Issue with Custom Headers in ExoPlayer - "Connection Reset" Before Playback

Dear ExoPlayer Team,

I am experiencing an issue with ExoPlayer when using custom headers for streaming. My server requires specific request headers (such as User-Agent, Referer, Origin, etc.), and without them, playback does not work. I have properly set these headers using DefaultHttpDataSource.Factory() in my implementation.

However, the problem is that when attempting to play a stream, ExoPlayer initially fails multiple times with the following error before eventually playing the stream successfully:

EventLogger              E  internalError [eventTime=0.58, mediaPos=18.52, window=0, period=0, loadError
                              androidx.media3.datasource.HttpDataSource$HttpDataSourceException: java.net.SocketException: Connection reset
                                  at androidx.media3.datasource.DefaultHttpDataSource.open(DefaultHttpDataSource.java:370)
                                  at androidx.media3.datasource.StatsDataSource.open(StatsDataSource.java:88)
                                  at androidx.media3.exoplayer.hls.HlsMediaChunk.prepareExtraction(HlsMediaChunk.java:523)
                                  at androidx.media3.exoplayer.hls.HlsMediaChunk.feedDataToExtractor(HlsMediaChunk.java:496)
                                  at androidx.media3.exoplayer.hls.HlsMediaChunk.loadMedia(HlsMediaChunk.java:465)
                                  at androidx.media3.exoplayer.hls.HlsMediaChunk.load(HlsMediaChunk.java:422)
                                  at androidx.media3.exoplayer.upstream.Loader$LoadTask.run(Loader.java:453)
                                  at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
                                  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:644)
                                  at java.lang.Thread.run(Thread.java:1012)
                              Caused by: java.net.SocketException: Connection reset
                                  at java.net.SocketInputStream.read(SocketInputStream.java:191)
                                  at java.net.SocketInputStream.read(SocketInputStream.java:143)
                                  at com.android.okhttp.okio.Okio$2.read(Okio.java:138)
                                  at com.android.okhttp.okio.AsyncTimeout$2.read(AsyncTimeout.java:213)
                                  at com.android.okhttp.okio.RealBufferedSource.indexOf(RealBufferedSource.java:307)
                                  at com.android.okhttp.okio.RealBufferedSource.indexOf(RealBufferedSource.java:301)
                                  at com.android.okhttp.okio.RealBufferedSource.readUtf8LineStrict(RealBufferedSource.java:197)
                                  at com.android.okhttp.internal.http.Http1xStream.readResponse(Http1xStream.java:188)
                                  at com.android.okhttp.internal.http.Http1xStream.readResponseHeaders(Http1xStream.java:129)
                                  at com.android.okhttp.internal.http.HttpEngine.readNetworkResponse(HttpEngine.java:750)
                                  at com.android.okhttp.internal.http.HttpEngine.readResponse(HttpEngine.java:622)
                                  at com.android.okhttp.internal.huc.HttpURLConnectionImpl.execute(HttpURLConnectionImpl.java:475)
                                  at com.android.okhttp.internal.huc.HttpURLConnectionImpl.getResponse(HttpURLConnectionImpl.java:411)
                                  at com.android.okhttp.internal.huc.HttpURLConnectionImpl.getResponseCode(HttpURLConnectionImpl.java:542)
                                  at androidx.media3.datasource.DefaultHttpDataSource.makeConnection(DefaultHttpDataSource.java:550)
                                  at androidx.media3.datasource.DefaultHttpDataSource.open(DefaultHttpDataSource.java:364)
                                  at androidx.media3.datasource.StatsDataSource.open(StatsDataSource.java:88) 
                                  at androidx.media3.exoplayer.hls.HlsMediaChunk.prepareExtraction(HlsMediaChunk.java:523) 
                                  at androidx.media3.exoplayer.hls.HlsMediaChunk.feedDataToExtractor(HlsMediaChunk.java:496) 
                                  at androidx.media3.exoplayer.hls.HlsMediaChunk.loadMedia(HlsMediaChunk.java:465) 
                                  at androidx.media3.exoplayer.hls.HlsMediaChunk.load(HlsMediaChunk.java:422) 
                                  at androidx.media3.exoplayer.upstream.Loader$LoadTask.run(Loader.java:453) 
                                  at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) 
                                  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:644) 
                                  at java.lang.Thread.run(Thread.java:1012) 

This does not happen in other media players (such as VLC, MX Player, or JWPlayer), which play the stream immediately without issues. I have tested using a demo app, but I could not properly implement custom headers in the demo.

Could you please provide guidance on whether there is a specific way to handle custom headers in ExoPlayer? If needed, I can provide a test stream URL along with the required headers for you to investigate further.

Looking forward to your response.

Best regards,