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    SubjectRe: [PATCH] fix tcp_default_win_scale.
    On Wed, 7 Jul 2004 00:44:53 +0200
    bert hubert <ahu@ds9a.nl> wrote:

    > Not true - the outgoing SYN packet had window scale 7, when it was sent. The
    > SYN|ACK had window scale 0, when received by the initiating system.
    >
    > Also - even if the remote were to assume a 47 byte window size, would it not
    > be able to send small packets? Or does the window size also include
    > packet haders?

    SWS avoidance makes us not send packets. See this quote in an email
    from John Heffner the other week:

    ================================
    To elaborate on my earlier mail. my hypothesis is that somehow the web
    server beleives that we sent a winscale of 0. In such a case, when we try
    to advertise our initial 4*MSS (5840 bytes) of window, with a window scale
    of 3 we use a value of 730 in the window field. All sender SWS avoidance
    (RFC1122) tests will fail, most notably 1 (because we already advertised
    5840 bytes and 730 < 5840/2) and 3 (because 730 < 1460). With a winscale
    of 2, we will use a value of 1460 in the window field, so both tests will
    succeed.
    ================================
    -
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