String strUri = "rtsp://" + 서버IP + ":" + 서버포트 + 패스;
String strUserInfoHash = convertMd5Hash(사용자ID+ ":"+ strRealm +":"+ 사용자패스워드); 
String strUriHash = convertMd5Hash("ANNOUNCE"+":" + strUri); 
String strResHash = convertMd5Hash(strUserInfoHash+":"+ strNonce +":"+strUriHash); 
mStrAuthorization = "Digest username=\""+ 사용자ID+"\",realm=\""+strRealm+"\",nonce=\""+strNonce+"\",uri=\""+strUri+"\",response=\""+strResHash+"\""; 
strRequest = "ANNOUNCE rtsp://"+ 서버IP +":"+ 서버포트 + 패스+" RTSP/1.0\r\n" + 
"CSeq: " + 순번 + "\r\n" + 
"Content-Length: " + 내용.length() + "\r\n" + 
"Authorization: " + mStrAuthorization + "\r\n" + 
"Content-Type: application/sdp \r\n\r\n" + 
내용;