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:peter@xxxxxxxxxx]
>Envoyé : mardi 9 avril 2013 20:58
>À : BOUCADAIR Mohamed OLNC/OLN; draft-ietf-pcp-upnp-igd-
>interworking.all@xxxxxxxxxxxxxx
>Cc : gen-art@xxxxxxxx; ietf@xxxxxxxx
>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.
>