Add teardown_role for correct TIME_WAIT behavior (API Change):

* teardown_tag is replaced with teardown_role, a client/server
  flag used to determine whether the shutdown is performed
  before or after reading the EOF. This is in accordance with
  RFC6455 7.1.1:

  https://tools.ietf.org/html/rfc6455#section-7.1.1

Actions Required:

* Modify signatures of teardown and async_teardown to use
  teardown_role instead of teardown_tag

* Change calls to teardown and async_teardown to pass the
  correct role: client or server depending on context.

CHANGELOG.md

@@ -23,6 +23,8 @@ API Changes:
 
 * drain_buffer is removed
 
+* role_type replaces teardown_tag
+
 Actions Required:
 
 * Remove calling code which drains the connection after
@@ -32,6 +34,12 @@ Actions Required:
   it is no longer necessary to manually drain the connection
   after closing.
 
+* Modify signatures of teardown and async_teardown to use
+  role_type instead of teardown_tag
+
+* Change calls to teardown and async_teardown to pass the
+  correct role_type, client or server, depending on context.
+
 --------------------------------------------------------------------------------
 
 Version 99:

doc/qbk/quickref.xml

@@ -147,6 +147,7 @@
             <member><link linkend="beast.ref.boost__beast__websocket__close_code">close_code</link></member>
             <member><link linkend="beast.ref.boost__beast__websocket__error">error</link></member>
             <member><link linkend="beast.ref.boost__beast__websocket__frame_type">frame_type</link></member>
+            <member><link linkend="beast.ref.boost__beast__websocket__role_type">role_type</link></member>
           </simplelist>
         </entry>
       </row>

example/common/ssl_stream.hpp

@@ -294,14 +294,14 @@ public:
     template<class SyncStream>
     friend
     void
-    teardown(boost::beast::websocket::teardown_tag,
+    teardown(boost::beast::websocket::role_type,
         ssl_stream<SyncStream>& stream,
             boost::system::error_code& ec);
 
     template<class AsyncStream, class TeardownHandler>
     friend
     void
-    async_teardown(boost::beast::websocket::teardown_tag,
+    async_teardown(boost::beast::websocket::role_type,
         ssl_stream<AsyncStream>& stream, TeardownHandler&& handler);
 };
 
@@ -312,24 +312,27 @@ public:
 template<class SyncStream>
 inline
 void
-teardown(boost::beast::websocket::teardown_tag,
+teardown(
+    boost::beast::websocket::role_type role,
     ssl_stream<SyncStream>& stream,
-        boost::system::error_code& ec)
+    boost::system::error_code& ec)
 {
     // Just forward it to the wrapped ssl::stream
     using boost::beast::websocket::teardown;
-    teardown(boost::beast::websocket::teardown_tag{}, *stream.p_, ec);
+    teardown(role, *stream.p_, ec);
 }
 
 template<class AsyncStream, class TeardownHandler>
 inline
 void
-async_teardown(boost::beast::websocket::teardown_tag,
+async_teardown(
-    ssl_stream<AsyncStream>& stream, TeardownHandler&& handler)
+    boost::beast::websocket::role_type role,
+    ssl_stream<AsyncStream>& stream,
+    TeardownHandler&& handler)
 {
     // Just forward it to the wrapped ssl::stream
     using boost::beast::websocket::async_teardown;
-    async_teardown(boost::beast::websocket::teardown_tag{},
+    async_teardown(role,
         *stream.p_, std::forward<TeardownHandler>(handler));
 }
 

include/boost/beast/websocket/impl/fail.ipp

@@ -180,7 +180,8 @@ operator()(error_code ec, std::size_t)
     go_teardown:
         BOOST_ASSERT(ws_.wr_block_ == tok_);
         step_ = do_teardown + 1;
-        websocket_helpers::call_async_teardown(
+        using beast::websocket::async_teardown;
+        async_teardown(ws_.role_,
             ws_.stream_, std::move(*this));
         return;
 
@@ -234,7 +235,8 @@ do_fail(
         if(failed_)
             return;
     }
-    websocket_helpers::call_teardown(stream_, ec);
+    using beast::websocket::teardown;
+    teardown(role_, stream_, ec);
     if(ec == boost::asio::error::eof)
     {
         // Rationale:

include/boost/beast/websocket/impl/ssl.ipp

@@ -33,20 +33,25 @@ Behavior of ssl::stream regarding close_
 
 template<class AsyncStream>
 void
-teardown(teardown_tag,
+teardown(
+    role_type,
     boost::asio::ssl::stream<AsyncStream>& stream,
-        error_code& ec)
+    error_code& ec)
 {
     stream.shutdown(ec);
 }
 
-template<class AsyncStream, class TeardownHandler>
+template<
+    class AsyncStream,
+    class TeardownHandler>
 void
-async_teardown(teardown_tag,
+async_teardown(
+    role_type,
     boost::asio::ssl::stream<AsyncStream>& stream,
-        TeardownHandler&& handler)
+    TeardownHandler&& handler)
 {
-    stream.async_shutdown(std::forward<TeardownHandler>(handler));
+    stream.async_shutdown(
+        std::forward<TeardownHandler>(handler));
 }
 
 } // websocket

include/boost/beast/websocket/impl/teardown.ipp

@@ -10,8 +10,7 @@
 #ifndef BOOST_BEAST_WEBSOCKET_IMPL_TEARDOWN_IPP
 #define BOOST_BEAST_WEBSOCKET_IMPL_TEARDOWN_IPP
 
-#include <boost/beast/core/async_result.hpp>
+#include <boost/beast/core/bind_handler.hpp>
-#include <boost/beast/core/handler_ptr.hpp>
 #include <boost/beast/core/type_traits.hpp>
 #include <boost/asio/handler_alloc_hook.hpp>
 #include <boost/asio/handler_continuation_hook.hpp>
@@ -30,35 +29,30 @@ class teardown_tcp_op
     using socket_type =
         boost::asio::ip::tcp::socket;
 
-    struct data
+    Handler h_;
-    {
+    socket_type& s_;
-        bool cont;
+    role_type role_;
-        socket_type& socket;
+    int step_ = 0;
-        char buf[2048];
-        int state = 0;
-
-        data(Handler& handler, socket_type& socket_)
-            : socket(socket_)
-        {
-            using boost::asio::asio_handler_is_continuation;
-            cont = asio_handler_is_continuation(std::addressof(handler));
-        }
-    };
-
-    handler_ptr<data, Handler> d_;
 
 public:
+    teardown_tcp_op(teardown_tcp_op&& other) = default;
+    teardown_tcp_op(teardown_tcp_op const& other) = default;
+
     template<class DeducedHandler>
     teardown_tcp_op(
         DeducedHandler&& h,
-            socket_type& socket)
+        socket_type& s,
-        : d_(std::forward<DeducedHandler>(h), socket)
+        role_type role)
+        : h_(std::forward<DeducedHandler>(h))
+        , s_(s)
+        , role_(role)
     {
-        (*this)(error_code{}, 0, false);
     }
 
     void
-    operator()(error_code ec, std::size_t, bool again = true);
+    operator()(
+        error_code ec = {},
+        std::size_t bytes_transferred = 0);
 
     friend
     void* asio_handler_allocate(std::size_t size,
@@ -66,7 +60,7 @@ public:
     {
         using boost::asio::asio_handler_allocate;
         return asio_handler_allocate(
-            size, std::addressof(op->d_.handler()));
+            size, std::addressof(op->h_));
     }
 
     friend
@@ -75,13 +69,15 @@ public:
     {
         using boost::asio::asio_handler_deallocate;
         asio_handler_deallocate(
-            p, size, std::addressof(op->d_.handler()));
+            p, size, std::addressof(op->h_));
     }
 
     friend
     bool asio_handler_is_continuation(teardown_tcp_op* op)
     {
-        return op->d_->cont;
+        using boost::asio::asio_handler_is_continuation;
+        return op->step_ >= 3 ||
+            asio_handler_is_continuation(std::addressof(op->h_));
     }
 
     template<class Function>
@@ -91,40 +87,58 @@ public:
     {
         using boost::asio::asio_handler_invoke;
         asio_handler_invoke(
-            f, std::addressof(op->d_.handler()));
+            f, std::addressof(op->h_));
     }
 };
 
 template<class Handler>
 void
 teardown_tcp_op<Handler>::
-operator()(error_code ec, std::size_t, bool again)
+operator()(error_code ec, std::size_t)
 {
     using boost::asio::buffer;
-    auto& d = *d_;
+    using tcp = boost::asio::ip::tcp;
-    d.cont = d.cont || again;
+    switch(step_)
-    while(! ec)
     {
-        switch(d.state)
+    case 0:
+        s_.non_blocking(true, ec);
+        if(ec)
         {
-        case 0:
+            step_ = 1;
-            d.state = 1;
+            return s_.get_io_service().post(
-            d.socket.shutdown(
+                bind_handler(std::move(*this), ec, 0));
-                boost::asio::ip::tcp::socket::shutdown_send, ec);
-            break;
-
-        case 1:
-            d.socket.async_read_some(
-                buffer(d.buf), std::move(*this));
-            return;
         }
+        step_ = 2;
+        if(role_ == role_type::server)
+            s_.shutdown(tcp::socket::shutdown_send, ec);
+        goto do_read;
+
+    case 1:
+        break;
+
+    case 2:
+        step_ = 3;
+
+    case 3:
+        if(ec != boost::asio::error::would_block)
+            break;
+        {
+            char buf[2048];
+            s_.read_some(
+                boost::asio::buffer(buf), ec);
+            if(ec)
+                break;
+        }
+
+    do_read:
+        return s_.async_read_some(
+            boost::asio::null_buffers{},
+                std::move(*this));
     }
-    if(ec == boost::asio::error::eof)
+    if(role_ == role_type::client)
-    {
+        s_.shutdown(tcp::socket::shutdown_send, ec);
-        d.socket.close(ec);
+    s_.close(ec);
-        ec = error_code{};
+    h_(ec);
-    }
-    d_.invoke(ec);
 }
 
 } // detail
@@ -133,13 +147,15 @@ operator()(error_code ec, std::size_t, bool again)
 
 inline
 void
-teardown(teardown_tag,
+teardown(
+    role_type role,
     boost::asio::ip::tcp::socket& socket,
-        error_code& ec)
+    error_code& ec)
 {
     using boost::asio::buffer;
-    socket.shutdown(
+    if(role == role_type::server)
-        boost::asio::ip::tcp::socket::shutdown_send, ec);
+        socket.shutdown(
+            boost::asio::ip::tcp::socket::shutdown_send, ec);
     while(! ec)
     {
         char buf[8192];
@@ -148,24 +164,27 @@ teardown(teardown_tag,
         if(! n)
             break;
     }
-    if(ec == boost::asio::error::eof)
+    if(role == role_type::client)
-        ec = error_code{};
+        socket.shutdown(
+            boost::asio::ip::tcp::socket::shutdown_send, ec);
     socket.close(ec);
 }
 
 template<class TeardownHandler>
 inline
 void
-async_teardown(teardown_tag,
+async_teardown(
+    role_type role,
     boost::asio::ip::tcp::socket& socket,
-        TeardownHandler&& handler)
+    TeardownHandler&& handler)
 {
     static_assert(beast::is_completion_handler<
         TeardownHandler, void(error_code)>::value,
             "TeardownHandler requirements not met");
     detail::teardown_tcp_op<typename std::decay<
         TeardownHandler>::type>{std::forward<
-            TeardownHandler>(handler), socket};
+            TeardownHandler>(handler), socket,
+                role}();
 }
 
 } // websocket

include/boost/beast/websocket/role.hpp

@@ -0,0 +1,59 @@
+//
+// Copyright (c) 2016-2017 Vinnie Falco (vinnie dot falco at gmail 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)
+//
+// Official repository: https://github.com/boostorg/beast
+//
+
+#ifndef BOOST_BEAST_WEBSOCKET_ROLE_HPP
+#define BOOST_BEAST_WEBSOCKET_ROLE_HPP
+
+#include <boost/beast/config.hpp>
+
+namespace boost {
+namespace beast {
+namespace websocket {
+
+/** The role of the websocket stream endpoint.
+
+    Whether the endpoint is a client or server affects the
+    behavior of the <em>Close the WebSocket Connection</em>
+    operation described in rfc6455 section 7.1.1.
+    The shutdown behavior depends on the type of the next
+    layer template parameter used to construct the @ref stream.
+    Other next layer types including user-defined types
+    may implement different role-based behavior when
+    performing the close operation.
+    
+    The default implementation for @ref stream when the next
+    layer type is a `boost::asio::ip::tcp::socket` behaves
+    as follows:
+
+    @li In the client role, a TCP/IP shutdown is sent after
+    reading all remaining data on the connection.
+
+    @li In the server role, a TCP/IP shutdown is sent before
+    reading all remaining data on the connection.
+
+    When the next layer type is a `boost::asio::ssl::stream`,
+    the connection is closed by performing the SSL closing
+    handshake corresponding to the role type, client or server.
+
+    @see https://tools.ietf.org/html/rfc6455#section-7.1.1
+*/
+enum class role_type
+{
+    /// The stream is operating as a client.
+    client,
+
+    /// The stream is operating as a server.
+    server
+};
+
+} // websocket
+} // beast
+} // boost
+
+#endif

include/boost/beast/websocket/ssl.hpp

@@ -28,15 +28,18 @@ namespace websocket {
     `boost::asio::ssl::stream`, callers are responsible for
     providing a suitable overload of this function.
 
+    @param role The role of the local endpoint
+
     @param stream The stream to tear down.
 
     @param ec Set to the error if any occurred.
 */
 template<class SyncStream>
 void
-teardown(teardown_tag,
+teardown(
+    role_type role,
     boost::asio::ssl::stream<SyncStream>& stream,
-        error_code& ec);
+    error_code& ec);
 
 /** Start tearing down a `boost::asio::ssl::stream`.
 
@@ -48,6 +51,8 @@ teardown(teardown_tag,
     callers are responsible for providing a suitable overload
     of this function.
 
+    @param role The role of the local endpoint
+
     @param stream The stream to tear down.
 
     @param handler The handler to be called when the request completes.
@@ -65,9 +70,10 @@ teardown(teardown_tag,
 template<class AsyncStream, class TeardownHandler>
 inline
 void
-async_teardown(teardown_tag,
+async_teardown(
+    role_type role,
     boost::asio::ssl::stream<AsyncStream>& stream,
-        TeardownHandler&& handler);
+    TeardownHandler&& handler);
 
 } // websocket
 } // beast

include/boost/beast/websocket/stream.hpp

@@ -13,6 +13,7 @@
 #include <boost/beast/config.hpp>
 #include <boost/beast/websocket/error.hpp>
 #include <boost/beast/websocket/option.hpp>
+#include <boost/beast/websocket/role.hpp>
 #include <boost/beast/websocket/rfc6455.hpp>
 #include <boost/beast/websocket/detail/frame.hpp>
 #include <boost/beast/websocket/detail/hybi13.hpp>
@@ -145,16 +146,6 @@ class stream
     using control_cb_type =
         std::function<void(frame_type, string_view)>;
 
-    /// Identifies the role of a WebSockets stream.
-    enum class role_type
-    {
-        /// Stream is operating as a client.
-        client,
-
-        /// Stream is operating as a server.
-        server
-    };
-
     // State information for the message being received
     //
     struct rd_t

include/boost/beast/websocket/teardown.hpp

@@ -11,7 +11,8 @@
 #define BOOST_BEAST_WEBSOCKET_TEARDOWN_HPP
 
 #include <boost/beast/config.hpp>
-#include <boost/beast/websocket/error.hpp>
+#include <boost/beast/core/error.hpp>
+#include <boost/beast/websocket/role.hpp>
 #include <boost/asio/ip/tcp.hpp>
 #include <type_traits>
 
@@ -19,15 +20,6 @@ namespace boost {
 namespace beast {
 namespace websocket {
 
-/** Tag type used to find @ref beast::websocket::teardown and @ref beast::websocket::async_teardown overloads
-
-    Overloads of @ref beast::websocket::teardown and
-    @ref beast::websocket::async_teardown for user defined types
-    must take a value of type @ref teardown_tag in the first
-    argument in order to be found by the implementation.
-*/
-struct teardown_tag {};
-
 /** Tear down a connection.
 
     This tears down a connection. The implementation will call
@@ -37,13 +29,18 @@ struct teardown_tag {};
     `boost::asio::ssl::stream`, callers are responsible for
     providing a suitable overload of this function.
 
+    @param role The role of the local endpoint
+
     @param socket The socket to tear down.
 
     @param ec Set to the error if any occurred.
 */
 template<class Socket>
 void
-teardown(teardown_tag, Socket& socket, error_code& ec)
+teardown(
+    role_type role,
+    Socket& socket,
+    error_code& ec)
 {
 /*
     If you are trying to use OpenSSL and this goes off, you need to
@@ -51,7 +48,7 @@ teardown(teardown_tag, Socket& socket, error_code& ec)
 
     If you are creating an instance of beast::websocket::stream with your
     own user defined type, you must provide an overload of teardown with
-    the corresponding signature (including the teardown_tag).
+    the corresponding signature (including the role_type).
 */
     static_assert(sizeof(Socket)==-1,
         "Unknown Socket type in teardown.");
@@ -67,6 +64,8 @@ teardown(teardown_tag, Socket& socket, error_code& ec)
     callers are responsible for providing a suitable overload
     of this function.
 
+    @param role The role of the local endpoint
+
     @param socket The socket to tear down.
 
     @param handler The handler to be called when the request completes.
@@ -82,9 +81,14 @@ teardown(teardown_tag, Socket& socket, error_code& ec)
     manner equivalent to using boost::asio::io_service::post().
 
 */
-template<class Socket, class TeardownHandler>
+template<
+    class Socket,
+    class TeardownHandler>
 void
-async_teardown(teardown_tag, Socket& socket, TeardownHandler&& handler)
+async_teardown(
+    role_type role,
+    Socket& socket,
+    TeardownHandler&& handler)
 {
 /*
     If you are trying to use OpenSSL and this goes off, you need to
@@ -92,7 +96,7 @@ async_teardown(teardown_tag, Socket& socket, TeardownHandler&& handler)
 
     If you are creating an instance of beast::websocket::stream with your
     own user defined type, you must provide an overload of teardown with
-    the corresponding signature (including the teardown_tag).
+    the corresponding signature (including the role_type).
 */
     static_assert(sizeof(Socket)==-1,
         "Unknown Socket type in async_teardown.");
@@ -102,36 +106,6 @@ async_teardown(teardown_tag, Socket& socket, TeardownHandler&& handler)
 
 //------------------------------------------------------------------------------
 
-namespace websocket_helpers {
-
-// Calls to teardown and async_teardown must be made from
-// a namespace that does not contain any overloads of these
-// functions. The websocket_helpers namespace is defined here
-// for that purpose.
-
-template<class Socket>
-inline
-void
-call_teardown(Socket& socket, error_code& ec)
-{
-    using websocket::teardown;
-    teardown(websocket::teardown_tag{}, socket, ec);
-}
-
-template<class Socket, class TeardownHandler>
-inline
-void
-call_async_teardown(Socket& socket, TeardownHandler&& handler)
-{
-    using websocket::async_teardown;
-    async_teardown(websocket::teardown_tag{}, socket,
-        std::forward<TeardownHandler>(handler));
-}
-
-} // websocket_helpers
-
-//------------------------------------------------------------------------------
-
 namespace websocket {
 
 /** Tear down a `boost::asio::ip::tcp::socket`.
@@ -143,13 +117,17 @@ namespace websocket {
     `boost::asio::ssl::stream`, callers are responsible for
     providing a suitable overload of this function.
 
+    @param role The role of the local endpoint
+
     @param socket The socket to tear down.
 
     @param ec Set to the error if any occurred.
 */
 void
-teardown(teardown_tag,
+teardown(
-    boost::asio::ip::tcp::socket& socket, error_code& ec);
+    role_type role,
+    boost::asio::ip::tcp::socket& socket,
+    error_code& ec);
 
 /** Start tearing down a `boost::asio::ip::tcp::socket`.
 
@@ -161,6 +139,8 @@ teardown(teardown_tag,
     callers are responsible for providing a suitable overload
     of this function.
 
+    @param role The role of the local endpoint
+
     @param socket The socket to tear down.
 
     @param handler The handler to be called when the request completes.
@@ -178,8 +158,10 @@ teardown(teardown_tag,
 */
 template<class TeardownHandler>
 void
-async_teardown(teardown_tag,
+async_teardown(
-    boost::asio::ip::tcp::socket& socket, TeardownHandler&& handler);
+    role_type role,
+    boost::asio::ip::tcp::socket& socket,
+    TeardownHandler&& handler);
 
 } // websocket
 } // beast

test/beast/websocket/CMakeLists.txt

@@ -21,6 +21,7 @@ add_executable (tests-beast-websocket
     error.cpp
     option.cpp
     rfc6455.cpp
+    role.cpp
     stream.cpp
     teardown.cpp
     frame.cpp

test/beast/websocket/Jamfile

@@ -15,6 +15,7 @@ local SOURCES =
     teardown.cpp
     frame.cpp
     mask.cpp
+    role.cpp
     utf8_checker.cpp
     ;
 

test/beast/websocket/role.cpp

@@ -0,0 +1,11 @@
+//
+// Copyright (c) 2016-2017 Vinnie Falco (vinnie dot falco at gmail 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)
+//
+// Official repository: https://github.com/boostorg/beast
+//
+
+// Test that header file is self-contained.
+#include <boost/beast/websocket/role.hpp>

test/extras/include/boost/beast/test/fail_stream.hpp

@@ -161,21 +161,24 @@ public:
 
     friend
     void
-    teardown(websocket::teardown_tag,
+    teardown(
+        websocket::role_type role,
         fail_stream<NextLayer>& stream,
-            boost::system::error_code& ec)
+        boost::system::error_code& ec)
     {
         if(stream.pfc_->fail(ec))
             return;
-        beast::websocket_helpers::call_teardown(stream.next_layer(), ec);
+        using beast::websocket::teardown;
+        teardown(role, stream.next_layer(), ec);
     }
 
     template<class TeardownHandler>
     friend
     void
-    async_teardown(websocket::teardown_tag,
+    async_teardown(
+        websocket::role_type role,
         fail_stream<NextLayer>& stream,
-            TeardownHandler&& handler)
+        TeardownHandler&& handler)
     {
         error_code ec;
         if(stream.pfc_->fail(ec))
@@ -184,8 +187,9 @@ public:
                 bind_handler(std::move(handler), ec));
             return;
         }
-        beast::websocket_helpers::call_async_teardown(
+        using beast::websocket::async_teardown;
-            stream.next_layer(), std::forward<TeardownHandler>(handler));
+        async_teardown(role, stream.next_layer(),
+            std::forward<TeardownHandler>(handler));
     }
 };
 

test/extras/include/boost/beast/test/pipe_stream.hpp

@@ -197,13 +197,15 @@ public:
 
         friend
         void
-        teardown(websocket::teardown_tag,
+        teardown(
+            websocket::role_type role,
             stream& s, boost::system::error_code& ec);
 
         template<class TeardownHandler>
         friend
         void
-        async_teardown(websocket::teardown_tag,
+        async_teardown(
+            websocket::role_type,
             stream& s, TeardownHandler&& handler);
     };
 
@@ -229,8 +231,10 @@ public:
 
 inline
 void
-teardown(websocket::teardown_tag,
+teardown(
-    pipe::stream& s, boost::system::error_code& ec)
+    websocket::role_type,
+    pipe::stream& s,
+    boost::system::error_code& ec)
 {
     if(s.fc_)
     {
@@ -247,7 +251,7 @@ teardown(websocket::teardown_tag,
 template<class TeardownHandler>
 inline
 void
-async_teardown(websocket::teardown_tag,
+async_teardown(websocket::role_type,
     pipe::stream& s, TeardownHandler&& handler)
 {
     error_code ec;

test/extras/include/boost/beast/test/stream.hpp

@@ -440,13 +440,13 @@ public:
 
     friend
     void
-    teardown(websocket::teardown_tag,
+    teardown(websocket::role_type,
         stream& s, boost::system::error_code& ec);
 
     template<class TeardownHandler>
     friend
     void
-    async_teardown(websocket::teardown_tag,
+    async_teardown(websocket::role_type role,
         stream& s, TeardownHandler&& handler);
 };
 
@@ -654,7 +654,7 @@ async_write_some(ConstBufferSequence const& buffers,
 
 inline
 void
-teardown(websocket::teardown_tag,
+teardown(websocket::role_type,
     stream& s, boost::system::error_code& ec)
 {
     if(s.in_.fc)
@@ -672,7 +672,7 @@ teardown(websocket::teardown_tag,
 template<class TeardownHandler>
 inline
 void
-async_teardown(websocket::teardown_tag,
+async_teardown(websocket::role_type,
     stream& s, TeardownHandler&& handler)
 {
     error_code ec;

test/extras/include/boost/beast/test/string_iostream.hpp

@@ -150,7 +150,7 @@ public:
 
     friend
     void
-    teardown(websocket::teardown_tag,
+    teardown(websocket::role_type,
         string_iostream&,
             boost::system::error_code& ec)
     {
@@ -160,7 +160,7 @@ public:
     template<class TeardownHandler>
     friend
     void
-    async_teardown(websocket::teardown_tag,
+    async_teardown(websocket::role_type,
         string_iostream& stream,
             TeardownHandler&& handler)
     {

test/extras/include/boost/beast/test/string_istream.hpp

@@ -138,7 +138,7 @@ public:
 
     friend
     void
-    teardown(websocket::teardown_tag,
+    teardown(websocket::role_type,
         string_istream&,
             boost::system::error_code& ec)
     {
@@ -148,7 +148,7 @@ public:
     template<class TeardownHandler>
     friend
     void
-    async_teardown(websocket::teardown_tag,
+    async_teardown(websocket::role_type,
         string_istream& stream,
             TeardownHandler&& handler)
     {

test/extras/include/boost/beast/test/string_ostream.hpp

@@ -126,7 +126,7 @@ public:
 
     friend
     void
-    teardown(websocket::teardown_tag,
+    teardown(websocket::role_type,
         string_ostream&,
             boost::system::error_code& ec)
     {
@@ -136,7 +136,7 @@ public:
     template<class TeardownHandler>
     friend
     void
-    async_teardown(websocket::teardown_tag,
+    async_teardown(websocket::role_type,
         string_ostream& stream,
             TeardownHandler&& handler)
     {