The StandardMethod enumeration defines the set of standard SIP method types.
The method is not one of the standard SIP messages enumerated below. This constant can be used to identify custom methods.
The method is an INVITE method.
The method is an ACK method.
The method is a BYE method.
The method is an OPTIONS method.
The method is a REGISTER method.
The method is a SUBSCRIBE method.
The method is a NOTIFY method.
The method is a MESSAGE method.
The method is a SERVICE method.
The method is an INFO method.
The method is a REFER method.
The method is a CANCEL method.
The method is a BENOTIFY method.
BENOTIFY is not a standard SIP message. BENOTIFY ("best effort" notify) enhances server performance by eliminating the response requirement. Otherwise, a BENOTIFY request has the same behavior as NOTIFY. Applications that require NOTIFY support need to implement similar processing for BENOTIFY.