Swallow 500 errors

webssh/handler.py

@@ -74,10 +74,12 @@ class IndexHandler(MixinHandler, tornado.web.RequestHandler):
         self.result = dict(id=None, status=None, encoding=None)
 
     def write_error(self, status_code, **kwargs):
-        if self.settings.get('serve_traceback') or status_code == 500 or \
-                not swallow_http_errors:
+        if not swallow_http_errors:
             super(MixinHandler, self).write_error(status_code, **kwargs)
         else:
+            if status_code == 500:
+                self._reason = 'Internal Server Error'
+            else:
                 exc_info = kwargs.get('exc_info')
                 if exc_info:
                     self._reason = exc_info[1].log_message