Re: [port-srv-reg] Four final points for discussion

[Stuart Cheshire <[e-mail]>]

On 3 Sep, 2010, at 01:31, Alexey Melnikov wrote:

>>> 2. Service Name Rules
>>>
>>> I liked Joe's earlier suggestion to disallow all-numeric service  
>>> names, to avoid service names that look like a numeric port  
>>> number. However, even with that rule, we still allow service  
>>> names like this: "6000-6063" (looks like the X Window System port  
>>> range). Do we care? We could prevent that by requiring that all  
>>> service names contain at least one alphabetic character.
>>>
>> I like that proposal.
>>
> Fine with me.


I've made this change. The text now says:

    Valid service names:

    o  MUST be at least 1 character and no more than 15 characters long

    o  MUST contain only US-ASCII [ANSI.X3-4.1986] letters 'A' - 'Z' and
       'a' - 'z', digits '0' - '9', and hyphens ('-', ASCII 0x2D or
       decimal 45)

    o  MUST contain at least one letter ('A' - 'Z' or 'a' - 'z')

    o  MUST NOT begin or end with a hyphen

    The reason for requiring at least one letter is to avoid service
    names like "23" (could be confused with a numeric port number) or
    "6000-6063" (could be confused with a numeric port number range).
    Although service names may contain both upper-case and lower-case
    letters, case is ignored for comparison purposes, so both "http" and
    "HTTP" denote the same service.

Stuart Cheshire <[e-mail]>
* Wizard Without Portfolio, Apple Inc.
* www.stuartcheshire.org