From: Wei Wang <weiwan@xxxxxxxxxx> Add MSG_FASTOPEN flag description for send.2 Signed-off-by: Wei Wang <weiwan@xxxxxxxxxx> --- man2/send.2 | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/man2/send.2 b/man2/send.2 index 7f2340666..4b1902f75 100644 --- a/man2/send.2 +++ b/man2/send.2 @@ -255,6 +255,22 @@ data on sockets that support this notion (e.g., of type the underlying protocol must also support .I out-of-band data. +.TP +.BR MSG_FASTOPEN " (since Linux 3.7)" +Marks the attempt to send data in SYN like a combination of +.BR connect (2) +operation. It blocks until the handshake has completed and data is +buffered. + +For a non-blocking socket, it returns the number of bytes buffered +and sent in the SYN packet. If the cookie is not available locally, +it returns +.B EINPROGRESS +, and sends a SYN with a Fast Open cookie request automatically. +The caller needs to write the data again when the socket is connected. +On errors, it returns the same errno as +.BR connect (2) +if the handshake fails. .SS sendmsg() The definition of the .I msghdr -- 2.11.0.483.g087da7b7c-goog -- To unsubscribe from this list: send the line "unsubscribe linux-man" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
