3.4.4.4 Notification That the Last RTP Packet Has Been Sent
This notification indicates that the higher layer does not have any more RTP packets to send to the client.
If the value of the State variable is Streaming, then the DMS MUST send an ANNOUNCE request to the client, according to the rules in [DLNA] guideline 7.4.261.
The ANNOUNCE request SHOULD include the Content-Type header, as specified in section 2.2.3.2.
The ANNOUNCE request SHOULD include the X-Playlist-Gen-Id header, as specified in section 2.2.3.7.
The DMS MUST process the ANNOUNCE response according to the general rules for RTSP defined in [DLNA] guideline 7.4.210.
If the value of the State variable is Streaming, then the DMS MUST set the value of the State variable to RTSP_Ready, and the DMS MUST be prepared to receive any of the following requests: