Add whatsnew for removal of asyncio.loop.create_datagram_endpoint()'s *reuse_address* parameter (#17595)

4 files changed, 37 insertions, 0 deletions

diff --git a/Doc/whatsnew/3.6.rst b/Doc/whatsnew/3.6.rst
index 3f5f5200f1..04c1f7e71d 100644
--- a/Doc/whatsnew/3.6.rst
+++ b/Doc/whatsnew/3.6.rst
@@ -2433,3 +2433,13 @@ In 3.6.7 the :mod:`tokenize` module now implicitly emits a ``NEWLINE`` token
 when provided with input that does not have a trailing new line.  This behavior
 now matches what the C tokenizer does internally.
 (Contributed by Ammar Askar in :issue:`33899`.)
+
+Notable changes in Python 3.6.10
+================================
+
+Due to significant security concerns, the *reuse_address* parameter of
+:meth:`asyncio.loop.create_datagram_endpoint` is no longer supported. This is
+because of the behavior of the socket option ``SO_REUSEADDR`` in UDP. For more
+details, see the documentation for ``loop.create_datagram_endpoint()``.
+(Contributed by Kyle Stanley, Antoine Pitrou, and Yury Selivanov in
+:issue:`37228`.)
diff --git a/Doc/whatsnew/3.7.rst b/Doc/whatsnew/3.7.rst
index 2197bd9739..8a70fe22d5 100644
--- a/Doc/whatsnew/3.7.rst
+++ b/Doc/whatsnew/3.7.rst
@@ -2541,3 +2541,13 @@ This resolves a long standing issue where all virtual environments would have
 to be upgraded or recreated with each Python update. However, note that this
 release will still require recreation of virtual environments in order to get
 the new scripts.
+
+Notable changes in Python 3.7.6
+===============================
+
+Due to significant security concerns, the *reuse_address* parameter of
+:meth:`asyncio.loop.create_datagram_endpoint` is no longer supported. This is
+because of the behavior of the socket option ``SO_REUSEADDR`` in UDP. For more
+details, see the documentation for ``loop.create_datagram_endpoint()``.
+(Contributed by Kyle Stanley, Antoine Pitrou, and Yury Selivanov in
+:issue:`37228`.)
diff --git a/Doc/whatsnew/3.8.rst b/Doc/whatsnew/3.8.rst
index c71c1ab6fd..0927a965dd 100644
--- a/Doc/whatsnew/3.8.rst
+++ b/Doc/whatsnew/3.8.rst
@@ -2204,3 +2204,13 @@ Here's a summary of performance improvements since Python 3.3:
         loop_overhead                    0.3     0.5     0.6     0.4     0.3     0.3
 
     (Measured from the macOS 64-bit builds found at python.org)
+
+Notable changes in Python 3.8.1
+===============================
+
+Due to significant security concerns, the *reuse_address* parameter of
+:meth:`asyncio.loop.create_datagram_endpoint` is no longer supported. This is
+because of the behavior of the socket option ``SO_REUSEADDR`` in UDP. For more
+details, see the documentation for ``loop.create_datagram_endpoint()``.
+(Contributed by Kyle Stanley, Antoine Pitrou, and Yury Selivanov in
+:issue:`37228`.)
diff --git a/Doc/whatsnew/3.9.rst b/Doc/whatsnew/3.9.rst
index 7cf49bfbb9..64361bb17f 100644
--- a/Doc/whatsnew/3.9.rst
+++ b/Doc/whatsnew/3.9.rst
@@ -129,6 +129,13 @@ that would produce an equivalent :class:`ast.AST` object when parsed.
 asyncio
 -------
 
+Due to significant security concerns, the *reuse_address* parameter of
+:meth:`asyncio.loop.create_datagram_endpoint` is no longer supported. This is
+because of the behavior of the socket option ``SO_REUSEADDR`` in UDP. For more
+details, see the documentation for ``loop.create_datagram_endpoint()``.
+(Contributed by Kyle Stanley, Antoine Pitrou, and Yury Selivanov in
+:issue:`37228`.)
+
 Added a new :term:`coroutine` :meth:`~asyncio.loop.shutdown_default_executor`
 that schedules a shutdown for the default executor that waits on the
 :class:`~concurrent.futures.ThreadPoolExecutor` to finish closing. Also,