RE: Gen-ART review of draft-ietf-pcp-upnp-igd-interworking-07

[<[e-mail]>]

Dear Peter,

I changed the text as follows:

OLD:

   If the requested external port is not available, the PCP server will
   send a CANNOT_PROVIDE_EXTERNAL error response.  If a short lifetime
   error is returned, the IGD-PCP IWF MAY re-send the same request to
   the PCP Server after 30 seconds.  If a PCP error response is
   received, the IGD-PCP IWF relays a negative message to the UPnP
   Control Point with ConflictInMappingEntry as the error code.

NEW:

   If the requested external port is not available, the PCP server will
   send a CANNOT_PROVIDE_EXTERNAL error response:

   1.  If a short lifetime error is returned, the IGD-PCP IWF MAY resend
       the same request to the PCP Server after 30 seconds without
       relaying the error to the UPnP Control Point.  The IGD-PCP IWF
       MAY repeat this process until a positive answer is received or
       some maximum retry limit is reached.  When the maximum retry
       limit is reached, the IGD-PCP IWF relays a negative message to
       the UPnP Control Point with ConflictInMappingEntry as the error
       code.

   2.  If a long lifetime error is returned, the IGD-PCP IWF relays a
       negative message to the UPnP Control Point with
       ConflictInMappingEntry as the error code.

Better?

Cheers,
Med

>-----Message d'origine-----
>De : Peter Yee [mailto:[e-mail]]
>Envoyé : mardi 9 avril 2013 20:58
>À : BOUCADAIR Mohamed OLNC/OLN; draft-ietf-pcp-upnp-igd-
>[e-mail]
>Cc : [e-mail]; [e-mail]
>Objet : RE: Gen-ART review of draft-ietf-pcp-upnp-igd-interworking-07
>
>Med,
>	Thanks for the swift response to my review.  See my one reply
>inline.
>
>		Kind regards,
>		-Peter
>
>>>Page 13, 1st paragraph, 3rd sentence: what's meant here is if any PCP
>>>error other than a short-lifetime error, or in the case of a failed
>>>resend, any PCP error at all.  The wording makes it seem like the
>>>short-lifetime errors are somehow not PCP errors and is therefore
>>>confusing.  It also doesn't explicitly deal with how many repeats should
>be done on a resend.
>
>>[Med] The basic behavior is to relay the received error to the UPnP CP.
>For
>the short-lifetime errors, the IWF may decide to resend the request and not
>relay those errors immediately to the UPnP CP. The number of repeats is not
>specified here as it can be implementation-specific.
>
>Your explanation is fine.  I just found the wording "If a PCP  error
>response is received" to sound ambiguously as if the short-lifetime errors
>were not a subset of PCP errors.
>