* Jonas Wielicki <jo...@wielicki.name> [2018-02-23 11:39]: > - This is a larger one: If we’re changing XEP-0077 flow in a backward- > incompatible manner, wouldn’t it make more sense to do this in a wholly new > namespace, with a new stream feature to advertise support? That would save a > round-trip (to detect that it *won't* work) and allows to passively detect > support.
The client advertises suport by adding a <preauth> element into the initial IQ. AFAIU IBR, the initial IQ needs to be sent anyway, so we are piggy-backing here without additional round-trips. The server either ignores the element or returns a modified data form / IBR pseudo-form if supported. Georg
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