Re: [Uri-review] 'skype' and 'callto' schemes

Graham Klyne <GK-lists@ninebynine.org> Mon, 18 July 2011 09:28 UTC

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Date: Mon, 18 Jul 2011 10:22:44 +0100
From: Graham Klyne <GK-lists@ninebynine.org>
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Subject: Re: [Uri-review] 'skype' and 'callto' schemes
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As skype is so widely used, I think a provisional scheme registration would be 
sensible, but I don't think any new document should be created.  If there's a 
non-confidential Skype document we can point to, that should be enough.

I vaguely recall callto: has been "around" for a while, but don't know if it was 
ever formally defined.  According to http://www.w3.org/Addressing/schemes (now 
retired, but still a potential source of useful pointers), it looks as if it may 
have been a Microsoft specification from 1998 
(http://support.microsoft.com/kb/q157277/).

#g
--


Mykyta Yevstifeyev wrote:
> Hello,
> 
> Skype(tm) is known to use 'skype' and 'callto' URI schemes.  There is no 
> any clear specification of the schemes on the Skype site, nor can I find 
> it on the Net.  However, the syntax is known; it is said to be 
> (transforming into ABNF):
> 
>> skype-uri      = "skype:" name [params]
>> name           = telephone-subscriber / skype-username
>> telephone-subscriber = <as defined in RFC 3966>
>> skype-username = ALPHA 5( ALPHA / DIGIT ) *26( ALPHA/DIGIT)
>> params         = "?" param
>> param          = "add" / "call" / "chat" / "sendfile"
>>                / "userinfo" / ext-param
>> ext-param      = 1*ALPHA
>>
>> callto-uri     = "callto:" name
> 
> The operations of 'callto' URIs are to open a Skype call to <name>; 
> 'skype' URI provide richer semantics, per <params>.  Documentation for 
> Skype operations is available from 
> share.skype.com/media/1.2_api_doc_en.pdf (this document says it is 
> confidential ;-).
> 
> The 'skype' URIs are known to be widely used; 'callto' are also used, 
> but not as often as 'skype'.  Currently, the schemes are not officially 
> registered with IANA; so my questions is: Can (should?) an effort to 
> specify these two schemes be undertaken?  Any thoughts are welcome.
> 
> Mykyta Yevstifeyev
> 
> 
> 
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