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From whe...@apache.org
Subject [39/56] [abbrv] hadoop git commit: HDFS-8724. Import third_party libraries into the repository. Contributed by Haohui Mai.
Date Wed, 07 Oct 2015 07:20:05 GMT
http://git-wip-us.apache.org/repos/asf/hadoop/blob/c3e6c61e/hadoop-hdfs-project/hadoop-hdfs-client/src/main/native/libhdfspp/third_party/asio-1.10.2/include/asio/basic_socket.hpp
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diff --git a/hadoop-hdfs-project/hadoop-hdfs-client/src/main/native/libhdfspp/third_party/asio-1.10.2/include/asio/basic_socket.hpp b/hadoop-hdfs-project/hadoop-hdfs-client/src/main/native/libhdfspp/third_party/asio-1.10.2/include/asio/basic_socket.hpp
new file mode 100644
index 0000000..be4fb3c
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+++ b/hadoop-hdfs-project/hadoop-hdfs-client/src/main/native/libhdfspp/third_party/asio-1.10.2/include/asio/basic_socket.hpp
@@ -0,0 +1,1518 @@
+//
+// basic_socket.hpp
+// ~~~~~~~~~~~~~~~~
+//
+// Copyright (c) 2003-2014 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/socket_base.hpp"
+
+#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, typename SocketService>
+class basic_socket
+  : public basic_io_object<SocketService>,
+    public socket_base
+{
+public:
+  /// (Deprecated: Use native_handle_type.) The native representation of a
+  /// socket.
+  typedef typename SocketService::native_handle_type native_type;
+
+  /// The native representation of a socket.
+  typedef typename SocketService::native_handle_type native_handle_type;
+
+  /// The protocol type.
+  typedef Protocol protocol_type;
+
+  /// The endpoint type.
+  typedef typename Protocol::endpoint endpoint_type;
+
+  /// A basic_socket is always the lowest layer.
+  typedef basic_socket<Protocol, SocketService> lowest_layer_type;
+
+  /// Construct a basic_socket without opening it.
+  /**
+   * This constructor creates a socket without opening it.
+   *
+   * @param io_service The io_service object that the socket will use to
+   * dispatch handlers for any asynchronous operations performed on the socket.
+   */
+  explicit basic_socket(asio::io_service& io_service)
+    : basic_io_object<SocketService>(io_service)
+  {
+  }
+
+  /// Construct and open a basic_socket.
+  /**
+   * This constructor creates and opens a socket.
+   *
+   * @param io_service The io_service object that the socket will use to
+   * dispatch handlers for any asynchronous operations performed on the socket.
+   *
+   * @param protocol An object specifying protocol parameters to be used.
+   *
+   * @throws asio::system_error Thrown on failure.
+   */
+  basic_socket(asio::io_service& io_service,
+      const protocol_type& protocol)
+    : basic_io_object<SocketService>(io_service)
+  {
+    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_service The io_service object that the socket will use to
+   * dispatch handlers for any asynchronous operations performed on the socket.
+   *
+   * @param endpoint An endpoint on the local machine to which the socket will
+   * be bound.
+   *
+   * @throws asio::system_error Thrown on failure.
+   */
+  basic_socket(asio::io_service& io_service,
+      const endpoint_type& endpoint)
+    : basic_io_object<SocketService>(io_service)
+  {
+    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_service The io_service object that the socket will use to
+   * dispatch handlers for any asynchronous operations performed on the socket.
+   *
+   * @param protocol An object specifying protocol parameters to be used.
+   *
+   * @param native_socket A native socket.
+   *
+   * @throws asio::system_error Thrown on failure.
+   */
+  basic_socket(asio::io_service& io_service,
+      const protocol_type& protocol, const native_handle_type& native_socket)
+    : basic_io_object<SocketService>(io_service)
+  {
+    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_service&) constructor.
+   */
+  basic_socket(basic_socket&& other)
+    : basic_io_object<SocketService>(
+        ASIO_MOVE_CAST(basic_socket)(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_service&) constructor.
+   */
+  basic_socket& operator=(basic_socket&& other)
+  {
+    basic_io_object<SocketService>::operator=(
+        ASIO_MOVE_CAST(basic_socket)(other));
+    return *this;
+  }
+
+  // All sockets have access to each other's implementations.
+  template <typename Protocol1, typename SocketService1>
+  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_service&) constructor.
+   */
+  template <typename Protocol1, typename SocketService1>
+  basic_socket(basic_socket<Protocol1, SocketService1>&& other,
+      typename enable_if<is_convertible<Protocol1, Protocol>::value>::type* = 0)
+    : basic_io_object<SocketService>(other.get_io_service())
+  {
+    this->get_service().template converting_move_construct<Protocol1>(
+        this->get_implementation(), 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_service&) constructor.
+   */
+  template <typename Protocol1, typename SocketService1>
+  typename enable_if<is_convertible<Protocol1, Protocol>::value,
+      basic_socket>::type& operator=(
+        basic_socket<Protocol1, SocketService1>&& other)
+  {
+    basic_socket tmp(ASIO_MOVE_CAST2(basic_socket<
+            Protocol1, SocketService1>)(other));
+    basic_io_object<SocketService>::operator=(
+        ASIO_MOVE_CAST(basic_socket)(tmp));
+    return *this;
+  }
+#endif // defined(ASIO_HAS_MOVE) || defined(GENERATING_DOCUMENTATION)
+
+  /// Get a reference to the lowest layer.
+  /**
+   * This function returns a reference to the lowest layer in a stack of
+   * layers. Since a basic_socket cannot contain any further layers, it simply
+   * returns a reference to itself.
+   *
+   * @return A reference to the lowest layer in the stack of layers. Ownership
+   * is not transferred to the caller.
+   */
+  lowest_layer_type& lowest_layer()
+  {
+    return *this;
+  }
+
+  /// Get a const reference to the lowest layer.
+  /**
+   * This function returns a const reference to the lowest layer in a stack of
+   * layers. Since a basic_socket cannot contain any further layers, it simply
+   * returns a reference to itself.
+   *
+   * @return A const reference to the lowest layer in the stack of layers.
+   * Ownership is not transferred to the caller.
+   */
+  const lowest_layer_type& lowest_layer() const
+  {
+    return *this;
+  }
+
+  /// Open the socket using the specified protocol.
+  /**
+   * This function opens the socket so that it will use the specified protocol.
+   *
+   * @param protocol An object specifying protocol parameters to be used.
+   *
+   * @throws asio::system_error Thrown on failure.
+   *
+   * @par Example
+   * @code
+   * asio::ip::tcp::socket socket(io_service);
+   * 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_service);
+   * asio::error_code ec;
+   * socket.open(asio::ip::tcp::v4(), ec);
+   * if (ec)
+   * {
+   *   // An error occurred.
+   * }
+   * @endcode
+   */
+  asio::error_code open(const protocol_type& protocol,
+      asio::error_code& ec)
+  {
+    return this->get_service().open(this->get_implementation(), protocol, ec);
+  }
+
+  /// Assign an existing native socket to the socket.
+  /*
+   * This function opens the socket to hold an existing native socket.
+   *
+   * @param protocol An object specifying which protocol is to be used.
+   *
+   * @param native_socket A native socket.
+   *
+   * @throws 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::error_code assign(const protocol_type& protocol,
+      const native_handle_type& native_socket, asio::error_code& ec)
+  {
+    return this->get_service().assign(this->get_implementation(),
+        protocol, native_socket, 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_service);
+   * ...
+   * 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::error_code close(asio::error_code& ec)
+  {
+    return this->get_service().close(this->get_implementation(), ec);
+  }
+
+  /// (Deprecated: Use native_handle().) Get the native socket representation.
+  /**
+   * This function may be used to obtain the underlying representation of the
+   * socket. This is intended to allow access to native socket functionality
+   * that is not otherwise provided.
+   */
+  native_type native()
+  {
+    return this->get_service().native_handle(this->get_implementation());
+  }
+
+  /// 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::error_code cancel(asio::error_code& ec)
+  {
+    return this->get_service().cancel(this->get_implementation(), ec);
+  }
+
+  /// Determine whether the socket is at the out-of-band data mark.
+  /**
+   * This function is used to check whether the socket input is currently
+   * positioned at the out-of-band data mark.
+   *
+   * @return A bool indicating whether the socket is at the out-of-band data
+   * mark.
+   *
+   * @throws 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_service);
+   * 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_service);
+   * 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::error_code bind(const endpoint_type& endpoint,
+      asio::error_code& ec)
+  {
+    return this->get_service().bind(this->get_implementation(), endpoint, ec);
+  }
+
+  /// Connect the socket to the specified endpoint.
+  /**
+   * This function is used to connect a socket to the specified remote endpoint.
+   * The function call will block until the connection is successfully made or
+   * an error occurs.
+   *
+   * The socket is automatically opened if it is not already open. If the
+   * connect fails, and the socket was automatically opened, the socket is
+   * not returned to the closed state.
+   *
+   * @param peer_endpoint The remote endpoint to which the socket will be
+   * connected.
+   *
+   * @throws asio::system_error Thrown on failure.
+   *
+   * @par Example
+   * @code
+   * asio::ip::tcp::socket socket(io_service);
+   * 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_service);
+   * 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::error_code connect(const endpoint_type& peer_endpoint,
+      asio::error_code& ec)
+  {
+    if (!is_open())
+    {
+      if (this->get_service().open(this->get_implementation(),
+            peer_endpoint.protocol(), ec))
+      {
+        return ec;
+      }
+    }
+
+    return this->get_service().connect(
+        this->get_implementation(), peer_endpoint, ec);
+  }
+
+  /// Start an asynchronous connect.
+  /**
+   * This function is used to asynchronously connect a socket to the specified
+   * remote endpoint. The function call always returns immediately.
+   *
+   * The socket is automatically opened if it is not already open. If the
+   * connect fails, and the socket was automatically opened, the socket is
+   * not returned to the closed state.
+   *
+   * @param peer_endpoint The remote endpoint to which the socket will be
+   * connected. Copies will be made of the endpoint object as required.
+   *
+   * @param handler The handler to be called when the connection operation
+   * completes. Copies will be made of the handler as required. The function
+   * signature of the handler must be:
+   * @code void handler(
+   *   const 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_service::post().
+   *
+   * @par Example
+   * @code
+   * void connect_handler(const asio::error_code& error)
+   * {
+   *   if (!error)
+   *   {
+   *     // Connect succeeded.
+   *   }
+   * }
+   *
+   * ...
+   *
+   * asio::ip::tcp::socket socket(io_service);
+   * 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();
+      if (this->get_service().open(this->get_implementation(), protocol, ec))
+      {
+        detail::async_result_init<
+          ConnectHandler, void (asio::error_code)> init(
+            ASIO_MOVE_CAST(ConnectHandler)(handler));
+
+        this->get_io_service().post(
+            asio::detail::bind_handler(
+              ASIO_MOVE_CAST(ASIO_HANDLER_TYPE(
+                ConnectHandler, void (asio::error_code)))(
+                  init.handler), ec));
+
+        return init.result.get();
+      }
+    }
+
+    return this->get_service().async_connect(this->get_implementation(),
+        peer_endpoint, ASIO_MOVE_CAST(ConnectHandler)(handler));
+  }
+
+  /// Set an option on the socket.
+  /**
+   * This function is used to set an option on the socket.
+   *
+   * @param option The new option value to be set on the socket.
+   *
+   * @throws 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_service);
+   * ...
+   * 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_service);
+   * ...
+   * 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::error_code set_option(const SettableSocketOption& option,
+      asio::error_code& ec)
+  {
+    return this->get_service().set_option(
+        this->get_implementation(), option, ec);
+  }
+
+  /// Get an option from the socket.
+  /**
+   * This function is used to get the current value of an option on the socket.
+   *
+   * @param option The option value to be obtained from the socket.
+   *
+   * @throws 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_service);
+   * ...
+   * 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_service);
+   * ...
+   * 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::error_code get_option(GettableSocketOption& option,
+      asio::error_code& ec) const
+  {
+    return this->get_service().get_option(
+        this->get_implementation(), option, ec);
+  }
+
+  /// Perform an IO control command on the socket.
+  /**
+   * This function is used to execute an IO control command on the socket.
+   *
+   * @param command The IO control command to be performed on the socket.
+   *
+   * @throws 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_service);
+   * ...
+   * 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_service);
+   * ...
+   * 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::error_code io_control(IoControlCommand& command,
+      asio::error_code& ec)
+  {
+    return this->get_service().io_control(
+        this->get_implementation(), command, 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::error_code non_blocking(
+      bool mode, asio::error_code& ec)
+  {
+    return this->get_service().non_blocking(
+        this->get_implementation(), mode, 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_write_some(asio::null_buffers(), *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_write_some(asio::null_buffers(), 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_write_some(asio::null_buffers(), *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_write_some(asio::null_buffers(), 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_write_some(asio::null_buffers(), *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_write_some(asio::null_buffers(), op);
+   * } @endcode
+   */
+  asio::error_code native_non_blocking(
+      bool mode, asio::error_code& ec)
+  {
+    return this->get_service().native_non_blocking(
+        this->get_implementation(), mode, 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_service);
+   * ...
+   * 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_service);
+   * ...
+   * 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_service);
+   * ...
+   * 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_service);
+   * ...
+   * 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_service);
+   * ...
+   * 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_service);
+   * ...
+   * asio::error_code ec;
+   * socket.shutdown(asio::ip::tcp::socket::shutdown_send, ec);
+   * if (ec)
+   * {
+   *   // An error occurred.
+   * }
+   * @endcode
+   */
+  asio::error_code shutdown(shutdown_type what,
+      asio::error_code& ec)
+  {
+    return this->get_service().shutdown(this->get_implementation(), what, ec);
+  }
+
+protected:
+  /// Protected destructor to prevent deletion through this type.
+  ~basic_socket()
+  {
+  }
+};
+
+} // namespace asio
+
+#include "asio/detail/pop_options.hpp"
+
+#endif // ASIO_BASIC_SOCKET_HPP


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