This C# project implements randomly accessible stream on HTTP 1.1 transport. Typically, HttpClient provides almost all HTTP features but it just provides us with a way to download a file completely. The implementation takes advantage of HTTP 1.1 range access or on fallback case, it uses HTTP/1.0 sequential download anyway.
The source code is available at GitHub.
A prebuilt NuGet package is available: Espresso3389.HttpStream.
To install HttpStream, run the following command in the Package Manager Console:
PM> Install-Package Espresso3389.HttpStream
This module is built against .NET Platform Standard 2.0 (netstandard2.0).
For compatible .NET implementations, see .NET Standard - .NET implementation support.
using Espresso3389.HttpStream;
// cache stream
var fs = File.Create("cache.jpg");
// The third parameter, true indicates that the httpStream will close the cache stream.
var uri = new Uri("https://example.com/somewhere/some-large-image.jpg");
var cacheSize = 1024 * 64;
var httpStream = await HttpStream.CreateAsync(uri, fs, true, cacheSize, null);
// RangeDownloaded is called on every incremental download
httpStream.RangeDownloaded += (sender, e) =>
{
Console.WriteLine("Progress: {0}%", (int)(100 * httpStream.CachedRatio));
};
// The following code actually invokes download whole the file
// You can use BufferedStream to improve I/O performance.
var bmp = await BitmapFactory.DecodeStreamAsync(new BufferedStream(httpStream, cacheSize));The codes/binaries are licensed under MIT License.