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Thread: strange dmesg output

  1. #1
    Join Date
    Jan 2006
    Beans
    616
    Distro
    Ubuntu Development Release

    strange dmesg output

    I have a screenlet that outputs dmesg on my desktop every once in a while. Today, after a period of inactivity, I saw my desktop, and found this strange message:

    Code:
    TCP: Treason uncloaked! Peer 217.70.119.238:38462/44943 shrinks window 477191629:477191634. Repaired.
    repeated some times...Sounds serious, but as everything seems to keep working as it should, Im not taking to much attention on this...Should I??

    (On the other hand, I posted this here cause I found funny the "Treason uncloaked!" part of the message )
    ...

  2. #2
    Join Date
    May 2008
    Beans
    Hidden!

    Re: strange dmesg output

    Since I don't have a copy of the source, this site will do. It originates here:

    http://lxr.linux.no/linux+v2.6.28.8/...p_timer.c#L302

    PHP Code:
            if (!tp->snd_wnd && !sock_flag(skSOCK_DEAD) &&
                    !((
    << sk->sk_state) & (TCPF_SYN_SENT TCPF_SYN_RECV))) {
                        
    /* Receiver dastardly shrinks window. Our retransmits
                         * become zero probes, but we should not timeout this
                         * connection. If the socket is an orphan, time it out,
                         * we cannot allow such beasts to hang infinitely.
                         */ 
    What it means, I have no idea...

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