used on Windows XP, Windows Server 2003, " "or earlier. Consult documentation for details.")) #endif boost::system::error_code cancel(boost::system::error_code& ec) { return this->service.cancel(this->implementation, ec); } /// Determine whether the socket is at the out-of-band data mark. /** * This function is used to check whether the socket input is currently * positioned at the out-of-band data mark. * * @return A bool indicating whether the socket is at the out-of-band data * mark. * * @throws boost::system::system_error Thrown on failure. */ bool at_mark() const { boost::system::error_code ec; bool b = this->service.at_mark(this->implementation, ec); boost::asio::detail::throw_error(ec); return b; } /// Determine whether the socket is at the out-of-band data mark. /** * This function is used to check whether the socket input is currently * positioned at the out-of-band data mark. * * @param ec Set to indicate what error occurred, if any. * * @return A bool indicating whether the socket is at the out-of-band data * mark. */ bool at_mark(boost::system::error_code& ec) const { return this->service.at_mark(this->implementation, ec); } /// Determine the number of bytes available for reading. /** * This function is used to determine the number of bytes that may be read * without blocking. * * @return The number of bytes that may be read without blocking, or 0 if an * error occurs. * * @throws boost::system::system_error Thrown on failure. */ std::size_t available() const { boost::system::error_code ec; std::size_t s = this->service.available(this->implementation, ec); boost::asio::detail::throw_error(ec); return s; } /// Determine the number of bytes available for reading. /** * This function is used to determine the number of bytes that may be read * without blocking. * * @param ec Set to indicate what error occurred, if any. * * @return The number of bytes that may be read without blocking, or 0 if an * error occurs. */ std::size_t available(boost::system::error_code& ec) const { return this->service.available(this->implementation, ec); } /// Bind the socket to the given local endpoint. /** * This function binds the socket to the specified endpoint on the local * machine. * * @param endpoint An endpoint on the local machine to which the socket will * be bound. * * @throws boost::system::system_error Thrown on failure. * * @par Example * @code * boost::asio::ip::tcp::socket socket(io_service); * socket.open(boost::asio::ip::tcp::v4()); * socket.bind(boost::asio::ip::tcp::endpoint( * boost::asio::ip::tcp::v4(), 12345)); * @endcode */ void bind(const endpoint_type& endpoint) { boost::system::error_code ec; this->service.bind(this->implementation, endpoint, ec); boost::asio::detail::throw_error(ec); } /// Bind the socket to the given local endpoint. /** * This function binds the socket to the specified endpoint on the local * machine. * * @param endpoint An endpoint on the local machine to which the socket will * be bound. * * @param ec Set to indicate what error occurred, if any. * * @par Example * @code * boost::asio::ip::tcp::socket socket(io_service); * socket.open(boost::asio::ip::tcp::v4()); * boost::system::error_code ec; * socket.bind(boost::asio::ip::tcp::endpoint( * boost::asio::ip::tcp::v4(), 12345), ec); * if (ec) * { * // An error occurred. * } * @endcode */ boost::system::error_code bind(const endpoint_type& endpoint, boost::system::error_code& ec) { return this->service.bind(this->implementation, endpoint, ec); } /// Connect the socket to the specified endpoint. /** * This function is used to connect a socket to the specified remote endpoint. * The function call will block until the connection is successfully made or * an error occurs. * * The socket is automatically opened if it is not already open. If the * connect fails, and the socket was automatically opened, the socket is * not returned to the closed state. * * @param peer_endpoint The remote endpoint to which the socket will be * connected. * * @throws boost::system::system_error Thrown on failure. * * @par Example * @code * boost::asio::ip::tcp::socket socket(io_service); * boost::asio::ip::tcp::endpoint endpoint( * boost::asio::ip::address::from_string("1.2.3.4"), 12345); * socket.connect(endpoint); * @endcode */ void connect(const endpoint_type& peer_endpoint) { boost::system::error_code ec; if (!is_open()) { this->service.open(this->implementation, peer_endpoint.protocol(), ec); boost::asio::detail::throw_error(ec); } this->service.connect(this->implementation, peer_endpoint, ec); boost::asio::detail::throw_error(ec); } /// Connect the socket to the specified endpoint. /** * This function is used to connect a socket to the specified remote endpoint. * The function call will block until the connection is successfully made or * an error occurs. * * The socket is automatically opened if it is not already open. If the * connect fails, and the socket was automatically opened, the socket is * not returned to the closed state. * * @param peer_endpoint The remote endpoint to which the socket will be * connected. * * @param ec Set to indicate what error occurred, if any. * * @par Example * @code * boost::asio::ip::tcp::socket socket(io_service); * boost::asio::ip::tcp::endpoint endpoint( * boost::asio::ip::address::from_string("1.2.3.4"), 12345); * boost::system::error_code ec; * socket.connect(endpoint, ec); * if (ec) * { * // An error occurred. * } * @endcode */ boost::system::error_code connect(const endpoint_type& peer_endpoint, boost::system::error_code& ec) { if (!is_open()) { if (this->service.open(this->implementation, peer_endpoint.protocol(), ec)) { return ec; } } return this->service.connect(this->implementation, peer_endpoint, ec); } /// Start an asynchronous connect. /** * This function is used to asynchronously connect a socket to the specified * remote endpoint. The function call always returns immediately. * * The socket is automatically opened if it is not already open. If the * connect fails, and the socket was automatically opened, the socket is * not returned to the closed state. * * @param peer_endpoint The remote endpoint to which the socket will be * connected. Copies will be made of the endpoint object as required. * * @param handler The handler to be called when the connection operation * completes. Copies will be made of the handler as required. The function * signature of the handler must be: * @code void handler( * const boost::system::error_code& error // Result of operation * ); @endcode * Regardless of whether the asynchronous operation completes immediately or * not, the handler will not be invoked from within this function. Invocation * of the handler will be performed in a manner equivalent to using * boost::asio::io_service::post(). * * @par Example * @code * void connect_handler(const boost::system::error_code& error) * { * if (!error) * { * // Connect succeeded. * } * } * * ... * * boost::asio::ip::tcp::socket socket(io_service); * boost::asio::ip::tcp::endpoint endpoint( * boost::asio::ip::address::from_string("1.2.3.4"), 12345); * socket.async_connect(endpoint, connect_handler); * @endcode */ template void async_connect(const endpoint_type& peer_endpoint, ConnectHandler handler) { if (!is_open()) { boost::system::error_code ec; if (this->service.open(this->implementation, peer_endpoint.protocol(), ec)) { this->get_io_service().post( boost::asio::detail::bind_handler(handler, ec)); return; } } this->service.async_connect(this->implementation, peer_endpoint, handler); } /// Set an option on the socket. /** * This function is used to set an option on the socket. * * @param option The new option value to be set on the socket. * * @throws boost::system::system_error Thrown on failure. * * @sa SettableSocketOption @n * boost::asio::socket_base::broadcast @n * boost::asio::socket_base::do_not_route @n * boost::asio::socket_base::keep_alive @n * boost::asio::socket_base::linger @n * boost::asio::socket_base::receive_buffer_size @n * boost::asio::socket_base::receive_low_watermark @n * boost::asio::socket_base::reuse_address @n * boost::asio::socket_base::send_buffer_size @n * boost::asio::socket_base::send_low_watermark @n * boost::asio::ip::multicast::join_group @n * boost::asio::ip::multicast::leave_group @n * boost::asio::ip::multicast::enable_loopback @n * boost::asio::ip::multicast::outbound_interface @n * boost::asio::ip::multicast::hops @n * boost::asio::ip::tcp::no_delay * * @par Example * Setting the IPPROTO_TCP/TCP_NODELAY option: * @code * boost::asio::ip::tcp::socket socket(io_service); * ... * boost::asio::ip::tcp::no_delay option(true); * socket.set_option(option); * @endcode */ template void set_option(const SettableSocketOption& option) { boost::system::error_code ec; this->service.set_option(this->implementation, option, ec); boost::asio::detail::throw_error(ec); } /// Set an option on the socket. /** * This function is used to set an option on the socket. * * @param option The new option value to be set on the socket. * * @param ec Set to indicate what error occurred, if any. * * @sa SettableSocketOption @n * boost::asio::socket_base::broadcast @n * boost::asio::socket_base::do_not_route @n * boost::asio::socket_base::keep_alive @n * boost::asio::socket_base::linger @n * boost::asio::socket_base::receive_buffer_size @n * boost::asio::socket_base::receive_low_watermark @n * boost::asio::socket_base::reuse_address @n * boost::asio::socket_base::send_buffer_size @n * boost::asio::socket_base::send_low_watermark @n * boost::asio::ip::multicast::join_group @n * boost::asio::ip::multicast::leave_group @n * boost::asio::ip::multicast::enable_loopback @n * boost::asio::ip::multicast::outbound_interface @n * boost::asio::ip::multicast::hops @n * boost::asio::ip::tcp::no_delay * * @par Example * Setting the IPPROTO_TCP/TCP_NODELAY option: * @code * boost::asio::ip::tcp::socket socket(io_service); * ... * boost::asio::ip::tcp::no_delay option(true); * boost::system::error_code ec; * socket.set_option(option, ec); * if (ec) * { * // An error occurred. * } * @endcode */ template boost::system::error_code set_option(const SettableSocketOption& option, boost::system::error_code& ec) { return this->service.set_option(this->implementation, option, ec); } /// Get an option from the socket. /** * This function is used to get the current value of an option on the socket. * * @param option The option value to be obtained from the socket. * * @throws boost::system::system_error Thrown on failure. * * @sa GettableSocketOption @n * boost::asio::socket_base::broadcast @n * boost::asio::socket_base::do_not_route @n * boost::asio::socket_base::keep_alive @n * boost::asio::socket_base::linger @n * boost::asio::socket_base::receive_buffer_size @n * boost::asio::socket_base::receive_low_watermark @n * boost::asio::socket_base::reuse_address @n * boost::asio::socket_base::send_buffer_size @n * boost::asio::socket_base::send_low_watermark @n * boost::asio::ip::multicast::join_group @n * boost::asio::ip::multicast::leave_group @n * boost::asio::ip::multicast::enable_loopback @n * boost::asio::ip::multicast::outbound_interface @n * boost::asio::ip::multicast::hops @n * boost::asio::ip::tcp::no_delay * * @par Example * Getting the value of the SOL_SOCKET/SO_KEEPALIVE option: * @code * boost::asio::ip::tcp::socket socket(io_service); * ... * boost::asio::ip::tcp::socket::keep_alive option; * socket.get_option(option); * bool is_set = option.get(); * @endcode */ template void get_option(GettableSocketOption& option) const { boost::system::error_code ec; this->service.get_option(this->implementation, option, ec); boost::asio::detail::throw_error(ec); } /// Get an option from the socket. /** * This function is used to get the current value of an option on the socket. * * @param option The option value to be obtained from the socket. * * @param ec Set to indicate what error occurred, if any. * * @sa GettableSocketOption @n * boost::asio::socket_base::broadcast @n * boost::asio::socket_base::do_not_route @n * boost::asio::socket_base::keep_alive @n * boost::asio::socket_base::linger @n * boost::asio::socket_base::receive_buffer_size @n * boost::asio::socket_base::receive_low_watermark @n * boost::asio::socket_base::reuse_address @n * boost::asio::socket_base::send_buffer_size @n * boost::asio::socket_base::send_low_watermark @n * boost::asio::ip::multicast::join_group @n * boost::asio::ip::multicast::leave_group @n * boost::asio::ip::multicast::enable_loopback @n * boost::asio::ip::multicast::outbound_interface @n * boost::asio::ip::multicast::hops @n * boost::asio::ip::tcp::no_delay * * @par Example * Getting the value of the SOL_SOCKET/SO_KEEPALIVE option: * @code * boost::asio::ip::tcp::socket socket(io_service); * ... * boost::asio::ip::tcp::socket::keep_alive option; * boost::system::error_code ec; * socket.get_option(option, ec); * if (ec) * { * // An error occurred. * } * bool is_set = option.get(); * @endcode */ template boost::system::error_code get_option(GettableSocketOption& option, boost::system::error_code& ec) const { return this->service.get_option(this->implementation, option, ec); } /// Perform an IO control command on the socket. /** * This function is used to execute an IO control command on the socket. * * @param command The IO control command to be performed on the socket. * * @throws boost::system::system_error Thrown on failure. * * @sa IoControlCommand @n * boost::asio::socket_base::bytes_readable @n * boost::asio::socket_base::non_blocking_io * * @par Example * Getting the number of bytes ready to read: * @code * boost::asio::ip::tcp::socket socket(io_service); * ... * boost::asio::ip::tcp::socket::bytes_readable command; * socket.io_control(command); * std::size_t bytes_readable = command.get(); * @endcode */ template void io_control(IoControlCommand& command) { boost::system::error_code ec; this->service.io_control(this->implementation, command, ec); boost::asio::detail::throw_error(ec); } /// Perform an IO control command on the socket. /** * This function is used to execute an IO control command on the socket. * * @param command The IO control command to be performed on the socket. * * @param ec Set to indicate what error occurred, if any. * * @sa IoControlCommand @n * boost::asio::socket_base::bytes_readable @n * boost::asio::socket_base::non_blocking_io * * @par Example * Getting the number of bytes ready to read: * @code * boost::asio::ip::tcp::socket socket(io_service); * ... * boost::asio::ip::tcp::socket::bytes_readable command; * boost::system::error_code ec; * socket.io_control(command, ec); * if (ec) * { * // An error occurred. * } * std::size_t bytes_readable = command.get(); * @endcode */ template boost::system::error_code io_control(IoControlCommand& command, boost::system::error_code& ec) { return this->service.io_control(this->implementation, command, ec); } /// Get the local endpoint of the socket. /** * This function is used to obtain the locally bound endpoint of the socket. * * @returns An object that represents the local endpoint of the socket. * * @throws boost::system::system_error Thrown on failure. * * @par Example * @code * boost::asio::ip::tcp::socket socket(io_service); * ... * boost::asio::ip::tcp::endpoint endpoint = socket.local_endpoint(); * @endcode */ endpoint_type local_endpoint() const { boost::system::error_code ec; endpoint_type ep = this->service.local_endpoint(this->implementation, ec); boost::asio::detail::throw_error(ec); return ep; } /// Get the local endpoint of the socket. /** * This function is used to obtain the locally bound endpoint of the socket. * * @param ec Set to indicate what error occurred, if any. * * @returns An object that represents the local endpoint of the socket. * Returns a default-constructed endpoint object if an error occurred. * * @par Example * @code * boost::asio::ip::tcp::socket socket(io_service); * ... * boost::system::error_code ec; * boost::asio::ip::tcp::endpoint endpoint = socket.local_endpoint(ec); * if (ec) * { * // An error occurred. * } * @endcode */ endpoint_type local_endpoint(boost::system::error_code& ec) const { return this->service.local_endpoint(this->implementation, ec); } /// Get the remote endpoint of the socket. /** * This function is used to obtain the remote endpoint of the socket. * * @returns An object that represents the remote endpoint of the socket. * * @throws boost::system::system_error Thrown on failure. * * @par Example * @code * boost::asio::ip::tcp::socket socket(io_service); * ... * boost::asio::ip::tcp::endpoint endpoint = socket.remote_endpoint(); * @endcode */ endpoint_type remote_endpoint() const { boost::system::error_code ec; endpoint_type ep = this->service.remote_endpoint(this->implementation, ec); boost::asio::detail::throw_error(ec); return ep; } /// Get the remote endpoint of the socket. /** * This function is used to obtain the remote endpoint of the socket. * * @param ec Set to indicate what error occurred, if any. * * @returns An object that represents the remote endpoint of the socket. * Returns a default-constructed endpoint object if an error occurred. * * @par Example * @code * boost::asio::ip::tcp::socket socket(io_service); * ... * boost::system::error_code ec; * boost::asio::ip::tcp::endpoint endpoint = socket.remote_endpoint(ec); * if (ec) * { * // An error occurred. * } * @endcode */ endpoint_type remote_endpoint(boost::system::error_code& ec) const { return this->service.remote_endpoint(this->implementation, ec); } /// Disable sends or receives on the socket. /** * This function is used to disable send operations, receive operations, or * both. * * @param what Determines what types of operation will no longer be allowed. * * @throws boost::system::system_error Thrown on failure. * * @par Example * Shutting down the send side of the socket: * @code * boost::asio::ip::tcp::socket socket(io_service); * ... * socket.shutdown(boost::asio::ip::tcp::socket::shutdown_send); * @endcode */ void shutdown(shutdown_type what) { boost::system::error_code ec; this->service.shutdown(this->implementation, what, ec); boost::asio::detail::throw_error(ec); } /// Disable sends or receives on the socket. /** * This function is used to disable send operations, receive operations, or * both. * * @param what Determines what types of operation will no longer be allowed. * * @param ec Set to indicate what error occurred, if any. * * @par Example * Shutting down the send side of the socket: * @code * boost::asio::ip::tcp::socket socket(io_service); * ... * boost::system::error_code ec; * socket.shutdown(boost::asio::ip::tcp::socket::shutdown_send, ec); * if (ec) * { * // An error occurred. * } * @endcode */ boost::system::error_code shutdown(shutdown_type what, boost::system::error_code& ec) { return this->service.shutdown(this->implementation, what, ec); } protected: /// Protected destructor to prevent deletion through this type. ~basic_socket() { } }; } // namespace asio } // namespace boost #include #endif // BOOST_ASIO_BASIC_SOCKET_HPP