Are simultaneous TCP opens useful?


Eric Cooper (ecc@SPICE.CS.CMU.EDU)
25 Aug 87 20:44:27 GMT


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?

                                        Eric Cooper (ecc@spice.cs.cmu.edu)
                                        Computer Science Department
                                        Carnegie Mellon University



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