>From 5.3.4:

The certificates bucket SHOULD contain all the certificates necessary
   to verify every signature in both the message and the internal
   message objects.  This is the only location in the message which
   contains certificates, thus allowing for only a single copy of each
   certificate to be sent.  In systems which have some alternate
   certificate distribution mechanism, some certificates MAY be omitted.
   However, implementors should note that this creates the possibility
   that messages may not be immediately verifiable because certificates
   must first be retrieved.


This implies that a TURN-SERVICE implementation caches the
certificates needed for replication.  Will add a note to the
TURN-SERVICE description for clarification.

Bruce



On Sun, Jul 17, 2011 at 1:11 PM, Marc Petit-Huguenin <[email protected]> wrote:
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> When storing a TURN-SERVICE kind, the storing peer cannot count on having the
> certificate used to sign the value available locally, because the
> CERTIFICATE_BY_NODE and CERTIFICATE_BY_USER kinds will be stored in a 
> different
> peer.
>
> Is the intent that the storing peer remotely fetch the certificate for the
> validation or should it fail when the certificate is not sent in the
> certificates field of the SecurityBlock?
>
> Note that if the request should fail, then it is a problem with replications 
> as
> there is very little chance to have the right certificate in the SecurityBlock
> when the value is replicated.
>
> - --
> Marc Petit-Huguenin
> Personal email: [email protected]
> Professional email: [email protected]
> Blog: http://blog.marc.petit-huguenin.org
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