Port collisions: use domains!


Joe Weening (JJW@SU-AI.ARPA)
17 May 86 1012 PDT


Why not add service-name to port-number mapping to the information stored
in domain nameserver databases? For example, if we decide to implement
the Whizbang protocol on port 1234, then our nameserver would contain a
resource record of the form

    Whizbang.SAIL.Stanford.EDU IN TCP-PORT 1234

Applications would refer to the protocol by name, and find the port number
using a domain resolver, which will cache the information for next time.
The "well-known" protocols would bypass this mechanism since their port
numbers are known.

                                                Joe



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