Patch #1682878: the new socket methods are recv_into and recvfrom_into, not *_buf.
diff --git a/Doc/lib/libsocket.tex b/Doc/lib/libsocket.tex
index 5ba4310..e9c853a 100644
--- a/Doc/lib/libsocket.tex
+++ b/Doc/lib/libsocket.tex
@@ -584,6 +584,7 @@
\manpage{recv}{2} for the meaning of the optional argument
\var{flags}; it defaults to zero. (The format of \var{address}
depends on the address family --- see above.)
+\versionadded{2.5}
\end{methoddesc}
\begin{methoddesc}[socket]{recv_into}{buffer\optional{, nbytes\optional{, flags}}}
@@ -593,6 +594,7 @@
receive up to the size available in the given buffer.
See the \UNIX{} manual page \manpage{recv}{2} for the meaning of the
optional argument \var{flags}; it defaults to zero.
+\versionadded{2.5}
\end{methoddesc}
\begin{methoddesc}[socket]{send}{string\optional{, flags}}