[Standards] XEP-0115: invalid example + node in disco results

Pedro Melo melo at simplicidade.org
Thu Jul 3 07:15:57 UTC 2008


On Jul 2, 2008, at 7:19 PM, Peter Saint-Andre wrote:

> Pedro Melo wrote:
>> On Jul 1, 2008, at 11:18 PM, Tobias Markmann wrote:
>>> On Tue, Jul 1, 2008 at 11:43 PM, Peter Saint-Andre  
>>> <stpeter at stpeter.im> wrote:
>>> Tobias Markmann wrote:
>>> Okay. How should a client respond if it requests disco for a node  
>>> with the caps hash of the previous presence though receives a  
>>> disco result with a node url including a different hash?
> You're not checking the disco NodeID, you're checking the  
> disco#info against the caps hash you have on file for that user. Or  
> so it seems to me.
>> Did you receive a new presence from that client between the moment  
>> you sent your IQ request and you got the IQ reply? If yes, and if  
>> the hash in said presence is the same as the response, then I  
>> would make it "business as usual". Basically, you accept that the  
>> response is consistent with the current caps hash for that client.
>> In a general way, I would say:
>>  * if the hash matches the payload of the IQ response, then you  
>> can cache it for future use;
> Agreed, business as usual.
>>  * if the hash does not match the payload; you cannot cache it (as  
>> per spec), but you should use it to represent the client  
>> capabilities until you get a new caps hash.
> I think you'd ping someone else in your roster if a problem like  
> that persists. I'm not sure what you mean by "represent the client  
> capabilities until you get a new caps hash" because hash doesn't  
> match the disco#info.

I meant that the list of features that he got represent the  
capabilities of the client, but he cannot associate that feature list  
with the hash given.

Compare it with a situation of a client that does support disco#info  
but does not support xep-0115: you trust the feature list to match  
the capabilities of the client.

Best regards,
Pedro Melo
Blog: http://www.simplicidade.org/notes/
XMPP ID: melo at simplicidade.org

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