Fixing channel_ws hiding warnings.

Author: evoskuil

include/bitcoin/node/channels/channel_ws.hpp

@@ -47,7 +47,7 @@ class BCN_API channel_ws
 
     /// Serialize and write websocket message to peer (requires strand).
     /// Completion handler is always invoked on the channel strand.
-    inline void send(system::data_chunk&& message, bool binary,
+    inline virtual void send(system::data_chunk&& message, bool binary,
         network::result_handler&& handler) NOEXCEPT
     {
         BC_ASSERT(stranded());
@@ -81,6 +81,10 @@ class BCN_API channel_ws
     }
 
 protected:
+    /// Bring virtual base methods into scope to prevent hiding.
+    using network::channel_http::send;
+    using network::channel_http::handle_send;
+
     /// Dispatch websocket buffer via derived handlers (override to handle).
     /// Override to handle dispatch, must invoke read_request() on complete.
     inline void dispatch_ws(const network::http::flat_buffer&,