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October 2001, Week 2

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Subject:
Re: Sockets and Ports
From:
Jeff Kell <[log in to unmask]>
Reply To:
Jeff Kell <[log in to unmask]>
Date:
Tue, 9 Oct 2001 20:23:41 -0400
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text/plain (19 lines) 
Another rendition of the difference...

A "port" is a division of the UDP or TCP protocols, ranging 1-65535.

A "socket" is a unique tuple of source-IP/source-port/dest-IP/dest-port
within a protocol (TCP in this instance since UDP is connectionless).

A "call socket" is a special case of an "unbound" socket that is
listening for a connection (TCP) or packet (UDP).

Multiple sockets can co-exist on the same machine (typically the host
or server side) on the same port; they are made unique by having
different source-IP/source-port combinations.

Jeff

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