HTTP/1.0 200 OK
Content-type: text/html
Expires: 0

RTSP/1.0 200 OK
Server: H264DVR 1.0
Cseq: 1
Public: OPTIONS, DESCRIBE, SETUP, TEARDOWN, GET_PARAMETER, SET_PARAMETER, PLAY, PAUSE

HTTP/1.1 401 Unauthorized
Connection: Keep-Alive
WWW-Authenticate: Digest realm="HuaweiHomeGateway",nonce="833d3ee2c7abb8b20e8db7be49cf12c7", qop="auth", algorithm="MD5"
Content-Length: 0