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From: MAB@CORNELLC.CIT.CORNELL.EDU (Mark Bodenstein)
Newsgroups: comp.protocols.tcp-ip
Subject: Re: connect "collisions" in TCP
Message-ID: <9102011416.AA24892@ucbvax.Berkeley.EDU>
Date: 31 Jan 91 16:38:38 GMT
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On 30 Jan 91 15:58:31 GMT you said:
>
>In TCP, the result of a "connect collision" (i.e., two peers
>"simultaneously" attempting to open a connection to the same pair
>of ports) is a single connection.  I have two questions:
> ...
>1. Can anyone cite an application or higher-level protocol that
>makes use of (or could, if it were possible) this fact,
>i.e. permits users to establish connections symmetrically?

The VMNET (NJE over TCP/IP) protocol makes use of this; VMNET servers
both passively listen for connections and actively try to connect to
their configured peers; simultaneous symmetric connection attempts are
possible and result in a single connection.

I understand that the VMNET protocol, which was crafted at Princeton
University, will be documented in an RFC Real Soon Now.

Mark Bodenstein   (mab@cornellc.cit.cornell.edu)
Cornell University