SO_LINGER + shutdown(2)

[Poul-Henning Kamp]

I was somewhat surprised to see that calling shutdown(SHUT_WR) on
a TCP socket with SO_LINGER set {.l_onoff = 1, .l_linger = 0} does
not in fact flush the send queue orderly, but immediately RST's the
connection.

I realize this is an issue for the Dept. of deep TCP arcanæ and not
something to be changed lightly, so consider this more of an
observation than bug report.

-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk at FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe
Never attribute to malice what can adequately be explained by incompetence.