Gracefully shutdown Websocket and TLS streams

Summary:
Resolves #18
Ref T15241

Reviewers: ivica

Reviewed By: ivica

Subscribers: korina, miljen

Maniphest Tasks: T15241

Differential Revision: https://repo.mireo.local/D33395

test/include/test_common/test_autoconnect_stream.hpp

@@ -95,7 +95,6 @@ public:
 
     void close() {
         error_code ec;
-        detail::lowest_layer(*_stream_ptr).shutdown(asio::ip::tcp::socket::shutdown_both, ec);
         detail::lowest_layer(*_stream_ptr).close(ec);
     }
 

test/include/test_common/test_broker.hpp

@@ -224,6 +224,7 @@ public:
         auto initiation = [this](
             auto handler, const MutableBuffer& buffer
         ) {
+            _pending_read.complete(_ex, asio::error::operation_aborted, 0);
             _pending_read = pending_read(buffer, std::move(handler));
             complete_read();
         };

test/include/test_common/test_stream.hpp

@@ -79,10 +79,6 @@ public:
         _test_broker = nullptr;
     }
 
-    void shutdown(asio::ip::tcp::socket::shutdown_type, error_code& ec) {
-        ec = {};
-    }
-
     void connect(const endpoint_type& ep, error_code& ec) {
         ec = {};
         _remote_ep = ep;
@@ -165,8 +161,6 @@ public:
     }
 
     void operator()(on_read, error_code ec, size_t bytes_read) {
-        if (ec)
-            _stream_impl->disconnect();
         complete(ec, bytes_read);
     }
 
@@ -223,8 +217,6 @@ public:
     }
 
     void operator()(on_write, error_code ec, size_t bytes_written) {
-        if (ec)
-            _stream_impl->disconnect();
         complete(ec, bytes_written);
     }
 
@@ -300,10 +292,6 @@ public:
         return _impl->is_connected();
     }
 
-    void shutdown(asio::ip::tcp::socket::shutdown_type st, error_code& ec) {
-        return _impl->shutdown(st, ec);
-    }
-
     endpoint_type remote_endpoint(error_code& ec) {
         return _impl->remote_endpoint(ec);
     }
@@ -368,6 +356,10 @@ public:
 
 };
 
+template <typename ShutdownHandler>
+void async_shutdown(test_stream&, ShutdownHandler&& handler) {
+    return std::move(handler)(error_code {});
+}
 
 } // end namespace boost::mqtt5::test