Date: Tue, 8 Aug 1995 10:40:57 -0400 From: Garrett Wollman <wollman@halloran-eldar.lcs.mit.edu> To: Bertus Pretorius <bertus@mikom.csir.co.za> Cc: current@freebsd.org Subject: Re: rlogin bug -> OOB bug? Message-ID: <9508081440.AA02661@halloran-eldar.lcs.mit.edu> In-Reply-To: <199508081227.OAA01386@dolphin.mikom.csir.co.za> References: <199508081227.OAA01386@dolphin.mikom.csir.co.za>
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<<On Tue, 8 Aug 1995 14:27:03 +0200 (SAT), Bertus Pretorius <bertus@mikom.csir.co.za> said: Please press return after 72 characters... > Telnet and ftp (rlogin not checked) send more than one OOB byte - >ftp 2 and telnet often a long string. This is not true, for a very simple reason: TCP doesn't have out-of-band delivery (although the BSD TCP stack tries to fake it, usually unsuccessfully as seen here). What TCP has is an urgent data pointer, which indicates ``at this point in the segment, there is some urgent data'' with no specification of the length thereof. -GAWollman -- Garrett A. Wollman | Shashish is simple, it's discreet, it's brief. ... wollman@lcs.mit.edu | Shashish is the bonding of hearts in spite of distance. Opinions not those of| It is a bond more powerful than absence. We like people MIT, LCS, ANA, or NSA| who like Shashish. - Claude McKenzie + Florent Vollant
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