diff options
Diffstat (limited to 'lib/asio/basic_socket.hpp')
| -rw-r--r-- | lib/asio/basic_socket.hpp | 1757 |
1 files changed, 0 insertions, 1757 deletions
diff --git a/lib/asio/basic_socket.hpp b/lib/asio/basic_socket.hpp deleted file mode 100644 index 3dfacb4..0000000 --- a/lib/asio/basic_socket.hpp +++ /dev/null @@ -1,1757 +0,0 @@ -// -// basic_socket.hpp -// ~~~~~~~~~~~~~~~~ -// -// Copyright (c) 2003-2018 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 ASIO_BASIC_SOCKET_HPP -#define ASIO_BASIC_SOCKET_HPP - -#if defined(_MSC_VER) && (_MSC_VER >= 1200) -# pragma once -#endif // defined(_MSC_VER) && (_MSC_VER >= 1200) - -#include "asio/detail/config.hpp" -#include "asio/async_result.hpp" -#include "asio/basic_io_object.hpp" -#include "asio/detail/handler_type_requirements.hpp" -#include "asio/detail/throw_error.hpp" -#include "asio/detail/type_traits.hpp" -#include "asio/error.hpp" -#include "asio/post.hpp" -#include "asio/socket_base.hpp" - -#if defined(ASIO_HAS_MOVE) -# include <utility> -#endif // defined(ASIO_HAS_MOVE) - -#if !defined(ASIO_ENABLE_OLD_SERVICES) -# if defined(ASIO_WINDOWS_RUNTIME) -# include "asio/detail/winrt_ssocket_service.hpp" -# define ASIO_SVC_T detail::winrt_ssocket_service<Protocol> -# elif defined(ASIO_HAS_IOCP) -# include "asio/detail/win_iocp_socket_service.hpp" -# define ASIO_SVC_T detail::win_iocp_socket_service<Protocol> -# else -# include "asio/detail/reactive_socket_service.hpp" -# define ASIO_SVC_T detail::reactive_socket_service<Protocol> -# endif -#endif // !defined(ASIO_ENABLE_OLD_SERVICES) - -#include "asio/detail/push_options.hpp" - -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 <typename Protocol ASIO_SVC_TPARAM> -class basic_socket - : ASIO_SVC_ACCESS basic_io_object<ASIO_SVC_T>, - public socket_base -{ -public: - /// The type of the executor associated with the object. - typedef io_context::executor_type executor_type; - - /// The native representation of a socket. -#if defined(GENERATING_DOCUMENTATION) - typedef implementation_defined native_handle_type; -#else - typedef typename ASIO_SVC_T::native_handle_type native_handle_type; -#endif - - /// The protocol type. - typedef Protocol protocol_type; - - /// The endpoint type. - typedef typename Protocol::endpoint endpoint_type; - -#if !defined(ASIO_NO_EXTENSIONS) - /// A basic_socket is always the lowest layer. - typedef basic_socket<Protocol ASIO_SVC_TARG> lowest_layer_type; -#endif // !defined(ASIO_NO_EXTENSIONS) - - /// Construct a basic_socket without opening it. - /** - * This constructor creates a socket without opening it. - * - * @param io_context The io_context object that the socket will use to - * dispatch handlers for any asynchronous operations performed on the socket. - */ - explicit basic_socket(asio::io_context& io_context) - : basic_io_object<ASIO_SVC_T>(io_context) - { - } - - /// Construct and open a basic_socket. - /** - * This constructor creates and opens a socket. - * - * @param io_context The io_context 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 asio::system_error Thrown on failure. - */ - basic_socket(asio::io_context& io_context, - const protocol_type& protocol) - : basic_io_object<ASIO_SVC_T>(io_context) - { - asio::error_code ec; - this->get_service().open(this->get_implementation(), protocol, ec); - asio::detail::throw_error(ec, "open"); - } - - /// 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_context The io_context 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 asio::system_error Thrown on failure. - */ - basic_socket(asio::io_context& io_context, - const endpoint_type& endpoint) - : basic_io_object<ASIO_SVC_T>(io_context) - { - asio::error_code ec; - const protocol_type protocol = endpoint.protocol(); - this->get_service().open(this->get_implementation(), protocol, ec); - asio::detail::throw_error(ec, "open"); - this->get_service().bind(this->get_implementation(), endpoint, ec); - asio::detail::throw_error(ec, "bind"); - } - - /// Construct a basic_socket on an existing native socket. - /** - * This constructor creates a socket object to hold an existing native socket. - * - * @param io_context The io_context 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 asio::system_error Thrown on failure. - */ - basic_socket(asio::io_context& io_context, - const protocol_type& protocol, const native_handle_type& native_socket) - : basic_io_object<ASIO_SVC_T>(io_context) - { - asio::error_code ec; - this->get_service().assign(this->get_implementation(), - protocol, native_socket, ec); - asio::detail::throw_error(ec, "assign"); - } - -#if defined(ASIO_HAS_MOVE) || defined(GENERATING_DOCUMENTATION) - /// Move-construct a basic_socket from another. - /** - * This constructor moves a socket from one object to another. - * - * @param other The other basic_socket object from which the move will - * occur. - * - * @note Following the move, the moved-from object is in the same state as if - * constructed using the @c basic_socket(io_context&) constructor. - */ - basic_socket(basic_socket&& other) - : basic_io_object<ASIO_SVC_T>(std::move(other)) - { - } - - /// Move-assign a basic_socket from another. - /** - * This assignment operator moves a socket from one object to another. - * - * @param other The other basic_socket object from which the move will - * occur. - * - * @note Following the move, the moved-from object is in the same state as if - * constructed using the @c basic_socket(io_context&) constructor. - */ - basic_socket& operator=(basic_socket&& other) - { - basic_io_object<ASIO_SVC_T>::operator=(std::move(other)); - return *this; - } - - // All sockets have access to each other's implementations. - template <typename Protocol1 ASIO_SVC_TPARAM1> - friend class basic_socket; - - /// Move-construct a basic_socket from a socket of another protocol type. - /** - * This constructor moves a socket from one object to another. - * - * @param other The other basic_socket object from which the move will - * occur. - * - * @note Following the move, the moved-from object is in the same state as if - * constructed using the @c basic_socket(io_context&) constructor. - */ - template <typename Protocol1 ASIO_SVC_TPARAM1> - basic_socket(basic_socket<Protocol1 ASIO_SVC_TARG1>&& other, - typename enable_if<is_convertible<Protocol1, Protocol>::value>::type* = 0) - : basic_io_object<ASIO_SVC_T>( - other.get_service(), other.get_implementation()) - { - } - - /// Move-assign a basic_socket from a socket of another protocol type. - /** - * This assignment operator moves a socket from one object to another. - * - * @param other The other basic_socket object from which the move will - * occur. - * - * @note Following the move, the moved-from object is in the same state as if - * constructed using the @c basic_socket(io_context&) constructor. - */ - template <typename Protocol1 ASIO_SVC_TPARAM1> - typename enable_if<is_convertible<Protocol1, Protocol>::value, - basic_socket>::type& operator=( - basic_socket<Protocol1 ASIO_SVC_TARG1>&& other) - { - basic_socket tmp(std::move(other)); - basic_io_object<ASIO_SVC_T>::operator=(std::move(tmp)); - return *this; - } -#endif // defined(ASIO_HAS_MOVE) || defined(GENERATING_DOCUMENTATION) - -#if defined(ASIO_ENABLE_OLD_SERVICES) - // These functions are provided by basic_io_object<>. -#else // defined(ASIO_ENABLE_OLD_SERVICES) -#if !defined(ASIO_NO_DEPRECATED) - /// (Deprecated: Use get_executor().) Get the io_context associated with the - /// object. - /** - * This function may be used to obtain the io_context object that the I/O - * object uses to dispatch handlers for asynchronous operations. - * - * @return A reference to the io_context object that the I/O object will use - * to dispatch handlers. Ownership is not transferred to the caller. - */ - asio::io_context& get_io_context() - { - return basic_io_object<ASIO_SVC_T>::get_io_context(); - } - - /// (Deprecated: Use get_executor().) Get the io_context associated with the - /// object. - /** - * This function may be used to obtain the io_context object that the I/O - * object uses to dispatch handlers for asynchronous operations. - * - * @return A reference to the io_context object that the I/O object will use - * to dispatch handlers. Ownership is not transferred to the caller. - */ - asio::io_context& get_io_service() - { - return basic_io_object<ASIO_SVC_T>::get_io_service(); - } -#endif // !defined(ASIO_NO_DEPRECATED) - - /// Get the executor associated with the object. - executor_type get_executor() ASIO_NOEXCEPT - { - return basic_io_object<ASIO_SVC_T>::get_executor(); - } -#endif // defined(ASIO_ENABLE_OLD_SERVICES) - -#if !defined(ASIO_NO_EXTENSIONS) - /// 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; - } -#endif // !defined(ASIO_NO_EXTENSIONS) - - /// 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 asio::system_error Thrown on failure. - * - * @par Example - * @code - * asio::ip::tcp::socket socket(io_context); - * socket.open(asio::ip::tcp::v4()); - * @endcode - */ - void open(const protocol_type& protocol = protocol_type()) - { - asio::error_code ec; - this->get_service().open(this->get_implementation(), protocol, ec); - asio::detail::throw_error(ec, "open"); - } - - /// 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 - * asio::ip::tcp::socket socket(io_context); - * asio::error_code ec; - * socket.open(asio::ip::tcp::v4(), ec); - * if (ec) - * { - * // An error occurred. - * } - * @endcode - */ - ASIO_SYNC_OP_VOID open(const protocol_type& protocol, - asio::error_code& ec) - { - this->get_service().open(this->get_implementation(), protocol, ec); - ASIO_SYNC_OP_VOID_RETURN(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 asio::system_error Thrown on failure. - */ - void assign(const protocol_type& protocol, - const native_handle_type& native_socket) - { - asio::error_code ec; - this->get_service().assign(this->get_implementation(), - protocol, native_socket, ec); - asio::detail::throw_error(ec, "assign"); - } - - /// 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. - */ - ASIO_SYNC_OP_VOID assign(const protocol_type& protocol, - const native_handle_type& native_socket, asio::error_code& ec) - { - this->get_service().assign(this->get_implementation(), - protocol, native_socket, ec); - ASIO_SYNC_OP_VOID_RETURN(ec); - } - - /// Determine whether the socket is open. - bool is_open() const - { - return this->get_service().is_open(this->get_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 asio::error::operation_aborted error. - * - * @throws asio::system_error Thrown on failure. Note that, even if - * the function indicates an error, the underlying descriptor is closed. - * - * @note For portable behaviour with respect to graceful closure of a - * connected socket, call shutdown() before closing the socket. - */ - void close() - { - asio::error_code ec; - this->get_service().close(this->get_implementation(), ec); - asio::detail::throw_error(ec, "close"); - } - - /// 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 asio::error::operation_aborted error. - * - * @param ec Set to indicate what error occurred, if any. Note that, even if - * the function indicates an error, the underlying descriptor is closed. - * - * @par Example - * @code - * asio::ip::tcp::socket socket(io_context); - * ... - * asio::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. - */ - ASIO_SYNC_OP_VOID close(asio::error_code& ec) - { - this->get_service().close(this->get_implementation(), ec); - ASIO_SYNC_OP_VOID_RETURN(ec); - } - - /// Release ownership of the underlying native 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 asio::error::operation_aborted error. Ownership - * of the native socket is then transferred to the caller. - * - * @throws asio::system_error Thrown on failure. - * - * @note This function is unsupported on Windows versions prior to Windows - * 8.1, and will fail with asio::error::operation_not_supported on - * these platforms. - */ -#if defined(ASIO_MSVC) && (ASIO_MSVC >= 1400) \ - && (!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0603) - __declspec(deprecated("This function always fails with " - "operation_not_supported when used on Windows versions " - "prior to Windows 8.1.")) -#endif - native_handle_type release() - { - asio::error_code ec; - native_handle_type s = this->get_service().release( - this->get_implementation(), ec); - asio::detail::throw_error(ec, "release"); - return s; - } - - /// Release ownership of the underlying native 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 asio::error::operation_aborted error. Ownership - * of the native socket is then transferred to the caller. - * - * @param ec Set to indicate what error occurred, if any. - * - * @note This function is unsupported on Windows versions prior to Windows - * 8.1, and will fail with asio::error::operation_not_supported on - * these platforms. - */ -#if defined(ASIO_MSVC) && (ASIO_MSVC >= 1400) \ - && (!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0603) - __declspec(deprecated("This function always fails with " - "operation_not_supported when used on Windows versions " - "prior to Windows 8.1.")) -#endif - native_handle_type release(asio::error_code& ec) - { - return this->get_service().release(this->get_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_handle_type native_handle() - { - return this->get_service().native_handle(this->get_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 asio::error::operation_aborted error. - * - * @throws asio::system_error Thrown on failure. - * - * @note Calls to cancel() will always fail with - * asio::error::operation_not_supported when run on Windows XP, Windows - * Server 2003, and earlier versions of Windows, unless - * 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 - * 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(ASIO_MSVC) && (ASIO_MSVC >= 1400) \ - && (!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600) \ - && !defined(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() - { - asio::error_code ec; - this->get_service().cancel(this->get_implementation(), ec); - asio::detail::throw_error(ec, "cancel"); - } - - /// 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 asio::error::operation_aborted error. - * - * @param ec Set to indicate what error occurred, if any. - * - * @note Calls to cancel() will always fail with - * asio::error::operation_not_supported when run on Windows XP, Windows - * Server 2003, and earlier versions of Windows, unless - * 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 - * 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(ASIO_MSVC) && (ASIO_MSVC >= 1400) \ - && (!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600) \ - && !defined(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 - ASIO_SYNC_OP_VOID cancel(asio::error_code& ec) - { - this->get_service().cancel(this->get_implementation(), ec); - ASIO_SYNC_OP_VOID_RETURN(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 asio::system_error Thrown on failure. - */ - bool at_mark() const - { - asio::error_code ec; - bool b = this->get_service().at_mark(this->get_implementation(), ec); - asio::detail::throw_error(ec, "at_mark"); - 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(asio::error_code& ec) const - { - return this->get_service().at_mark(this->get_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 asio::system_error Thrown on failure. - */ - std::size_t available() const - { - asio::error_code ec; - std::size_t s = this->get_service().available( - this->get_implementation(), ec); - asio::detail::throw_error(ec, "available"); - 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(asio::error_code& ec) const - { - return this->get_service().available(this->get_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 asio::system_error Thrown on failure. - * - * @par Example - * @code - * asio::ip::tcp::socket socket(io_context); - * socket.open(asio::ip::tcp::v4()); - * socket.bind(asio::ip::tcp::endpoint( - * asio::ip::tcp::v4(), 12345)); - * @endcode - */ - void bind(const endpoint_type& endpoint) - { - asio::error_code ec; - this->get_service().bind(this->get_implementation(), endpoint, ec); - asio::detail::throw_error(ec, "bind"); - } - - /// 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 - * asio::ip::tcp::socket socket(io_context); - * socket.open(asio::ip::tcp::v4()); - * asio::error_code ec; - * socket.bind(asio::ip::tcp::endpoint( - * asio::ip::tcp::v4(), 12345), ec); - * if (ec) - * { - * // An error occurred. - * } - * @endcode - */ - ASIO_SYNC_OP_VOID bind(const endpoint_type& endpoint, - asio::error_code& ec) - { - this->get_service().bind(this->get_implementation(), endpoint, ec); - ASIO_SYNC_OP_VOID_RETURN(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 asio::system_error Thrown on failure. - * - * @par Example - * @code - * asio::ip::tcp::socket socket(io_context); - * asio::ip::tcp::endpoint endpoint( - * asio::ip::address::from_string("1.2.3.4"), 12345); - * socket.connect(endpoint); - * @endcode - */ - void connect(const endpoint_type& peer_endpoint) - { - asio::error_code ec; - if (!is_open()) - { - this->get_service().open(this->get_implementation(), - peer_endpoint.protocol(), ec); - asio::detail::throw_error(ec, "connect"); - } - this->get_service().connect(this->get_implementation(), peer_endpoint, ec); - asio::detail::throw_error(ec, "connect"); - } - - /// 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 - * asio::ip::tcp::socket socket(io_context); - * asio::ip::tcp::endpoint endpoint( - * asio::ip::address::from_string("1.2.3.4"), 12345); - * asio::error_code ec; - * socket.connect(endpoint, ec); - * if (ec) - * { - * // An error occurred. - * } - * @endcode - */ - ASIO_SYNC_OP_VOID connect(const endpoint_type& peer_endpoint, - asio::error_code& ec) - { - if (!is_open()) - { - this->get_service().open(this->get_implementation(), - peer_endpoint.protocol(), ec); - if (ec) - { - ASIO_SYNC_OP_VOID_RETURN(ec); - } - } - - this->get_service().connect(this->get_implementation(), peer_endpoint, ec); - ASIO_SYNC_OP_VOID_RETURN(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 asio::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 - * asio::io_context::post(). - * - * @par Example - * @code - * void connect_handler(const asio::error_code& error) - * { - * if (!error) - * { - * // Connect succeeded. - * } - * } - * - * ... - * - * asio::ip::tcp::socket socket(io_context); - * asio::ip::tcp::endpoint endpoint( - * asio::ip::address::from_string("1.2.3.4"), 12345); - * socket.async_connect(endpoint, connect_handler); - * @endcode - */ - template <typename ConnectHandler> - ASIO_INITFN_RESULT_TYPE(ConnectHandler, - void (asio::error_code)) - async_connect(const endpoint_type& peer_endpoint, - ASIO_MOVE_ARG(ConnectHandler) handler) - { - // If you get an error on the following line it means that your handler does - // not meet the documented type requirements for a ConnectHandler. - ASIO_CONNECT_HANDLER_CHECK(ConnectHandler, handler) type_check; - - if (!is_open()) - { - asio::error_code ec; - const protocol_type protocol = peer_endpoint.protocol(); - this->get_service().open(this->get_implementation(), protocol, ec); - if (ec) - { - async_completion<ConnectHandler, - void (asio::error_code)> init(handler); - - asio::post(this->get_executor(), - asio::detail::bind_handler( - ASIO_MOVE_CAST(ASIO_HANDLER_TYPE( - ConnectHandler, void (asio::error_code)))( - init.completion_handler), ec)); - - return init.result.get(); - } - } - -#if defined(ASIO_ENABLE_OLD_SERVICES) - return this->get_service().async_connect(this->get_implementation(), - peer_endpoint, ASIO_MOVE_CAST(ConnectHandler)(handler)); -#else // defined(ASIO_ENABLE_OLD_SERVICES) - async_completion<ConnectHandler, - void (asio::error_code)> init(handler); - - this->get_service().async_connect( - this->get_implementation(), peer_endpoint, init.completion_handler); - - return init.result.get(); -#endif // defined(ASIO_ENABLE_OLD_SERVICES) - } - - /// 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 asio::system_error Thrown on failure. - * - * @sa SettableSocketOption @n - * asio::socket_base::broadcast @n - * asio::socket_base::do_not_route @n - * asio::socket_base::keep_alive @n - * asio::socket_base::linger @n - * asio::socket_base::receive_buffer_size @n - * asio::socket_base::receive_low_watermark @n - * asio::socket_base::reuse_address @n - * asio::socket_base::send_buffer_size @n - * asio::socket_base::send_low_watermark @n - * asio::ip::multicast::join_group @n - * asio::ip::multicast::leave_group @n - * asio::ip::multicast::enable_loopback @n - * asio::ip::multicast::outbound_interface @n - * asio::ip::multicast::hops @n - * asio::ip::tcp::no_delay - * - * @par Example - * Setting the IPPROTO_TCP/TCP_NODELAY option: - * @code - * asio::ip::tcp::socket socket(io_context); - * ... - * asio::ip::tcp::no_delay option(true); - * socket.set_option(option); - * @endcode - */ - template <typename SettableSocketOption> - void set_option(const SettableSocketOption& option) - { - asio::error_code ec; - this->get_service().set_option(this->get_implementation(), option, ec); - asio::detail::throw_error(ec, "set_option"); - } - - /// 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 - * asio::socket_base::broadcast @n - * asio::socket_base::do_not_route @n - * asio::socket_base::keep_alive @n - * asio::socket_base::linger @n - * asio::socket_base::receive_buffer_size @n - * asio::socket_base::receive_low_watermark @n - * asio::socket_base::reuse_address @n - * asio::socket_base::send_buffer_size @n - * asio::socket_base::send_low_watermark @n - * asio::ip::multicast::join_group @n - * asio::ip::multicast::leave_group @n - * asio::ip::multicast::enable_loopback @n - * asio::ip::multicast::outbound_interface @n - * asio::ip::multicast::hops @n - * asio::ip::tcp::no_delay - * - * @par Example - * Setting the IPPROTO_TCP/TCP_NODELAY option: - * @code - * asio::ip::tcp::socket socket(io_context); - * ... - * asio::ip::tcp::no_delay option(true); - * asio::error_code ec; - * socket.set_option(option, ec); - * if (ec) - * { - * // An error occurred. - * } - * @endcode - */ - template <typename SettableSocketOption> - ASIO_SYNC_OP_VOID set_option(const SettableSocketOption& option, - asio::error_code& ec) - { - this->get_service().set_option(this->get_implementation(), option, ec); - ASIO_SYNC_OP_VOID_RETURN(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 asio::system_error Thrown on failure. - * - * @sa GettableSocketOption @n - * asio::socket_base::broadcast @n - * asio::socket_base::do_not_route @n - * asio::socket_base::keep_alive @n - * asio::socket_base::linger @n - * asio::socket_base::receive_buffer_size @n - * asio::socket_base::receive_low_watermark @n - * asio::socket_base::reuse_address @n - * asio::socket_base::send_buffer_size @n - * asio::socket_base::send_low_watermark @n - * asio::ip::multicast::join_group @n - * asio::ip::multicast::leave_group @n - * asio::ip::multicast::enable_loopback @n - * asio::ip::multicast::outbound_interface @n - * asio::ip::multicast::hops @n - * asio::ip::tcp::no_delay - * - * @par Example - * Getting the value of the SOL_SOCKET/SO_KEEPALIVE option: - * @code - * asio::ip::tcp::socket socket(io_context); - * ... - * asio::ip::tcp::socket::keep_alive option; - * socket.get_option(option); - * bool is_set = option.value(); - * @endcode - */ - template <typename GettableSocketOption> - void get_option(GettableSocketOption& option) const - { - asio::error_code ec; - this->get_service().get_option(this->get_implementation(), option, ec); - asio::detail::throw_error(ec, "get_option"); - } - - /// 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 - * asio::socket_base::broadcast @n - * asio::socket_base::do_not_route @n - * asio::socket_base::keep_alive @n - * asio::socket_base::linger @n - * asio::socket_base::receive_buffer_size @n - * asio::socket_base::receive_low_watermark @n - * asio::socket_base::reuse_address @n - * asio::socket_base::send_buffer_size @n - * asio::socket_base::send_low_watermark @n - * asio::ip::multicast::join_group @n - * asio::ip::multicast::leave_group @n - * asio::ip::multicast::enable_loopback @n - * asio::ip::multicast::outbound_interface @n - * asio::ip::multicast::hops @n - * asio::ip::tcp::no_delay - * - * @par Example - * Getting the value of the SOL_SOCKET/SO_KEEPALIVE option: - * @code - * asio::ip::tcp::socket socket(io_context); - * ... - * asio::ip::tcp::socket::keep_alive option; - * asio::error_code ec; - * socket.get_option(option, ec); - * if (ec) - * { - * // An error occurred. - * } - * bool is_set = option.value(); - * @endcode - */ - template <typename GettableSocketOption> - ASIO_SYNC_OP_VOID get_option(GettableSocketOption& option, - asio::error_code& ec) const - { - this->get_service().get_option(this->get_implementation(), option, ec); - ASIO_SYNC_OP_VOID_RETURN(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 asio::system_error Thrown on failure. - * - * @sa IoControlCommand @n - * asio::socket_base::bytes_readable @n - * asio::socket_base::non_blocking_io - * - * @par Example - * Getting the number of bytes ready to read: - * @code - * asio::ip::tcp::socket socket(io_context); - * ... - * asio::ip::tcp::socket::bytes_readable command; - * socket.io_control(command); - * std::size_t bytes_readable = command.get(); - * @endcode - */ - template <typename IoControlCommand> - void io_control(IoControlCommand& command) - { - asio::error_code ec; - this->get_service().io_control(this->get_implementation(), command, ec); - asio::detail::throw_error(ec, "io_control"); - } - - /// 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 - * asio::socket_base::bytes_readable @n - * asio::socket_base::non_blocking_io - * - * @par Example - * Getting the number of bytes ready to read: - * @code - * asio::ip::tcp::socket socket(io_context); - * ... - * asio::ip::tcp::socket::bytes_readable command; - * asio::error_code ec; - * socket.io_control(command, ec); - * if (ec) - * { - * // An error occurred. - * } - * std::size_t bytes_readable = command.get(); - * @endcode - */ - template <typename IoControlCommand> - ASIO_SYNC_OP_VOID io_control(IoControlCommand& command, - asio::error_code& ec) - { - this->get_service().io_control(this->get_implementation(), command, ec); - ASIO_SYNC_OP_VOID_RETURN(ec); - } - - /// Gets the non-blocking mode of the socket. - /** - * @returns @c true if the socket's synchronous operations will fail with - * asio::error::would_block if they are unable to perform the requested - * operation immediately. If @c false, synchronous operations will block - * until complete. - * - * @note The non-blocking mode has no effect on the behaviour of asynchronous - * operations. Asynchronous operations will never fail with the error - * asio::error::would_block. - */ - bool non_blocking() const - { - return this->get_service().non_blocking(this->get_implementation()); - } - - /// Sets the non-blocking mode of the socket. - /** - * @param mode If @c true, the socket's synchronous operations will fail with - * asio::error::would_block if they are unable to perform the requested - * operation immediately. If @c false, synchronous operations will block - * until complete. - * - * @throws asio::system_error Thrown on failure. - * - * @note The non-blocking mode has no effect on the behaviour of asynchronous - * operations. Asynchronous operations will never fail with the error - * asio::error::would_block. - */ - void non_blocking(bool mode) - { - asio::error_code ec; - this->get_service().non_blocking(this->get_implementation(), mode, ec); - asio::detail::throw_error(ec, "non_blocking"); - } - - /// Sets the non-blocking mode of the socket. - /** - * @param mode If @c true, the socket's synchronous operations will fail with - * asio::error::would_block if they are unable to perform the requested - * operation immediately. If @c false, synchronous operations will block - * until complete. - * - * @param ec Set to indicate what error occurred, if any. - * - * @note The non-blocking mode has no effect on the behaviour of asynchronous - * operations. Asynchronous operations will never fail with the error - * asio::error::would_block. - */ - ASIO_SYNC_OP_VOID non_blocking( - bool mode, asio::error_code& ec) - { - this->get_service().non_blocking(this->get_implementation(), mode, ec); - ASIO_SYNC_OP_VOID_RETURN(ec); - } - - /// Gets the non-blocking mode of the native socket implementation. - /** - * This function is used to retrieve the non-blocking mode of the underlying - * native socket. This mode has no effect on the behaviour of the socket - * object's synchronous operations. - * - * @returns @c true if the underlying socket is in non-blocking mode and - * direct system calls may fail with asio::error::would_block (or the - * equivalent system error). - * - * @note The current non-blocking mode is cached by the socket object. - * Consequently, the return value may be incorrect if the non-blocking mode - * was set directly on the native socket. - * - * @par Example - * This function is intended to allow the encapsulation of arbitrary - * non-blocking system calls as asynchronous operations, in a way that is - * transparent to the user of the socket object. The following example - * illustrates how Linux's @c sendfile system call might be encapsulated: - * @code template <typename Handler> - * struct sendfile_op - * { - * tcp::socket& sock_; - * int fd_; - * Handler handler_; - * off_t offset_; - * std::size_t total_bytes_transferred_; - * - * // Function call operator meeting WriteHandler requirements. - * // Used as the handler for the async_write_some operation. - * void operator()(asio::error_code ec, std::size_t) - * { - * // Put the underlying socket into non-blocking mode. - * if (!ec) - * if (!sock_.native_non_blocking()) - * sock_.native_non_blocking(true, ec); - * - * if (!ec) - * { - * for (;;) - * { - * // Try the system call. - * errno = 0; - * int n = ::sendfile(sock_.native_handle(), fd_, &offset_, 65536); - * ec = asio::error_code(n < 0 ? errno : 0, - * asio::error::get_system_category()); - * total_bytes_transferred_ += ec ? 0 : n; - * - * // Retry operation immediately if interrupted by signal. - * if (ec == asio::error::interrupted) - * continue; - * - * // Check if we need to run the operation again. - * if (ec == asio::error::would_block - * || ec == asio::error::try_again) - * { - * // We have to wait for the socket to become ready again. - * sock_.async_wait(tcp::socket::wait_write, *this); - * return; - * } - * - * if (ec || n == 0) - * { - * // An error occurred, or we have reached the end of the file. - * // Either way we must exit the loop so we can call the handler. - * break; - * } - * - * // Loop around to try calling sendfile again. - * } - * } - * - * // Pass result back to user's handler. - * handler_(ec, total_bytes_transferred_); - * } - * }; - * - * template <typename Handler> - * void async_sendfile(tcp::socket& sock, int fd, Handler h) - * { - * sendfile_op<Handler> op = { sock, fd, h, 0, 0 }; - * sock.async_wait(tcp::socket::wait_write, op); - * } @endcode - */ - bool native_non_blocking() const - { - return this->get_service().native_non_blocking(this->get_implementation()); - } - - /// Sets the non-blocking mode of the native socket implementation. - /** - * This function is used to modify the non-blocking mode of the underlying - * native socket. It has no effect on the behaviour of the socket object's - * synchronous operations. - * - * @param mode If @c true, the underlying socket is put into non-blocking - * mode and direct system calls may fail with asio::error::would_block - * (or the equivalent system error). - * - * @throws asio::system_error Thrown on failure. If the @c mode is - * @c false, but the current value of @c non_blocking() is @c true, this - * function fails with asio::error::invalid_argument, as the - * combination does not make sense. - * - * @par Example - * This function is intended to allow the encapsulation of arbitrary - * non-blocking system calls as asynchronous operations, in a way that is - * transparent to the user of the socket object. The following example - * illustrates how Linux's @c sendfile system call might be encapsulated: - * @code template <typename Handler> - * struct sendfile_op - * { - * tcp::socket& sock_; - * int fd_; - * Handler handler_; - * off_t offset_; - * std::size_t total_bytes_transferred_; - * - * // Function call operator meeting WriteHandler requirements. - * // Used as the handler for the async_write_some operation. - * void operator()(asio::error_code ec, std::size_t) - * { - * // Put the underlying socket into non-blocking mode. - * if (!ec) - * if (!sock_.native_non_blocking()) - * sock_.native_non_blocking(true, ec); - * - * if (!ec) - * { - * for (;;) - * { - * // Try the system call. - * errno = 0; - * int n = ::sendfile(sock_.native_handle(), fd_, &offset_, 65536); - * ec = asio::error_code(n < 0 ? errno : 0, - * asio::error::get_system_category()); - * total_bytes_transferred_ += ec ? 0 : n; - * - * // Retry operation immediately if interrupted by signal. - * if (ec == asio::error::interrupted) - * continue; - * - * // Check if we need to run the operation again. - * if (ec == asio::error::would_block - * || ec == asio::error::try_again) - * { - * // We have to wait for the socket to become ready again. - * sock_.async_wait(tcp::socket::wait_write, *this); - * return; - * } - * - * if (ec || n == 0) - * { - * // An error occurred, or we have reached the end of the file. - * // Either way we must exit the loop so we can call the handler. - * break; - * } - * - * // Loop around to try calling sendfile again. - * } - * } - * - * // Pass result back to user's handler. - * handler_(ec, total_bytes_transferred_); - * } - * }; - * - * template <typename Handler> - * void async_sendfile(tcp::socket& sock, int fd, Handler h) - * { - * sendfile_op<Handler> op = { sock, fd, h, 0, 0 }; - * sock.async_wait(tcp::socket::wait_write, op); - * } @endcode - */ - void native_non_blocking(bool mode) - { - asio::error_code ec; - this->get_service().native_non_blocking( - this->get_implementation(), mode, ec); - asio::detail::throw_error(ec, "native_non_blocking"); - } - - /// Sets the non-blocking mode of the native socket implementation. - /** - * This function is used to modify the non-blocking mode of the underlying - * native socket. It has no effect on the behaviour of the socket object's - * synchronous operations. - * - * @param mode If @c true, the underlying socket is put into non-blocking - * mode and direct system calls may fail with asio::error::would_block - * (or the equivalent system error). - * - * @param ec Set to indicate what error occurred, if any. If the @c mode is - * @c false, but the current value of @c non_blocking() is @c true, this - * function fails with asio::error::invalid_argument, as the - * combination does not make sense. - * - * @par Example - * This function is intended to allow the encapsulation of arbitrary - * non-blocking system calls as asynchronous operations, in a way that is - * transparent to the user of the socket object. The following example - * illustrates how Linux's @c sendfile system call might be encapsulated: - * @code template <typename Handler> - * struct sendfile_op - * { - * tcp::socket& sock_; - * int fd_; - * Handler handler_; - * off_t offset_; - * std::size_t total_bytes_transferred_; - * - * // Function call operator meeting WriteHandler requirements. - * // Used as the handler for the async_write_some operation. - * void operator()(asio::error_code ec, std::size_t) - * { - * // Put the underlying socket into non-blocking mode. - * if (!ec) - * if (!sock_.native_non_blocking()) - * sock_.native_non_blocking(true, ec); - * - * if (!ec) - * { - * for (;;) - * { - * // Try the system call. - * errno = 0; - * int n = ::sendfile(sock_.native_handle(), fd_, &offset_, 65536); - * ec = asio::error_code(n < 0 ? errno : 0, - * asio::error::get_system_category()); - * total_bytes_transferred_ += ec ? 0 : n; - * - * // Retry operation immediately if interrupted by signal. - * if (ec == asio::error::interrupted) - * continue; - * - * // Check if we need to run the operation again. - * if (ec == asio::error::would_block - * || ec == asio::error::try_again) - * { - * // We have to wait for the socket to become ready again. - * sock_.async_wait(tcp::socket::wait_write, *this); - * return; - * } - * - * if (ec || n == 0) - * { - * // An error occurred, or we have reached the end of the file. - * // Either way we must exit the loop so we can call the handler. - * break; - * } - * - * // Loop around to try calling sendfile again. - * } - * } - * - * // Pass result back to user's handler. - * handler_(ec, total_bytes_transferred_); - * } - * }; - * - * template <typename Handler> - * void async_sendfile(tcp::socket& sock, int fd, Handler h) - * { - * sendfile_op<Handler> op = { sock, fd, h, 0, 0 }; - * sock.async_wait(tcp::socket::wait_write, op); - * } @endcode - */ - ASIO_SYNC_OP_VOID native_non_blocking( - bool mode, asio::error_code& ec) - { - this->get_service().native_non_blocking( - this->get_implementation(), mode, ec); - ASIO_SYNC_OP_VOID_RETURN(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 asio::system_error Thrown on failure. - * - * @par Example - * @code - * asio::ip::tcp::socket socket(io_context); - * ... - * asio::ip::tcp::endpoint endpoint = socket.local_endpoint(); - * @endcode - */ - endpoint_type local_endpoint() const - { - asio::error_code ec; - endpoint_type ep = this->get_service().local_endpoint( - this->get_implementation(), ec); - asio::detail::throw_error(ec, "local_endpoint"); - 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 - * asio::ip::tcp::socket socket(io_context); - * ... - * asio::error_code ec; - * asio::ip::tcp::endpoint endpoint = socket.local_endpoint(ec); - * if (ec) - * { - * // An error occurred. - * } - * @endcode - */ - endpoint_type local_endpoint(asio::error_code& ec) const - { - return this->get_service().local_endpoint(this->get_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 asio::system_error Thrown on failure. - * - * @par Example - * @code - * asio::ip::tcp::socket socket(io_context); - * ... - * asio::ip::tcp::endpoint endpoint = socket.remote_endpoint(); - * @endcode - */ - endpoint_type remote_endpoint() const - { - asio::error_code ec; - endpoint_type ep = this->get_service().remote_endpoint( - this->get_implementation(), ec); - asio::detail::throw_error(ec, "remote_endpoint"); - 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 - * asio::ip::tcp::socket socket(io_context); - * ... - * asio::error_code ec; - * asio::ip::tcp::endpoint endpoint = socket.remote_endpoint(ec); - * if (ec) - * { - * // An error occurred. - * } - * @endcode - */ - endpoint_type remote_endpoint(asio::error_code& ec) const - { - return this->get_service().remote_endpoint(this->get_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 asio::system_error Thrown on failure. - * - * @par Example - * Shutting down the send side of the socket: - * @code - * asio::ip::tcp::socket socket(io_context); - * ... - * socket.shutdown(asio::ip::tcp::socket::shutdown_send); - * @endcode - */ - void shutdown(shutdown_type what) - { - asio::error_code ec; - this->get_service().shutdown(this->get_implementation(), what, ec); - asio::detail::throw_error(ec, "shutdown"); - } - - /// 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 - * asio::ip::tcp::socket socket(io_context); - * ... - * asio::error_code ec; - * socket.shutdown(asio::ip::tcp::socket::shutdown_send, ec); - * if (ec) - * { - * // An error occurred. - * } - * @endcode - */ - ASIO_SYNC_OP_VOID shutdown(shutdown_type what, - asio::error_code& ec) - { - this->get_service().shutdown(this->get_implementation(), what, ec); - ASIO_SYNC_OP_VOID_RETURN(ec); - } - - /// Wait for the socket to become ready to read, ready to write, or to have - /// pending error conditions. - /** - * This function is used to perform a blocking wait for a socket to enter - * a ready to read, write or error condition state. - * - * @param w Specifies the desired socket state. - * - * @par Example - * Waiting for a socket to become readable. - * @code - * asio::ip::tcp::socket socket(io_context); - * ... - * socket.wait(asio::ip::tcp::socket::wait_read); - * @endcode - */ - void wait(wait_type w) - { - asio::error_code ec; - this->get_service().wait(this->get_implementation(), w, ec); - asio::detail::throw_error(ec, "wait"); - } - - /// Wait for the socket to become ready to read, ready to write, or to have - /// pending error conditions. - /** - * This function is used to perform a blocking wait for a socket to enter - * a ready to read, write or error condition state. - * - * @param w Specifies the desired socket state. - * - * @param ec Set to indicate what error occurred, if any. - * - * @par Example - * Waiting for a socket to become readable. - * @code - * asio::ip::tcp::socket socket(io_context); - * ... - * asio::error_code ec; - * socket.wait(asio::ip::tcp::socket::wait_read, ec); - * @endcode - */ - ASIO_SYNC_OP_VOID wait(wait_type w, asio::error_code& ec) - { - this->get_service().wait(this->get_implementation(), w, ec); - ASIO_SYNC_OP_VOID_RETURN(ec); - } - - /// Asynchronously wait for the socket to become ready to read, ready to - /// write, or to have pending error conditions. - /** - * This function is used to perform an asynchronous wait for a socket to enter - * a ready to read, write or error condition state. - * - * @param w Specifies the desired socket state. - * - * @param handler The handler to be called when the wait operation completes. - * Copies will be made of the handler as required. The function signature of - * the handler must be: - * @code void handler( - * const asio::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 - * asio::io_context::post(). - * - * @par Example - * @code - * void wait_handler(const asio::error_code& error) - * { - * if (!error) - * { - * // Wait succeeded. - * } - * } - * - * ... - * - * asio::ip::tcp::socket socket(io_context); - * ... - * socket.async_wait(asio::ip::tcp::socket::wait_read, wait_handler); - * @endcode - */ - template <typename WaitHandler> - ASIO_INITFN_RESULT_TYPE(WaitHandler, - void (asio::error_code)) - async_wait(wait_type w, ASIO_MOVE_ARG(WaitHandler) handler) - { - // If you get an error on the following line it means that your handler does - // not meet the documented type requirements for a WaitHandler. - ASIO_WAIT_HANDLER_CHECK(WaitHandler, handler) type_check; - -#if defined(ASIO_ENABLE_OLD_SERVICES) - return this->get_service().async_wait(this->get_implementation(), - w, ASIO_MOVE_CAST(WaitHandler)(handler)); -#else // defined(ASIO_ENABLE_OLD_SERVICES) - async_completion<WaitHandler, - void (asio::error_code)> init(handler); - - this->get_service().async_wait(this->get_implementation(), - w, init.completion_handler); - - return init.result.get(); -#endif // defined(ASIO_ENABLE_OLD_SERVICES) - } - -protected: - /// Protected destructor to prevent deletion through this type. - /** - * This function destroys the socket, cancelling any outstanding asynchronous - * operations associated with the socket as if by calling @c cancel. - */ - ~basic_socket() - { - } - -private: - // Disallow copying and assignment. - basic_socket(const basic_socket&) ASIO_DELETED; - basic_socket& operator=(const basic_socket&) ASIO_DELETED; -}; - -} // namespace asio - -#include "asio/detail/pop_options.hpp" - -#if !defined(ASIO_ENABLE_OLD_SERVICES) -# undef ASIO_SVC_T -#endif // !defined(ASIO_ENABLE_OLD_SERVICES) - -#endif // ASIO_BASIC_SOCKET_HPP |