From de092003b7199ae1f9aba91ef15d7106725ac72c Mon Sep 17 00:00:00 2001 From: Michael Kerrisk Date: Mon, 1 Dec 2008 10:07:38 -0500 Subject: [PATCH] tcp.7: Note that MSG_PEEK can be used on out-of-band data Signed-off-by: Michael Kerrisk --- man7/tcp.7 | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/man7/tcp.7 b/man7/tcp.7 index f567862ff..c9652ea76 100644 --- a/man7/tcp.7 +++ b/man7/tcp.7 @@ -970,6 +970,11 @@ This violates RFC\ 1122, but is required for interoperability with other stacks. It can be changed via .IR /proc/sys/net/ipv4/tcp_stdurg . + +It is possible to peek at out-of-band data using the +.IR recv (2) +.B MSG_PEEK +flag. .SS Ioctls These following .BR ioctl (2)