added EnableLiveStreaming option to config to remove ReceiveBytes arr…

…ay by default to reduce consume memory issue.

src/Downloader/DownloadConfiguration.cs

@@ -6,43 +6,25 @@ namespace Downloader;
 
 public class DownloadConfiguration : ICloneable, INotifyPropertyChanged
 {
-    private int _bufferBlockSize;
-    private int _chunkCount;
-    private long _maximumBytesPerSecond;
-    private int _maximumTryAgainOnFailover;
+    private int _bufferBlockSize = 1024; // usually, hosts support max to 8000 bytes
+    private int _chunkCount = 1; // file parts to download
+    private long _maximumBytesPerSecond = ThrottledStream.Infinite; // No-limitation in download speed
+    private int _maximumTryAgainOnFailover = int.MaxValue; // the maximum number of times to fail.
     private long _maximumMemoryBufferBytes;
-    private bool _checkDiskSizeBeforeDownload;
-    private bool _parallelDownload;
-    private int _parallelCount;
-    private int _timeout;
-    private bool _rangeDownload;
-    private long _rangeLow;
-    private long _rangeHigh;
-    private bool _clearPackageOnCompletionWithFailure;
-    private long _minimumSizeOfChunking;
-    private bool _reserveStorageSpaceBeforeStartingDownload;
+    private bool _checkDiskSizeBeforeDownload = true; // check disk size for temp and file path
+    private bool _parallelDownload = false; // download parts of file as parallel or not
+    private int _parallelCount = 0; // number of parallel downloads
+    private int _timeout = 1000; // timeout (millisecond) per stream block reader
+    private bool _rangeDownload = false; // enable ranged download
+    private long _rangeLow = 0; // starting byte offset
+    private long _rangeHigh = 0; // ending byte offset
+    private bool _clearPackageOnCompletionWithFailure = false; // Clear package and downloaded data when download completed with failure
+    private long _minimumSizeOfChunking = 512; // minimum size of chunking to download a file in multiple parts
+    private bool _reserveStorageSpaceBeforeStartingDownload = false; // Before starting the download, reserve the storage space of the file as file size.
+    private bool _enableLiveStreaming = false; // Get on demand downloaded data with ReceivedBytes on downloadProgressChanged event 
 
     public event PropertyChangedEventHandler PropertyChanged = delegate { };
 
-    public DownloadConfiguration()
-    {
-        RequestConfiguration = new RequestConfiguration(); // default requests configuration
-        _maximumTryAgainOnFailover = int.MaxValue; // the maximum number of times to fail.
-        _parallelDownload = false; // download parts of file as parallel or not
-        _parallelCount = 0; // number of parallel downloads
-        _chunkCount = 1; // file parts to download
-        _timeout = 1000; // timeout (millisecond) per stream block reader
-        _bufferBlockSize = 1024; // usually, hosts support max to 8000 bytes
-        _maximumBytesPerSecond = ThrottledStream.Infinite; // No-limitation in download speed
-        _checkDiskSizeBeforeDownload = true; // check disk size for temp and file path
-        _rangeDownload = false; // enable ranged download
-        _rangeLow = 0; // starting byte offset
-        _rangeHigh = 0; // ending byte offset
-        _clearPackageOnCompletionWithFailure = false; // Clear package and downloaded data when download completed with failure
-        _minimumSizeOfChunking = 512; // minimum size of chunking to download a file in multiple parts
-        _reserveStorageSpaceBeforeStartingDownload = false; // Before starting the download, reserve the storage space of the file as file size.
-    }
-
     /// <summary>
     /// Create the OnPropertyChanged method to raise the event
     /// The calling member's name will be used as the parameter.
@@ -195,7 +177,7 @@ public long RangeHigh
     /// <summary>
     /// Custom body of your requests
     /// </summary>
-    public RequestConfiguration RequestConfiguration { get; set; }
+    public RequestConfiguration RequestConfiguration { get; set; } = new(); // default requests configuration
 
     /// <summary>
     /// Download timeout per stream file blocks
@@ -272,6 +254,21 @@ public long MaximumMemoryBufferBytes
             OnPropertyChanged();
         }
     }
+
+    /// <summary>
+    /// Set live streaming is enable or not. If it's enable get the on demand downloaded data
+    /// with ReceivedBytes on downloadProgressChanged event
+    /// Note: This option may consume more memory because copied each block of downloaded data in to ReceivedBytes
+    /// </summary>
+    public bool EnableLiveStreaming
+    {
+        get => _enableLiveStreaming;
+        set
+        {
+            _enableLiveStreaming = value;
+            OnPropertyChanged();
+        }
+    }
 
     public object Clone()
     {