issue12039 - update the documentation of send_response method in http.server.rst.
diff --git a/Doc/library/http.server.rst b/Doc/library/http.server.rst
index e77e81d..17ea18a 100644
--- a/Doc/library/http.server.rst
+++ b/Doc/library/http.server.rst
@@ -180,10 +180,17 @@
.. method:: send_response(code, message=None)
Adds a response header to the headers buffer and logs the accepted
- request. The HTTP response line is sent, followed by *Server* and
- *Date* headers. The values for these two headers are picked up from
- the :meth:`version_string` and :meth:`date_time_string` methods,
- respectively.
+ request. The HTTP response line is written to the internal buffer,
+ followed by *Server* and *Date* headers. The values for these two headers
+ are picked up from the :meth:`version_string` and
+ :meth:`date_time_string` methods, respectively. If the server does not
+ intend to send any other headers using the :meth:`send_header` method,
+ then send_response should be followed by a :meth:`end_headers` call.
+
+ ..versionchanged:: 3.3
+ Writing of headers to internal buffer and need to call
+ :meth:`end_headers` explicitly.
+
.. method:: send_header(keyword, value)