bpo-39259: nntplib.NNTP/NNTP_SSL now reject timeout = 0 (GH-17936)
nntplib.NNTP and nntplib.NNTP_SSL now raise a ValueError
if the given timeout for their constructor is zero to
prevent the creation of a non-blocking socket.
diff --git a/Doc/library/nntplib.rst b/Doc/library/nntplib.rst
index e8480b5..7697365 100644
--- a/Doc/library/nntplib.rst
+++ b/Doc/library/nntplib.rst
@@ -93,6 +93,10 @@
.. versionchanged:: 3.3
Support for the :keyword:`with` statement was added.
+ .. versionchanged:: 3.9
+ If the *timeout* parameter is set to be zero, it will raise a
+ :class:`ValueError` to prevent the creation of a non-blocking socket.
+
.. class:: NNTP_SSL(host, port=563, user=None, password=None, ssl_context=None, readermode=None, usenetrc=False, [timeout])
Return a new :class:`NNTP_SSL` object, representing an encrypted
@@ -122,6 +126,10 @@
:attr:`ssl.SSLContext.check_hostname` and *Server Name Indication* (see
:data:`ssl.HAS_SNI`).
+ .. versionchanged:: 3.9
+ If the *timeout* parameter is set to be zero, it will raise a
+ :class:`ValueError` to prevent the creation of a non-blocking socket.
+
.. exception:: NNTPError
Derived from the standard exception :exc:`Exception`, this is the base
diff --git a/Doc/whatsnew/3.9.rst b/Doc/whatsnew/3.9.rst
index 3320b7c..8cfb572 100644
--- a/Doc/whatsnew/3.9.rst
+++ b/Doc/whatsnew/3.9.rst
@@ -177,6 +177,13 @@
:class:`~imaplib.IMAP4_stream` were applied to this change.
(Contributed by Dong-hee Na in :issue:`38615`.)
+nntplib
+-------
+
+:class:`~nntplib.NNTP` and :class:`~nntplib.NNTP_SSL` now raise a :class:`ValueError`
+if the given timeout for their constructor is zero to prevent the creation of
+a non-blocking socket. (Contributed by Dong-hee Na in :issue:`39259`.)
+
os
--