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diff --git a/lib/asio/local/connect_pair.hpp b/lib/asio/local/connect_pair.hpp
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+//
+// local/connect_pair.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_LOCAL_CONNECT_PAIR_HPP
+#define ASIO_LOCAL_CONNECT_PAIR_HPP
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1200)
+# pragma once
+#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
+
+#include "asio/detail/config.hpp"
+
+#if defined(ASIO_HAS_LOCAL_SOCKETS) \
+ || defined(GENERATING_DOCUMENTATION)
+
+#include "asio/basic_socket.hpp"
+#include "asio/detail/socket_ops.hpp"
+#include "asio/detail/throw_error.hpp"
+#include "asio/error.hpp"
+#include "asio/local/basic_endpoint.hpp"
+
+#include "asio/detail/push_options.hpp"
+
+namespace asio {
+namespace local {
+
+/// Create a pair of connected sockets.
+template <typename Protocol ASIO_SVC_TPARAM ASIO_SVC_TPARAM1>
+void connect_pair(
+ basic_socket<Protocol ASIO_SVC_TARG>& socket1,
+ basic_socket<Protocol ASIO_SVC_TARG1>& socket2);
+
+/// Create a pair of connected sockets.
+template <typename Protocol ASIO_SVC_TPARAM ASIO_SVC_TPARAM1>
+ASIO_SYNC_OP_VOID connect_pair(
+ basic_socket<Protocol ASIO_SVC_TARG>& socket1,
+ basic_socket<Protocol ASIO_SVC_TARG1>& socket2,
+ asio::error_code& ec);
+
+template <typename Protocol ASIO_SVC_TPARAM ASIO_SVC_TPARAM1>
+inline void connect_pair(
+ basic_socket<Protocol ASIO_SVC_TARG>& socket1,
+ basic_socket<Protocol ASIO_SVC_TARG1>& socket2)
+{
+ asio::error_code ec;
+ connect_pair(socket1, socket2, ec);
+ asio::detail::throw_error(ec, "connect_pair");
+}
+
+template <typename Protocol ASIO_SVC_TPARAM ASIO_SVC_TPARAM1>
+inline ASIO_SYNC_OP_VOID connect_pair(
+ basic_socket<Protocol ASIO_SVC_TARG>& socket1,
+ basic_socket<Protocol ASIO_SVC_TARG1>& socket2,
+ asio::error_code& ec)
+{
+ // Check that this function is only being used with a UNIX domain socket.
+ asio::local::basic_endpoint<Protocol>* tmp
+ = static_cast<typename Protocol::endpoint*>(0);
+ (void)tmp;
+
+ Protocol protocol;
+ asio::detail::socket_type sv[2];
+ if (asio::detail::socket_ops::socketpair(protocol.family(),
+ protocol.type(), protocol.protocol(), sv, ec)
+ == asio::detail::socket_error_retval)
+ ASIO_SYNC_OP_VOID_RETURN(ec);
+
+ socket1.assign(protocol, sv[0], ec);
+ if (ec)
+ {
+ asio::error_code temp_ec;
+ asio::detail::socket_ops::state_type state[2] = { 0, 0 };
+ asio::detail::socket_ops::close(sv[0], state[0], true, temp_ec);
+ asio::detail::socket_ops::close(sv[1], state[1], true, temp_ec);
+ ASIO_SYNC_OP_VOID_RETURN(ec);
+ }
+
+ socket2.assign(protocol, sv[1], ec);
+ if (ec)
+ {
+ asio::error_code temp_ec;
+ socket1.close(temp_ec);
+ asio::detail::socket_ops::state_type state = 0;
+ asio::detail::socket_ops::close(sv[1], state, true, temp_ec);
+ ASIO_SYNC_OP_VOID_RETURN(ec);
+ }
+
+ ASIO_SYNC_OP_VOID_RETURN(ec);
+}
+
+} // namespace local
+} // namespace asio
+
+#include "asio/detail/pop_options.hpp"
+
+#endif // defined(ASIO_HAS_LOCAL_SOCKETS)
+ // || defined(GENERATING_DOCUMENTATION)
+
+#endif // ASIO_LOCAL_CONNECT_PAIR_HPP