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Subject: [Bug 206716] HPN-SSH: getsockopt(SO_SNDBUF) returns high watermark,
 not setsockopt(SO_SNDBUF)
Date: Mon, 28 Mar 2016 21:49:04 +0000
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D206716

--- Comment #5 from Chris Stankevitz <chris-freebsd-bugs@stankevitz.com> ---
(In reply to timon from comment #4)

Thank you.  I modified the example to increase the buffer size (vs. decreas=
e)
and I see the same thing.  It must be that the conclusions reached in this
discussion are wrong:

=3D=3D begin quote of [1] =3D=3D

So, I looked at what getsockopt SO_RCVBUF returns, and it returns:=20
                case SO_RCVBUF:=20
                        optval =3D so->so_rcv.sb_hiwat;=20

Which is NOT S-BMAX, so it looks like OpenSSH only ever gets 66052 bytes=20
for the buffer...=20

If it's decided to base it's waiting for ack on SO_RCVBUF, then this=20
is probably where the issue is...=20

=3D=3D end quote of [1] =3D=3D=3D

So it sounds like this bug should be closed/worksforme.

Chris

[1]
http://freebsd.1045724.n5.nabble.com/ssh-over-WAN-TCP-window-too-small-tp60=
35112p6035301.html

--=20
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