better websocket error handling

lib/landline/extensions/websocket.rb

@@ -125,6 +125,10 @@ module Landline
           type: type
         )
         @io.write(frame.to_s)
+      rescue Errno::EPIPE => e
+        @writable = false
+        _emit :error, e
+        close
       end
 
       # Read data from socket synchronously
@@ -219,6 +223,10 @@ module Landline
           frame = @frame_parser.next
           return frame if frame
         end
+      rescue Errno::ECONNRESET => e
+        @writable = false
+        _emit :error, e
+        close
       end
 
       # Close the websocket