This interface represents the SIP-If-Match header, as defined by
RFC3903.
The SIP-If-Match header is used by a client (event state publisher) in
a PUBLISH request, to update previously published event state. The value is
obtained from the server in a
javax.sip.header.SIPETagHeader in a
2xx response to a previous PUBLISH.
Sample syntax:
SIP-If-Match: dx200xyz
A server must ignore Headers that it does not understand. A proxy must not
remove or modify Headers that it does not understand.
author: BEA Systems, NIST since: 1.2 |