1.8 Vendor-Extensible Fields
This protocol allows extensibility for the following fields:
Upgrades: Vendors can define new protocol upgrades in addition to the ones specified in section 184.108.40.206.
Faults: An implementation can define new faults in addition to the ones specified in section 2.2.5. The fault is a URI, as defined in [RFC2396] encoding using UTF-8 encoding as specified in [RFC2279]. Vendors define a URI namespace for their faults and that namespace is different from the http://schemas.microsoft.com/ws/2006/05/framing/faults/ namespace used by the faults in this protocol.