Re: Are simultaneous TCP opens useful?


Andre' Hut (sdcrdcf!psivax!nrcvax!nrc-ut!andre@hplabs.hp.com)
27 Aug 87 21:48:26 GMT


In article <1261@spice.cs.cmu.edu> ecc@spice.cs.cmu.edu (Eric Cooper) writes:
>Can anyone defend the usefulness of allowing simultaneous active OPENs to
>result in a single connection? It seems to me that a pair of would-be
>communicants cannot rely on this to succeed, since it would depend on the
>relative time at which they give the OPEN command.
>
>Suppose an implementation rejected incoming SYNs when in the SYN-SENT state,
>instead of entering SYN-RECEIVED. How could you ever observe that this
>implementation is really nonconforming, and not just faster or slower?
>
>Am I wrong? Does anyone have examples of applications that depend on this
>feature?

yeah.. A pipe. A TCP connection can be used as a pipe if it connects to
itself. This sounds wierd, but it works, and its a guaranteed simultaneous
open.

--
-----------------------------------------------------------------------------
		sdcsvax-\	  ihnp4-\
			 \		 \
Andre' Hut		sdcrdcf!psivax!nrcvax!nrc-ut!andre
			 /		/	 /
		hplabs--/ ucbvax!calma-/	/
				utah-gr!uplherc/
Network	Research Corporation
923 Executive Park Dr. Suite C
Salt Lake City,	Utah 84117
-----------------------------------------------------------------------------



This archive was generated by hypermail 2.0b3 on Thu Mar 09 2000 - 14:39:14 GMT