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-rw-r--r--Doc/library/http.server.rst7
1 files changed, 4 insertions, 3 deletions
diff --git a/Doc/library/http.server.rst b/Doc/library/http.server.rst
index d9539f773a..e77e81d49d 100644
--- a/Doc/library/http.server.rst
+++ b/Doc/library/http.server.rst
@@ -188,9 +188,10 @@ of which this module provides three different variants:
.. method:: send_header(keyword, value)
Adds the HTTP header to an internal buffer which will be written to the
- output stream when either :meth:`end_headers` or :meth:`flush_headers`
- is invoked. *keyword* should specify the header keyword, with *value*
- specifying its value.
+ output stream when either :meth:`end_headers` or :meth:`flush_headers` is
+ invoked. *keyword* should specify the header keyword, with *value*
+ specifying its value. Note that, after the send_header calls are done,
+ :meth:`end_headers` MUST BE called in order to complete the operation.
.. versionchanged:: 3.2 Storing the headers in an internal buffer