ProgressiveDownloader class

Progressive HTTP downloader that streams bytes to a growing file. Supports resume, cancellation, progress reporting, and waiting for minimum bytes. Uses HTTP client pooling for connection reuse.

Properties

hashCode → int

The hash code for this object.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited

Static Methods

cancel(String url) → void

Cancel an active download.

cancelAll() → void

Cancel all active downloads.

download({required String url, required String filePath, int startByte = 0, Map<String, String>? headers}) → Stream<DownloadProgress>

Start downloading url to filePath, resuming from startByte. Returns a stream of progress updates.

downloadAndWaitForBytes({required String url, required String filePath, int startByte = 0, int minBytes = minBytesForPlayback, Map<String, String>? headers}) → Future<DownloadResult>

Start downloading and wait until minimum bytes are available. Returns a Future that completes when minBytes are downloaded. Download continues in background after Future completes.

Constants

chunkSize → const int

Chunk size for progress reporting (64KB)

maxConnections → const int

Maximum HTTP connections for pooling

minBytesForPlayback → const int

Minimum bytes needed for ExoPlayer/AVPlayer to start playback Increased from 64KB to 128KB for smoother playback start