rtsp redirect error

The document says that exoplayer supports redirection. Why does it report the following error?

This is my rtsp source： `rtsp://10.255.27.28/PLTV/88888909/224/3221225773/10000100000000060000000000006032_0.smil?rrsip=10.255.27.25&icpid=&accounttype=1&limitflux=-1&limitdur=-1&tenantId=8601&accountinfo=%2C28252%2C172.25.116.120%2C20211021153443%2C04710001000000050000000000000227%2Caff1a051696a99f9cf19a66579021027387546%2C-1%2C0%2C1%2C%2C%2C7%2C9764%2C%2C%2C4%2C%2CEND&GuardEncType=2&it=H4sIAAAAAAAAAE2OwQ6CMBBE_6bHhmIxcOgJY2Ji0ET0aga6VEKh2KKJfy8YDh72MJv3JjN51HTYKZFWWZpRpsVWyDimtEGzEVJGkEkqkLFAz8KpmNWwth1M4fSi3S75XUQ8TpL5uIgkK5fCvYVR0Y8tXn1Ffg2zeCH_bmtSOjT8jcBhjCeDqXUDP1t8rt6uCKNyHTe8rGXTEkqEbn6wB0Lu-hGe9NGZH6ca2EBsRN3BUIGe_ryT1_OIL9uVm3DtAAAA`

My Androidstudio logcat：
E/ExoPlayerImplInternal: Playback error
com.google.android.exoplayer2.ExoPlaybackException: Source error
at com.google.android.exoplayer2.ExoPlayerImplInternal.handleIoException(ExoPlayerImplInternal.java:624)
at com.google.android.exoplayer2.ExoPlayerImplInternal.handleMessage(ExoPlayerImplInternal.java:600)
at android.os.Handler.dispatchMessage(Handler.java:98)
at android.os.Looper.loop(Looper.java:136)
at android.os.HandlerThread.run(HandlerThread.java:61)
Caused by: java.io.IOException: DESCRIBE 302
at com.google.android.exoplayer2.source.rtsp.RtspMediaPeriod$InternalListener.onSessionTimelineRequestFailed(RtspMediaPeriod.java:562)
at com.google.android.exoplayer2.source.rtsp.RtspClient.dispatchRtspError(RtspClient.java:261)
at com.google.android.exoplayer2.source.rtsp.RtspClient.access$500(RtspClient.java:66)
at com.google.android.exoplayer2.source.rtsp.RtspClient$MessageListener.handleRtspMessage(RtspClient.java:459)
at com.google.android.exoplayer2.source.rtsp.RtspClient$MessageListener.lambda$onRtspMessageReceived$0$com-google-android-exoplayer2-source-rtsp-RtspClient$MessageListener(RtspClient.java:420)
at com.google.android.exoplayer2.source.rtsp.RtspClient$MessageListener$$ExternalSyntheticLambda0.run(Unknown Source)
at android.os.Handler.handleCallback(Handler.java:733)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:136) 
at android.os.HandlerThread.run(HandlerThread.java:61) 
Caused by: com.google.android.exoplayer2.source.rtsp.RtspMediaSource$RtspPlaybackException: DESCRIBE 302
at com.google.android.exoplayer2.source.rtsp.RtspClient$MessageListener.handleRtspMessage(RtspClient.java:461)
at com.google.android.exoplayer2.source.rtsp.RtspClient$MessageListener.lambda$onRtspMessageReceived$0$com-google-android-exoplayer2-source-rtsp-RtspClient$MessageListener(RtspClient.java:420) 
at com.google.android.exoplayer2.source.rtsp.RtspClient$MessageListener$$ExternalSyntheticLambda0.run(Unknown Source) 
at android.os.Handler.handleCallback(Handler.java:733) 
at android.os.Handler.dispatchMessage(Handler.java:95) 
at android.os.Looper.loop(Looper.java:136) 
at android.os.HandlerThread.run(HandlerThread.java:61)