Path: utzoo!utgpu!water!watmath!clyde!att-cb!osu-cis!tut.cis.ohio-state.edu!mailrus!ames!pasteur!ucbvax!UMDD.BITNET!BRUCE
From: BRUCE@UMDD.BITNET (Bruce Crabill)
Newsgroups: comp.protocols.tcp-ip
Subject: TCP state diagram mistake
Message-ID: <8804170915.AA06490@ucbvax.Berkeley.EDU>
Date: 17 Apr 88 08:12:25 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The Internet
Lines: 10

This is probably a rediscovery of an old mistake, but in RFC-793 (TCP
Protocol Specification) in the TCP Connection State Diagram on page 23,
the transition from the SYN-SENT state to the SYN-RECEIVED state by the
reception of a bare SYN, indicates that this should case a bare ACK to
be sent.  However, on page 32 (Simultaneous Connection Synchronizaton)
and text on page 68, it would appear that the correct thing to do is to
send a SYN,ACK.  If this is a known problem, is there an RFC or other
location where known problems are kept?

                                       Bruce