Message Type,Description,Reference
0x00,Reserved,[RFC9185]
0x01,Supported SRTP Protection Profiles,[RFC9185]
0x02,Unsupported Version,[RFC9185]
0x03,Media Keys,[RFC9185]
0x04,Tunneled DTLS,[RFC9185]
0x05,Endpoint Disconnect,[RFC9185]
0x06-0xFF,Unassigned,