Last week we had a brief chat in the Psi conference room about how to handle unsupported stream features:
http://conference.psi-im.org/[EMAIL PROTECTED]/2008/10/08.html#15:15:12 The current text reads: If an entity does not understand or support a feature that has been advertised, it MUST silently ignore the associated feature advertisement. This would lead to undesirable behavior now that we say a stream feature advertisement must include either <optional/> or <required/> as a child element. Therefore I propose that we change the text to read: If an entity does not understand or support a feature that has been advertised, it MUST still inspect the feature advertisement to determine if negotiation of the feature is mandatory. If negotiation of an unsupported feature is mandatory (as determined by inclusion of the <required/> child element), then the entity MUST abort the stream negotiation process. If negotiation of an unsupported feature is discretionary (as determined by inclusion of the <optional/> child element or the absence of a child element), the entity MUST silently ignore the associated feature advertisement and proceed with the stream negotiation process. /psa
