http/bench: Handle keep-alive properly

Author: 1st1

servers/asyncio_http_server.py

@@ -108,6 +108,8 @@ def handle(self, request, response):
             resp = b'X' * payload_size
             _RESP_CACHE[payload_size] = resp
         response.write(resp)
+        if not self._current_parser.should_keep_alive():
+            self._transport.close()
         self._current_parser = None
         self._current_request = None