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+//
+// basic_socket_acceptor.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_ACCEPTOR_HPP
+#define ASIO_BASIC_SOCKET_ACCEPTOR_HPP
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1200)
+# pragma once
+#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
+
+#include "asio/detail/config.hpp"
+#include "asio/basic_io_object.hpp"
+#include "asio/basic_socket.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/socket_base.hpp"
+
+#if defined(ASIO_HAS_MOVE)
+# include <utility>
+#endif // defined(ASIO_HAS_MOVE)
+
+#if defined(ASIO_ENABLE_OLD_SERVICES)
+# include "asio/socket_acceptor_service.hpp"
+#else // defined(ASIO_ENABLE_OLD_SERVICES)
+# if defined(ASIO_WINDOWS_RUNTIME)
+# include "asio/detail/null_socket_service.hpp"
+# define ASIO_SVC_T detail::null_socket_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 the ability to accept new connections.
+/**
+ * The basic_socket_acceptor class template is used for accepting new socket
+ * connections.
+ *
+ * @par Thread Safety
+ * @e Distinct @e objects: Safe.@n
+ * @e Shared @e objects: Unsafe.
+ *
+ * @par Example
+ * Opening a socket acceptor with the SO_REUSEADDR option enabled:
+ * @code
+ * asio::ip::tcp::acceptor acceptor(io_context);
+ * asio::ip::tcp::endpoint endpoint(asio::ip::tcp::v4(), port);
+ * acceptor.open(endpoint.protocol());
+ * acceptor.set_option(asio::ip::tcp::acceptor::reuse_address(true));
+ * acceptor.bind(endpoint);
+ * acceptor.listen();
+ * @endcode
+ */
+template <typename Protocol
+ ASIO_SVC_TPARAM_DEF1(= socket_acceptor_service<Protocol>)>
+class basic_socket_acceptor
+ : 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 an acceptor.
+#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;
+
+ /// Construct an acceptor without opening it.
+ /**
+ * This constructor creates an acceptor without opening it to listen for new
+ * connections. The open() function must be called before the acceptor can
+ * accept new socket connections.
+ *
+ * @param io_context The io_context object that the acceptor will use to
+ * dispatch handlers for any asynchronous operations performed on the
+ * acceptor.
+ */
+ explicit basic_socket_acceptor(asio::io_context& io_context)
+ : basic_io_object<ASIO_SVC_T>(io_context)
+ {
+ }
+
+ /// Construct an open acceptor.
+ /**
+ * This constructor creates an acceptor and automatically opens it.
+ *
+ * @param io_context The io_context object that the acceptor will use to
+ * dispatch handlers for any asynchronous operations performed on the
+ * acceptor.
+ *
+ * @param protocol An object specifying protocol parameters to be used.
+ *
+ * @throws asio::system_error Thrown on failure.
+ */
+ basic_socket_acceptor(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 an acceptor opened on the given endpoint.
+ /**
+ * This constructor creates an acceptor and automatically opens it to listen
+ * for new connections on the specified endpoint.
+ *
+ * @param io_context The io_context object that the acceptor will use to
+ * dispatch handlers for any asynchronous operations performed on the
+ * acceptor.
+ *
+ * @param endpoint An endpoint on the local machine on which the acceptor
+ * will listen for new connections.
+ *
+ * @param reuse_addr Whether the constructor should set the socket option
+ * socket_base::reuse_address.
+ *
+ * @throws asio::system_error Thrown on failure.
+ *
+ * @note This constructor is equivalent to the following code:
+ * @code
+ * basic_socket_acceptor<Protocol> acceptor(io_context);
+ * acceptor.open(endpoint.protocol());
+ * if (reuse_addr)
+ * acceptor.set_option(socket_base::reuse_address(true));
+ * acceptor.bind(endpoint);
+ * acceptor.listen(listen_backlog);
+ * @endcode
+ */
+ basic_socket_acceptor(asio::io_context& io_context,
+ const endpoint_type& endpoint, bool reuse_addr = true)
+ : 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");
+ if (reuse_addr)
+ {
+ this->get_service().set_option(this->get_implementation(),
+ socket_base::reuse_address(true), ec);
+ asio::detail::throw_error(ec, "set_option");
+ }
+ this->get_service().bind(this->get_implementation(), endpoint, ec);
+ asio::detail::throw_error(ec, "bind");
+ this->get_service().listen(this->get_implementation(),
+ socket_base::max_listen_connections, ec);
+ asio::detail::throw_error(ec, "listen");
+ }
+
+ /// Construct a basic_socket_acceptor on an existing native acceptor.
+ /**
+ * This constructor creates an acceptor object to hold an existing native
+ * acceptor.
+ *
+ * @param io_context The io_context object that the acceptor will use to
+ * dispatch handlers for any asynchronous operations performed on the
+ * acceptor.
+ *
+ * @param protocol An object specifying protocol parameters to be used.
+ *
+ * @param native_acceptor A native acceptor.
+ *
+ * @throws asio::system_error Thrown on failure.
+ */
+ basic_socket_acceptor(asio::io_context& io_context,
+ const protocol_type& protocol, const native_handle_type& native_acceptor)
+ : basic_io_object<ASIO_SVC_T>(io_context)
+ {
+ asio::error_code ec;
+ this->get_service().assign(this->get_implementation(),
+ protocol, native_acceptor, ec);
+ asio::detail::throw_error(ec, "assign");
+ }
+
+#if defined(ASIO_HAS_MOVE) || defined(GENERATING_DOCUMENTATION)
+ /// Move-construct a basic_socket_acceptor from another.
+ /**
+ * This constructor moves an acceptor from one object to another.
+ *
+ * @param other The other basic_socket_acceptor 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_acceptor(io_context&) constructor.
+ */
+ basic_socket_acceptor(basic_socket_acceptor&& other)
+ : basic_io_object<ASIO_SVC_T>(std::move(other))
+ {
+ }
+
+ /// Move-assign a basic_socket_acceptor from another.
+ /**
+ * This assignment operator moves an acceptor from one object to another.
+ *
+ * @param other The other basic_socket_acceptor 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_acceptor(io_context&) constructor.
+ */
+ basic_socket_acceptor& operator=(basic_socket_acceptor&& other)
+ {
+ basic_io_object<ASIO_SVC_T>::operator=(std::move(other));
+ return *this;
+ }
+
+ // All socket acceptors have access to each other's implementations.
+ template <typename Protocol1 ASIO_SVC_TPARAM1>
+ friend class basic_socket_acceptor;
+
+ /// Move-construct a basic_socket_acceptor from an acceptor of another
+ /// protocol type.
+ /**
+ * This constructor moves an acceptor from one object to another.
+ *
+ * @param other The other basic_socket_acceptor 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_acceptor(
+ basic_socket_acceptor<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_acceptor from an acceptor of another protocol
+ /// type.
+ /**
+ * This assignment operator moves an acceptor from one object to another.
+ *
+ * @param other The other basic_socket_acceptor 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_acceptor>::type& operator=(
+ basic_socket_acceptor<Protocol1 ASIO_SVC_TARG1>&& other)
+ {
+ basic_socket_acceptor tmp(std::move(other));
+ basic_io_object<ASIO_SVC_T>::operator=(std::move(tmp));
+ return *this;
+ }
+#endif // defined(ASIO_HAS_MOVE) || defined(GENERATING_DOCUMENTATION)
+
+ /// Destroys the acceptor.
+ /**
+ * This function destroys the acceptor, cancelling any outstanding
+ * asynchronous operations associated with the acceptor as if by calling
+ * @c cancel.
+ */
+ ~basic_socket_acceptor()
+ {
+ }
+
+#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)
+
+ /// Open the acceptor using the specified protocol.
+ /**
+ * This function opens the socket acceptor so that it will use the specified
+ * protocol.
+ *
+ * @param protocol An object specifying which protocol is to be used.
+ *
+ * @throws asio::system_error Thrown on failure.
+ *
+ * @par Example
+ * @code
+ * asio::ip::tcp::acceptor acceptor(io_context);
+ * acceptor.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 acceptor using the specified protocol.
+ /**
+ * This function opens the socket acceptor 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::acceptor acceptor(io_context);
+ * asio::error_code ec;
+ * acceptor.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);
+ }
+
+ /// Assigns an existing native acceptor to the acceptor.
+ /*
+ * This function opens the acceptor to hold an existing native acceptor.
+ *
+ * @param protocol An object specifying which protocol is to be used.
+ *
+ * @param native_acceptor A native acceptor.
+ *
+ * @throws asio::system_error Thrown on failure.
+ */
+ void assign(const protocol_type& protocol,
+ const native_handle_type& native_acceptor)
+ {
+ asio::error_code ec;
+ this->get_service().assign(this->get_implementation(),
+ protocol, native_acceptor, ec);
+ asio::detail::throw_error(ec, "assign");
+ }
+
+ /// Assigns an existing native acceptor to the acceptor.
+ /*
+ * This function opens the acceptor to hold an existing native acceptor.
+ *
+ * @param protocol An object specifying which protocol is to be used.
+ *
+ * @param native_acceptor A native acceptor.
+ *
+ * @param ec Set to indicate what error occurred, if any.
+ */
+ ASIO_SYNC_OP_VOID assign(const protocol_type& protocol,
+ const native_handle_type& native_acceptor, asio::error_code& ec)
+ {
+ this->get_service().assign(this->get_implementation(),
+ protocol, native_acceptor, ec);
+ ASIO_SYNC_OP_VOID_RETURN(ec);
+ }
+
+ /// Determine whether the acceptor is open.
+ bool is_open() const
+ {
+ return this->get_service().is_open(this->get_implementation());
+ }
+
+ /// Bind the acceptor to the given local endpoint.
+ /**
+ * This function binds the socket acceptor to the specified endpoint on the
+ * local machine.
+ *
+ * @param endpoint An endpoint on the local machine to which the socket
+ * acceptor will be bound.
+ *
+ * @throws asio::system_error Thrown on failure.
+ *
+ * @par Example
+ * @code
+ * asio::ip::tcp::acceptor acceptor(io_context);
+ * asio::ip::tcp::endpoint endpoint(asio::ip::tcp::v4(), 12345);
+ * acceptor.open(endpoint.protocol());
+ * acceptor.bind(endpoint);
+ * @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 acceptor to the given local endpoint.
+ /**
+ * This function binds the socket acceptor to the specified endpoint on the
+ * local machine.
+ *
+ * @param endpoint An endpoint on the local machine to which the socket
+ * acceptor will be bound.
+ *
+ * @param ec Set to indicate what error occurred, if any.
+ *
+ * @par Example
+ * @code
+ * asio::ip::tcp::acceptor acceptor(io_context);
+ * asio::ip::tcp::endpoint endpoint(asio::ip::tcp::v4(), 12345);
+ * acceptor.open(endpoint.protocol());
+ * asio::error_code ec;
+ * acceptor.bind(endpoint, 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);
+ }
+
+ /// Place the acceptor into the state where it will listen for new
+ /// connections.
+ /**
+ * This function puts the socket acceptor into the state where it may accept
+ * new connections.
+ *
+ * @param backlog The maximum length of the queue of pending connections.
+ *
+ * @throws asio::system_error Thrown on failure.
+ */
+ void listen(int backlog = socket_base::max_listen_connections)
+ {
+ asio::error_code ec;
+ this->get_service().listen(this->get_implementation(), backlog, ec);
+ asio::detail::throw_error(ec, "listen");
+ }
+
+ /// Place the acceptor into the state where it will listen for new
+ /// connections.
+ /**
+ * This function puts the socket acceptor into the state where it may accept
+ * new connections.
+ *
+ * @param backlog The maximum length of the queue of pending connections.
+ *
+ * @param ec Set to indicate what error occurred, if any.
+ *
+ * @par Example
+ * @code
+ * asio::ip::tcp::acceptor acceptor(io_context);
+ * ...
+ * asio::error_code ec;
+ * acceptor.listen(asio::socket_base::max_listen_connections, ec);
+ * if (ec)
+ * {
+ * // An error occurred.
+ * }
+ * @endcode
+ */
+ ASIO_SYNC_OP_VOID listen(int backlog, asio::error_code& ec)
+ {
+ this->get_service().listen(this->get_implementation(), backlog, ec);
+ ASIO_SYNC_OP_VOID_RETURN(ec);
+ }
+
+ /// Close the acceptor.
+ /**
+ * This function is used to close the acceptor. Any asynchronous accept
+ * operations will be cancelled immediately.
+ *
+ * A subsequent call to open() is required before the acceptor can again be
+ * used to again perform socket accept operations.
+ *
+ * @throws asio::system_error Thrown on failure.
+ */
+ void close()
+ {
+ asio::error_code ec;
+ this->get_service().close(this->get_implementation(), ec);
+ asio::detail::throw_error(ec, "close");
+ }
+
+ /// Close the acceptor.
+ /**
+ * This function is used to close the acceptor. Any asynchronous accept
+ * operations will be cancelled immediately.
+ *
+ * A subsequent call to open() is required before the acceptor can again be
+ * used to again perform socket accept operations.
+ *
+ * @param ec Set to indicate what error occurred, if any.
+ *
+ * @par Example
+ * @code
+ * asio::ip::tcp::acceptor acceptor(io_context);
+ * ...
+ * asio::error_code ec;
+ * acceptor.close(ec);
+ * if (ec)
+ * {
+ * // An error occurred.
+ * }
+ * @endcode
+ */
+ 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 acceptor.
+ /**
+ * This function causes all outstanding asynchronous accept operations to
+ * finish immediately, and the handlers for cancelled operations will be
+ * passed the asio::error::operation_aborted error. Ownership of the
+ * native acceptor 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 acceptor.
+ /**
+ * This function causes all outstanding asynchronous accept operations to
+ * finish immediately, and the handlers for cancelled operations will be
+ * passed the asio::error::operation_aborted error. Ownership of the
+ * native acceptor 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 acceptor representation.
+ /**
+ * This function may be used to obtain the underlying representation of the
+ * acceptor. This is intended to allow access to native acceptor 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 acceptor.
+ /**
+ * 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.
+ */
+ 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 acceptor.
+ /**
+ * 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.
+ */
+ ASIO_SYNC_OP_VOID cancel(asio::error_code& ec)
+ {
+ this->get_service().cancel(this->get_implementation(), ec);
+ ASIO_SYNC_OP_VOID_RETURN(ec);
+ }
+
+ /// Set an option on the acceptor.
+ /**
+ * This function is used to set an option on the acceptor.
+ *
+ * @param option The new option value to be set on the acceptor.
+ *
+ * @throws asio::system_error Thrown on failure.
+ *
+ * @sa SettableSocketOption @n
+ * asio::socket_base::reuse_address
+ * asio::socket_base::enable_connection_aborted
+ *
+ * @par Example
+ * Setting the SOL_SOCKET/SO_REUSEADDR option:
+ * @code
+ * asio::ip::tcp::acceptor acceptor(io_context);
+ * ...
+ * asio::ip::tcp::acceptor::reuse_address option(true);
+ * acceptor.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 acceptor.
+ /**
+ * This function is used to set an option on the acceptor.
+ *
+ * @param option The new option value to be set on the acceptor.
+ *
+ * @param ec Set to indicate what error occurred, if any.
+ *
+ * @sa SettableSocketOption @n
+ * asio::socket_base::reuse_address
+ * asio::socket_base::enable_connection_aborted
+ *
+ * @par Example
+ * Setting the SOL_SOCKET/SO_REUSEADDR option:
+ * @code
+ * asio::ip::tcp::acceptor acceptor(io_context);
+ * ...
+ * asio::ip::tcp::acceptor::reuse_address option(true);
+ * asio::error_code ec;
+ * acceptor.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 acceptor.
+ /**
+ * This function is used to get the current value of an option on the
+ * acceptor.
+ *
+ * @param option The option value to be obtained from the acceptor.
+ *
+ * @throws asio::system_error Thrown on failure.
+ *
+ * @sa GettableSocketOption @n
+ * asio::socket_base::reuse_address
+ *
+ * @par Example
+ * Getting the value of the SOL_SOCKET/SO_REUSEADDR option:
+ * @code
+ * asio::ip::tcp::acceptor acceptor(io_context);
+ * ...
+ * asio::ip::tcp::acceptor::reuse_address option;
+ * acceptor.get_option(option);
+ * bool is_set = option.get();
+ * @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 acceptor.
+ /**
+ * This function is used to get the current value of an option on the
+ * acceptor.
+ *
+ * @param option The option value to be obtained from the acceptor.
+ *
+ * @param ec Set to indicate what error occurred, if any.
+ *
+ * @sa GettableSocketOption @n
+ * asio::socket_base::reuse_address
+ *
+ * @par Example
+ * Getting the value of the SOL_SOCKET/SO_REUSEADDR option:
+ * @code
+ * asio::ip::tcp::acceptor acceptor(io_context);
+ * ...
+ * asio::ip::tcp::acceptor::reuse_address option;
+ * asio::error_code ec;
+ * acceptor.get_option(option, ec);
+ * if (ec)
+ * {
+ * // An error occurred.
+ * }
+ * bool is_set = option.get();
+ * @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 acceptor.
+ /**
+ * This function is used to execute an IO control command on the acceptor.
+ *
+ * @param command The IO control command to be performed on the acceptor.
+ *
+ * @throws asio::system_error Thrown on failure.
+ *
+ * @sa IoControlCommand @n
+ * asio::socket_base::non_blocking_io
+ *
+ * @par Example
+ * Getting the number of bytes ready to read:
+ * @code
+ * asio::ip::tcp::acceptor acceptor(io_context);
+ * ...
+ * asio::ip::tcp::acceptor::non_blocking_io command(true);
+ * socket.io_control(command);
+ * @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 acceptor.
+ /**
+ * This function is used to execute an IO control command on the acceptor.
+ *
+ * @param command The IO control command to be performed on the acceptor.
+ *
+ * @param ec Set to indicate what error occurred, if any.
+ *
+ * @sa IoControlCommand @n
+ * asio::socket_base::non_blocking_io
+ *
+ * @par Example
+ * Getting the number of bytes ready to read:
+ * @code
+ * asio::ip::tcp::acceptor acceptor(io_context);
+ * ...
+ * asio::ip::tcp::acceptor::non_blocking_io command(true);
+ * asio::error_code ec;
+ * socket.io_control(command, ec);
+ * if (ec)
+ * {
+ * // An error occurred.
+ * }
+ * @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 acceptor.
+ /**
+ * @returns @c true if the acceptor'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 acceptor.
+ /**
+ * @param mode If @c true, the acceptor'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 acceptor.
+ /**
+ * @param mode If @c true, the acceptor'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 acceptor implementation.
+ /**
+ * This function is used to retrieve the non-blocking mode of the underlying
+ * native acceptor. This mode has no effect on the behaviour of the acceptor
+ * object's synchronous operations.
+ *
+ * @returns @c true if the underlying acceptor 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 acceptor object.
+ * Consequently, the return value may be incorrect if the non-blocking mode
+ * was set directly on the native acceptor.
+ */
+ bool native_non_blocking() const
+ {
+ return this->get_service().native_non_blocking(this->get_implementation());
+ }
+
+ /// Sets the non-blocking mode of the native acceptor implementation.
+ /**
+ * This function is used to modify the non-blocking mode of the underlying
+ * native acceptor. It has no effect on the behaviour of the acceptor object's
+ * synchronous operations.
+ *
+ * @param mode If @c true, the underlying acceptor 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.
+ */
+ 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 acceptor implementation.
+ /**
+ * This function is used to modify the non-blocking mode of the underlying
+ * native acceptor. It has no effect on the behaviour of the acceptor object's
+ * synchronous operations.
+ *
+ * @param mode If @c true, the underlying acceptor 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.
+ */
+ 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 acceptor.
+ /**
+ * This function is used to obtain the locally bound endpoint of the acceptor.
+ *
+ * @returns An object that represents the local endpoint of the acceptor.
+ *
+ * @throws asio::system_error Thrown on failure.
+ *
+ * @par Example
+ * @code
+ * asio::ip::tcp::acceptor acceptor(io_context);
+ * ...
+ * asio::ip::tcp::endpoint endpoint = acceptor.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 acceptor.
+ /**
+ * This function is used to obtain the locally bound endpoint of the acceptor.
+ *
+ * @param ec Set to indicate what error occurred, if any.
+ *
+ * @returns An object that represents the local endpoint of the acceptor.
+ * Returns a default-constructed endpoint object if an error occurred and the
+ * error handler did not throw an exception.
+ *
+ * @par Example
+ * @code
+ * asio::ip::tcp::acceptor acceptor(io_context);
+ * ...
+ * asio::error_code ec;
+ * asio::ip::tcp::endpoint endpoint = acceptor.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);
+ }
+
+ /// Wait for the acceptor to become ready to read, ready to write, or to have
+ /// pending error conditions.
+ /**
+ * This function is used to perform a blocking wait for an acceptor to enter
+ * a ready to read, write or error condition state.
+ *
+ * @param w Specifies the desired acceptor state.
+ *
+ * @par Example
+ * Waiting for an acceptor to become readable.
+ * @code
+ * asio::ip::tcp::acceptor acceptor(io_context);
+ * ...
+ * acceptor.wait(asio::ip::tcp::acceptor::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 acceptor to become ready to read, ready to write, or to have
+ /// pending error conditions.
+ /**
+ * This function is used to perform a blocking wait for an acceptor to enter
+ * a ready to read, write or error condition state.
+ *
+ * @param w Specifies the desired acceptor state.
+ *
+ * @param ec Set to indicate what error occurred, if any.
+ *
+ * @par Example
+ * Waiting for an acceptor to become readable.
+ * @code
+ * asio::ip::tcp::acceptor acceptor(io_context);
+ * ...
+ * asio::error_code ec;
+ * acceptor.wait(asio::ip::tcp::acceptor::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 acceptor to become ready to read, ready to
+ /// write, or to have pending error conditions.
+ /**
+ * This function is used to perform an asynchronous wait for an acceptor to
+ * enter a ready to read, write or error condition state.
+ *
+ * @param w Specifies the desired acceptor 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::acceptor acceptor(io_context);
+ * ...
+ * acceptor.async_wait(
+ * asio::ip::tcp::acceptor::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)
+ }
+
+#if !defined(ASIO_NO_EXTENSIONS)
+ /// Accept a new connection.
+ /**
+ * This function is used to accept a new connection from a peer into the
+ * given socket. The function call will block until a new connection has been
+ * accepted successfully or an error occurs.
+ *
+ * @param peer The socket into which the new connection will be accepted.
+ *
+ * @throws asio::system_error Thrown on failure.
+ *
+ * @par Example
+ * @code
+ * asio::ip::tcp::acceptor acceptor(io_context);
+ * ...
+ * asio::ip::tcp::socket socket(io_context);
+ * acceptor.accept(socket);
+ * @endcode
+ */
+#if defined(ASIO_ENABLE_OLD_SERVICES)
+ template <typename Protocol1, typename SocketService>
+ void accept(basic_socket<Protocol1, SocketService>& peer,
+ typename enable_if<is_convertible<Protocol, Protocol1>::value>::type* = 0)
+#else // defined(ASIO_ENABLE_OLD_SERVICES)
+ template <typename Protocol1>
+ void accept(basic_socket<Protocol1>& peer,
+ typename enable_if<is_convertible<Protocol, Protocol1>::value>::type* = 0)
+#endif // defined(ASIO_ENABLE_OLD_SERVICES)
+ {
+ asio::error_code ec;
+ this->get_service().accept(this->get_implementation(),
+ peer, static_cast<endpoint_type*>(0), ec);
+ asio::detail::throw_error(ec, "accept");
+ }
+
+ /// Accept a new connection.
+ /**
+ * This function is used to accept a new connection from a peer into the
+ * given socket. The function call will block until a new connection has been
+ * accepted successfully or an error occurs.
+ *
+ * @param peer The socket into which the new connection will be accepted.
+ *
+ * @param ec Set to indicate what error occurred, if any.
+ *
+ * @par Example
+ * @code
+ * asio::ip::tcp::acceptor acceptor(io_context);
+ * ...
+ * asio::ip::tcp::socket socket(io_context);
+ * asio::error_code ec;
+ * acceptor.accept(socket, ec);
+ * if (ec)
+ * {
+ * // An error occurred.
+ * }
+ * @endcode
+ */
+#if defined(ASIO_ENABLE_OLD_SERVICES)
+ template <typename Protocol1, typename SocketService>
+ ASIO_SYNC_OP_VOID accept(
+ basic_socket<Protocol1, SocketService>& peer,
+ asio::error_code& ec,
+ typename enable_if<is_convertible<Protocol, Protocol1>::value>::type* = 0)
+#else // defined(ASIO_ENABLE_OLD_SERVICES)
+ template <typename Protocol1>
+ ASIO_SYNC_OP_VOID accept(
+ basic_socket<Protocol1>& peer, asio::error_code& ec,
+ typename enable_if<is_convertible<Protocol, Protocol1>::value>::type* = 0)
+#endif // defined(ASIO_ENABLE_OLD_SERVICES)
+ {
+ this->get_service().accept(this->get_implementation(),
+ peer, static_cast<endpoint_type*>(0), ec);
+ ASIO_SYNC_OP_VOID_RETURN(ec);
+ }
+
+ /// Start an asynchronous accept.
+ /**
+ * This function is used to asynchronously accept a new connection into a
+ * socket. The function call always returns immediately.
+ *
+ * @param peer The socket into which the new connection will be accepted.
+ * Ownership of the peer object is retained by the caller, which must
+ * guarantee that it is valid until the handler is called.
+ *
+ * @param handler The handler to be called when the accept 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 accept_handler(const asio::error_code& error)
+ * {
+ * if (!error)
+ * {
+ * // Accept succeeded.
+ * }
+ * }
+ *
+ * ...
+ *
+ * asio::ip::tcp::acceptor acceptor(io_context);
+ * ...
+ * asio::ip::tcp::socket socket(io_context);
+ * acceptor.async_accept(socket, accept_handler);
+ * @endcode
+ */
+#if defined(ASIO_ENABLE_OLD_SERVICES)
+ template <typename Protocol1, typename SocketService, typename AcceptHandler>
+ ASIO_INITFN_RESULT_TYPE(AcceptHandler,
+ void (asio::error_code))
+ async_accept(basic_socket<Protocol1, SocketService>& peer,
+ ASIO_MOVE_ARG(AcceptHandler) handler,
+ typename enable_if<is_convertible<Protocol, Protocol1>::value>::type* = 0)
+#else // defined(ASIO_ENABLE_OLD_SERVICES)
+ template <typename Protocol1, typename AcceptHandler>
+ ASIO_INITFN_RESULT_TYPE(AcceptHandler,
+ void (asio::error_code))
+ async_accept(basic_socket<Protocol1>& peer,
+ ASIO_MOVE_ARG(AcceptHandler) handler,
+ typename enable_if<is_convertible<Protocol, Protocol1>::value>::type* = 0)
+#endif // defined(ASIO_ENABLE_OLD_SERVICES)
+ {
+ // If you get an error on the following line it means that your handler does
+ // not meet the documented type requirements for a AcceptHandler.
+ ASIO_ACCEPT_HANDLER_CHECK(AcceptHandler, handler) type_check;
+
+#if defined(ASIO_ENABLE_OLD_SERVICES)
+ return this->get_service().async_accept(this->get_implementation(),
+ peer, static_cast<endpoint_type*>(0),
+ ASIO_MOVE_CAST(AcceptHandler)(handler));
+#else // defined(ASIO_ENABLE_OLD_SERVICES)
+ async_completion<AcceptHandler,
+ void (asio::error_code)> init(handler);
+
+ this->get_service().async_accept(this->get_implementation(),
+ peer, static_cast<endpoint_type*>(0), init.completion_handler);
+
+ return init.result.get();
+#endif // defined(ASIO_ENABLE_OLD_SERVICES)
+ }
+
+ /// Accept a new connection and obtain the endpoint of the peer
+ /**
+ * This function is used to accept a new connection from a peer into the
+ * given socket, and additionally provide the endpoint of the remote peer.
+ * The function call will block until a new connection has been accepted
+ * successfully or an error occurs.
+ *
+ * @param peer The socket into which the new connection will be accepted.
+ *
+ * @param peer_endpoint An endpoint object which will receive the endpoint of
+ * the remote peer.
+ *
+ * @throws asio::system_error Thrown on failure.
+ *
+ * @par Example
+ * @code
+ * asio::ip::tcp::acceptor acceptor(io_context);
+ * ...
+ * asio::ip::tcp::socket socket(io_context);
+ * asio::ip::tcp::endpoint endpoint;
+ * acceptor.accept(socket, endpoint);
+ * @endcode
+ */
+#if defined(ASIO_ENABLE_OLD_SERVICES)
+ template <typename SocketService>
+ void accept(basic_socket<protocol_type, SocketService>& peer,
+ endpoint_type& peer_endpoint)
+#else // defined(ASIO_ENABLE_OLD_SERVICES)
+ void accept(basic_socket<protocol_type>& peer, endpoint_type& peer_endpoint)
+#endif // defined(ASIO_ENABLE_OLD_SERVICES)
+ {
+ asio::error_code ec;
+ this->get_service().accept(this->get_implementation(),
+ peer, &peer_endpoint, ec);
+ asio::detail::throw_error(ec, "accept");
+ }
+
+ /// Accept a new connection and obtain the endpoint of the peer
+ /**
+ * This function is used to accept a new connection from a peer into the
+ * given socket, and additionally provide the endpoint of the remote peer.
+ * The function call will block until a new connection has been accepted
+ * successfully or an error occurs.
+ *
+ * @param peer The socket into which the new connection will be accepted.
+ *
+ * @param peer_endpoint An endpoint object which will receive the endpoint of
+ * the remote peer.
+ *
+ * @param ec Set to indicate what error occurred, if any.
+ *
+ * @par Example
+ * @code
+ * asio::ip::tcp::acceptor acceptor(io_context);
+ * ...
+ * asio::ip::tcp::socket socket(io_context);
+ * asio::ip::tcp::endpoint endpoint;
+ * asio::error_code ec;
+ * acceptor.accept(socket, endpoint, ec);
+ * if (ec)
+ * {
+ * // An error occurred.
+ * }
+ * @endcode
+ */
+#if defined(ASIO_ENABLE_OLD_SERVICES)
+ template <typename SocketService>
+ ASIO_SYNC_OP_VOID accept(
+ basic_socket<protocol_type, SocketService>& peer,
+ endpoint_type& peer_endpoint, asio::error_code& ec)
+#else // defined(ASIO_ENABLE_OLD_SERVICES)
+ ASIO_SYNC_OP_VOID accept(basic_socket<protocol_type>& peer,
+ endpoint_type& peer_endpoint, asio::error_code& ec)
+#endif // defined(ASIO_ENABLE_OLD_SERVICES)
+ {
+ this->get_service().accept(
+ this->get_implementation(), peer, &peer_endpoint, ec);
+ ASIO_SYNC_OP_VOID_RETURN(ec);
+ }
+
+ /// Start an asynchronous accept.
+ /**
+ * This function is used to asynchronously accept a new connection into a
+ * socket, and additionally obtain the endpoint of the remote peer. The
+ * function call always returns immediately.
+ *
+ * @param peer The socket into which the new connection will be accepted.
+ * Ownership of the peer object is retained by the caller, which must
+ * guarantee that it is valid until the handler is called.
+ *
+ * @param peer_endpoint An endpoint object into which the endpoint of the
+ * remote peer will be written. Ownership of the peer_endpoint object is
+ * retained by the caller, which must guarantee that it is valid until the
+ * handler is called.
+ *
+ * @param handler The handler to be called when the accept 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().
+ */
+#if defined(ASIO_ENABLE_OLD_SERVICES)
+ template <typename SocketService, typename AcceptHandler>
+ ASIO_INITFN_RESULT_TYPE(AcceptHandler,
+ void (asio::error_code))
+ async_accept(basic_socket<protocol_type, SocketService>& peer,
+ endpoint_type& peer_endpoint, ASIO_MOVE_ARG(AcceptHandler) handler)
+#else // defined(ASIO_ENABLE_OLD_SERVICES)
+ template <typename AcceptHandler>
+ ASIO_INITFN_RESULT_TYPE(AcceptHandler,
+ void (asio::error_code))
+ async_accept(basic_socket<protocol_type>& peer,
+ endpoint_type& peer_endpoint, ASIO_MOVE_ARG(AcceptHandler) handler)
+#endif // defined(ASIO_ENABLE_OLD_SERVICES)
+ {
+ // If you get an error on the following line it means that your handler does
+ // not meet the documented type requirements for a AcceptHandler.
+ ASIO_ACCEPT_HANDLER_CHECK(AcceptHandler, handler) type_check;
+
+#if defined(ASIO_ENABLE_OLD_SERVICES)
+ return this->get_service().async_accept(this->get_implementation(), peer,
+ &peer_endpoint, ASIO_MOVE_CAST(AcceptHandler)(handler));
+#else // defined(ASIO_ENABLE_OLD_SERVICES)
+ async_completion<AcceptHandler,
+ void (asio::error_code)> init(handler);
+
+ this->get_service().async_accept(this->get_implementation(),
+ peer, &peer_endpoint, init.completion_handler);
+
+ return init.result.get();
+#endif // defined(ASIO_ENABLE_OLD_SERVICES)
+ }
+#endif // !defined(ASIO_NO_EXTENSIONS)
+
+#if defined(ASIO_HAS_MOVE) || defined(GENERATING_DOCUMENTATION)
+ /// Accept a new connection.
+ /**
+ * This function is used to accept a new connection from a peer. The function
+ * call will block until a new connection has been accepted successfully or
+ * an error occurs.
+ *
+ * This overload requires that the Protocol template parameter satisfy the
+ * AcceptableProtocol type requirements.
+ *
+ * @returns A socket object representing the newly accepted connection.
+ *
+ * @throws asio::system_error Thrown on failure.
+ *
+ * @par Example
+ * @code
+ * asio::ip::tcp::acceptor acceptor(io_context);
+ * ...
+ * asio::ip::tcp::socket socket(acceptor.accept());
+ * @endcode
+ */
+ typename Protocol::socket accept()
+ {
+ asio::error_code ec;
+ typename Protocol::socket peer(
+ this->get_service().accept(
+ this->get_implementation(), 0, 0, ec));
+ asio::detail::throw_error(ec, "accept");
+ return peer;
+ }
+
+ /// Accept a new connection.
+ /**
+ * This function is used to accept a new connection from a peer. The function
+ * call will block until a new connection has been accepted successfully or
+ * an error occurs.
+ *
+ * This overload requires that the Protocol template parameter satisfy the
+ * AcceptableProtocol type requirements.
+ *
+ * @param ec Set to indicate what error occurred, if any.
+ *
+ * @returns On success, a socket object representing the newly accepted
+ * connection. On error, a socket object where is_open() is false.
+ *
+ * @par Example
+ * @code
+ * asio::ip::tcp::acceptor acceptor(io_context);
+ * ...
+ * asio::ip::tcp::socket socket(acceptor.accept(ec));
+ * if (ec)
+ * {
+ * // An error occurred.
+ * }
+ * @endcode
+ */
+ typename Protocol::socket accept(asio::error_code& ec)
+ {
+ return this->get_service().accept(this->get_implementation(), 0, 0, ec);
+ }
+
+ /// Start an asynchronous accept.
+ /**
+ * This function is used to asynchronously accept a new connection. The
+ * function call always returns immediately.
+ *
+ * This overload requires that the Protocol template parameter satisfy the
+ * AcceptableProtocol type requirements.
+ *
+ * @param handler The handler to be called when the accept 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.
+ * typename Protocol::socket peer // On success, the newly accepted socket.
+ * ); @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 accept_handler(const asio::error_code& error,
+ * asio::ip::tcp::socket peer)
+ * {
+ * if (!error)
+ * {
+ * // Accept succeeded.
+ * }
+ * }
+ *
+ * ...
+ *
+ * asio::ip::tcp::acceptor acceptor(io_context);
+ * ...
+ * acceptor.async_accept(accept_handler);
+ * @endcode
+ */
+ template <typename MoveAcceptHandler>
+ ASIO_INITFN_RESULT_TYPE(MoveAcceptHandler,
+ void (asio::error_code, typename Protocol::socket))
+ async_accept(ASIO_MOVE_ARG(MoveAcceptHandler) handler)
+ {
+ // If you get an error on the following line it means that your handler does
+ // not meet the documented type requirements for a MoveAcceptHandler.
+ ASIO_MOVE_ACCEPT_HANDLER_CHECK(MoveAcceptHandler,
+ handler, typename Protocol::socket) type_check;
+
+#if defined(ASIO_ENABLE_OLD_SERVICES)
+ return this->get_service().async_accept(
+ this->get_implementation(), static_cast<asio::io_context*>(0),
+ static_cast<endpoint_type*>(0),
+ ASIO_MOVE_CAST(MoveAcceptHandler)(handler));
+#else // defined(ASIO_ENABLE_OLD_SERVICES)
+ async_completion<MoveAcceptHandler,
+ void (asio::error_code,
+ typename Protocol::socket)> init(handler);
+
+ this->get_service().async_accept(
+ this->get_implementation(), static_cast<asio::io_context*>(0),
+ static_cast<endpoint_type*>(0), init.completion_handler);
+
+ return init.result.get();
+#endif // defined(ASIO_ENABLE_OLD_SERVICES)
+ }
+
+ /// Accept a new connection.
+ /**
+ * This function is used to accept a new connection from a peer. The function
+ * call will block until a new connection has been accepted successfully or
+ * an error occurs.
+ *
+ * This overload requires that the Protocol template parameter satisfy the
+ * AcceptableProtocol type requirements.
+ *
+ * @param io_context The io_context object to be used for the newly accepted
+ * socket.
+ *
+ * @returns A socket object representing the newly accepted connection.
+ *
+ * @throws asio::system_error Thrown on failure.
+ *
+ * @par Example
+ * @code
+ * asio::ip::tcp::acceptor acceptor(io_context);
+ * ...
+ * asio::ip::tcp::socket socket(acceptor.accept());
+ * @endcode
+ */
+ typename Protocol::socket accept(asio::io_context& io_context)
+ {
+ asio::error_code ec;
+ typename Protocol::socket peer(
+ this->get_service().accept(this->get_implementation(),
+ &io_context, static_cast<endpoint_type*>(0), ec));
+ asio::detail::throw_error(ec, "accept");
+ return peer;
+ }
+
+ /// Accept a new connection.
+ /**
+ * This function is used to accept a new connection from a peer. The function
+ * call will block until a new connection has been accepted successfully or
+ * an error occurs.
+ *
+ * This overload requires that the Protocol template parameter satisfy the
+ * AcceptableProtocol type requirements.
+ *
+ * @param io_context The io_context object to be used for the newly accepted
+ * socket.
+ *
+ * @param ec Set to indicate what error occurred, if any.
+ *
+ * @returns On success, a socket object representing the newly accepted
+ * connection. On error, a socket object where is_open() is false.
+ *
+ * @par Example
+ * @code
+ * asio::ip::tcp::acceptor acceptor(io_context);
+ * ...
+ * asio::ip::tcp::socket socket(acceptor.accept(io_context2, ec));
+ * if (ec)
+ * {
+ * // An error occurred.
+ * }
+ * @endcode
+ */
+ typename Protocol::socket accept(
+ asio::io_context& io_context, asio::error_code& ec)
+ {
+ return this->get_service().accept(this->get_implementation(),
+ &io_context, static_cast<endpoint_type*>(0), ec);
+ }
+
+ /// Start an asynchronous accept.
+ /**
+ * This function is used to asynchronously accept a new connection. The
+ * function call always returns immediately.
+ *
+ * This overload requires that the Protocol template parameter satisfy the
+ * AcceptableProtocol type requirements.
+ *
+ * @param io_context The io_context object to be used for the newly accepted
+ * socket.
+ *
+ * @param handler The handler to be called when the accept 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.
+ * typename Protocol::socket peer // On success, the newly accepted socket.
+ * ); @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 accept_handler(const asio::error_code& error,
+ * asio::ip::tcp::socket peer)
+ * {
+ * if (!error)
+ * {
+ * // Accept succeeded.
+ * }
+ * }
+ *
+ * ...
+ *
+ * asio::ip::tcp::acceptor acceptor(io_context);
+ * ...
+ * acceptor.async_accept(io_context2, accept_handler);
+ * @endcode
+ */
+ template <typename MoveAcceptHandler>
+ ASIO_INITFN_RESULT_TYPE(MoveAcceptHandler,
+ void (asio::error_code, typename Protocol::socket))
+ async_accept(asio::io_context& io_context,
+ ASIO_MOVE_ARG(MoveAcceptHandler) handler)
+ {
+ // If you get an error on the following line it means that your handler does
+ // not meet the documented type requirements for a MoveAcceptHandler.
+ ASIO_MOVE_ACCEPT_HANDLER_CHECK(MoveAcceptHandler,
+ handler, typename Protocol::socket) type_check;
+
+#if defined(ASIO_ENABLE_OLD_SERVICES)
+ return this->get_service().async_accept(this->get_implementation(),
+ &io_context, static_cast<endpoint_type*>(0),
+ ASIO_MOVE_CAST(MoveAcceptHandler)(handler));
+#else // defined(ASIO_ENABLE_OLD_SERVICES)
+ async_completion<MoveAcceptHandler,
+ void (asio::error_code,
+ typename Protocol::socket)> init(handler);
+
+ this->get_service().async_accept(this->get_implementation(),
+ &io_context, static_cast<endpoint_type*>(0), init.completion_handler);
+
+ return init.result.get();
+#endif // defined(ASIO_ENABLE_OLD_SERVICES)
+ }
+
+ /// Accept a new connection.
+ /**
+ * This function is used to accept a new connection from a peer. The function
+ * call will block until a new connection has been accepted successfully or
+ * an error occurs.
+ *
+ * This overload requires that the Protocol template parameter satisfy the
+ * AcceptableProtocol type requirements.
+ *
+ * @param peer_endpoint An endpoint object into which the endpoint of the
+ * remote peer will be written.
+ *
+ * @returns A socket object representing the newly accepted connection.
+ *
+ * @throws asio::system_error Thrown on failure.
+ *
+ * @par Example
+ * @code
+ * asio::ip::tcp::acceptor acceptor(io_context);
+ * ...
+ * asio::ip::tcp::endpoint endpoint;
+ * asio::ip::tcp::socket socket(acceptor.accept(endpoint));
+ * @endcode
+ */
+ typename Protocol::socket accept(endpoint_type& peer_endpoint)
+ {
+ asio::error_code ec;
+ typename Protocol::socket peer(
+ this->get_service().accept(this->get_implementation(),
+ static_cast<asio::io_context*>(0), &peer_endpoint, ec));
+ asio::detail::throw_error(ec, "accept");
+ return peer;
+ }
+
+ /// Accept a new connection.
+ /**
+ * This function is used to accept a new connection from a peer. The function
+ * call will block until a new connection has been accepted successfully or
+ * an error occurs.
+ *
+ * This overload requires that the Protocol template parameter satisfy the
+ * AcceptableProtocol type requirements.
+ *
+ * @param peer_endpoint An endpoint object into which the endpoint of the
+ * remote peer will be written.
+ *
+ * @param ec Set to indicate what error occurred, if any.
+ *
+ * @returns On success, a socket object representing the newly accepted
+ * connection. On error, a socket object where is_open() is false.
+ *
+ * @par Example
+ * @code
+ * asio::ip::tcp::acceptor acceptor(io_context);
+ * ...
+ * asio::ip::tcp::endpoint endpoint;
+ * asio::ip::tcp::socket socket(acceptor.accept(endpoint, ec));
+ * if (ec)
+ * {
+ * // An error occurred.
+ * }
+ * @endcode
+ */
+ typename Protocol::socket accept(
+ endpoint_type& peer_endpoint, asio::error_code& ec)
+ {
+ return this->get_service().accept(this->get_implementation(),
+ static_cast<asio::io_context*>(0), &peer_endpoint, ec);
+ }
+
+ /// Start an asynchronous accept.
+ /**
+ * This function is used to asynchronously accept a new connection. The
+ * function call always returns immediately.
+ *
+ * This overload requires that the Protocol template parameter satisfy the
+ * AcceptableProtocol type requirements.
+ *
+ * @param peer_endpoint An endpoint object into which the endpoint of the
+ * remote peer will be written. Ownership of the peer_endpoint object is
+ * retained by the caller, which must guarantee that it is valid until the
+ * handler is called.
+ *
+ * @param handler The handler to be called when the accept 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.
+ * typename Protocol::socket peer // On success, the newly accepted socket.
+ * ); @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 accept_handler(const asio::error_code& error,
+ * asio::ip::tcp::socket peer)
+ * {
+ * if (!error)
+ * {
+ * // Accept succeeded.
+ * }
+ * }
+ *
+ * ...
+ *
+ * asio::ip::tcp::acceptor acceptor(io_context);
+ * ...
+ * asio::ip::tcp::endpoint endpoint;
+ * acceptor.async_accept(endpoint, accept_handler);
+ * @endcode
+ */
+ template <typename MoveAcceptHandler>
+ ASIO_INITFN_RESULT_TYPE(MoveAcceptHandler,
+ void (asio::error_code, typename Protocol::socket))
+ async_accept(endpoint_type& peer_endpoint,
+ ASIO_MOVE_ARG(MoveAcceptHandler) handler)
+ {
+ // If you get an error on the following line it means that your handler does
+ // not meet the documented type requirements for a MoveAcceptHandler.
+ ASIO_MOVE_ACCEPT_HANDLER_CHECK(MoveAcceptHandler,
+ handler, typename Protocol::socket) type_check;
+
+#if defined(ASIO_ENABLE_OLD_SERVICES)
+ return this->get_service().async_accept(this->get_implementation(),
+ static_cast<asio::io_context*>(0), &peer_endpoint,
+ ASIO_MOVE_CAST(MoveAcceptHandler)(handler));
+#else // defined(ASIO_ENABLE_OLD_SERVICES)
+ async_completion<MoveAcceptHandler,
+ void (asio::error_code,
+ typename Protocol::socket)> init(handler);
+
+ this->get_service().async_accept(this->get_implementation(),
+ static_cast<asio::io_context*>(0), &peer_endpoint,
+ init.completion_handler);
+
+ return init.result.get();
+#endif // defined(ASIO_ENABLE_OLD_SERVICES)
+ }
+
+ /// Accept a new connection.
+ /**
+ * This function is used to accept a new connection from a peer. The function
+ * call will block until a new connection has been accepted successfully or
+ * an error occurs.
+ *
+ * This overload requires that the Protocol template parameter satisfy the
+ * AcceptableProtocol type requirements.
+ *
+ * @param io_context The io_context object to be used for the newly accepted
+ * socket.
+ *
+ * @param peer_endpoint An endpoint object into which the endpoint of the
+ * remote peer will be written.
+ *
+ * @returns A socket object representing the newly accepted connection.
+ *
+ * @throws asio::system_error Thrown on failure.
+ *
+ * @par Example
+ * @code
+ * asio::ip::tcp::acceptor acceptor(io_context);
+ * ...
+ * asio::ip::tcp::endpoint endpoint;
+ * asio::ip::tcp::socket socket(
+ * acceptor.accept(io_context2, endpoint));
+ * @endcode
+ */
+ typename Protocol::socket accept(
+ asio::io_context& io_context, endpoint_type& peer_endpoint)
+ {
+ asio::error_code ec;
+ typename Protocol::socket peer(
+ this->get_service().accept(this->get_implementation(),
+ &io_context, &peer_endpoint, ec));
+ asio::detail::throw_error(ec, "accept");
+ return peer;
+ }
+
+ /// Accept a new connection.
+ /**
+ * This function is used to accept a new connection from a peer. The function
+ * call will block until a new connection has been accepted successfully or
+ * an error occurs.
+ *
+ * This overload requires that the Protocol template parameter satisfy the
+ * AcceptableProtocol type requirements.
+ *
+ * @param io_context The io_context object to be used for the newly accepted
+ * socket.
+ *
+ * @param peer_endpoint An endpoint object into which the endpoint of the
+ * remote peer will be written.
+ *
+ * @param ec Set to indicate what error occurred, if any.
+ *
+ * @returns On success, a socket object representing the newly accepted
+ * connection. On error, a socket object where is_open() is false.
+ *
+ * @par Example
+ * @code
+ * asio::ip::tcp::acceptor acceptor(io_context);
+ * ...
+ * asio::ip::tcp::endpoint endpoint;
+ * asio::ip::tcp::socket socket(
+ * acceptor.accept(io_context2, endpoint, ec));
+ * if (ec)
+ * {
+ * // An error occurred.
+ * }
+ * @endcode
+ */
+ typename Protocol::socket accept(asio::io_context& io_context,
+ endpoint_type& peer_endpoint, asio::error_code& ec)
+ {
+ return this->get_service().accept(this->get_implementation(),
+ &io_context, &peer_endpoint, ec);
+ }
+
+ /// Start an asynchronous accept.
+ /**
+ * This function is used to asynchronously accept a new connection. The
+ * function call always returns immediately.
+ *
+ * This overload requires that the Protocol template parameter satisfy the
+ * AcceptableProtocol type requirements.
+ *
+ * @param io_context The io_context object to be used for the newly accepted
+ * socket.
+ *
+ * @param peer_endpoint An endpoint object into which the endpoint of the
+ * remote peer will be written. Ownership of the peer_endpoint object is
+ * retained by the caller, which must guarantee that it is valid until the
+ * handler is called.
+ *
+ * @param handler The handler to be called when the accept 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.
+ * typename Protocol::socket peer // On success, the newly accepted socket.
+ * ); @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 accept_handler(const asio::error_code& error,
+ * asio::ip::tcp::socket peer)
+ * {
+ * if (!error)
+ * {
+ * // Accept succeeded.
+ * }
+ * }
+ *
+ * ...
+ *
+ * asio::ip::tcp::acceptor acceptor(io_context);
+ * ...
+ * asio::ip::tcp::endpoint endpoint;
+ * acceptor.async_accept(io_context2, endpoint, accept_handler);
+ * @endcode
+ */
+ template <typename MoveAcceptHandler>
+ ASIO_INITFN_RESULT_TYPE(MoveAcceptHandler,
+ void (asio::error_code, typename Protocol::socket))
+ async_accept(asio::io_context& io_context,
+ endpoint_type& peer_endpoint,
+ ASIO_MOVE_ARG(MoveAcceptHandler) handler)
+ {
+ // If you get an error on the following line it means that your handler does
+ // not meet the documented type requirements for a MoveAcceptHandler.
+ ASIO_MOVE_ACCEPT_HANDLER_CHECK(MoveAcceptHandler,
+ handler, typename Protocol::socket) type_check;
+
+#if defined(ASIO_ENABLE_OLD_SERVICES)
+ return this->get_service().async_accept(
+ this->get_implementation(), &io_context, &peer_endpoint,
+ ASIO_MOVE_CAST(MoveAcceptHandler)(handler));
+#else // defined(ASIO_ENABLE_OLD_SERVICES)
+ async_completion<MoveAcceptHandler,
+ void (asio::error_code,
+ typename Protocol::socket)> init(handler);
+
+ this->get_service().async_accept(this->get_implementation(),
+ &io_context, &peer_endpoint, init.completion_handler);
+
+ return init.result.get();
+#endif // defined(ASIO_ENABLE_OLD_SERVICES)
+ }
+#endif // defined(ASIO_HAS_MOVE) || defined(GENERATING_DOCUMENTATION)
+};
+
+} // 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_ACCEPTOR_HPP