brotli.net

.NET implementation of the brotli algorithm,provide similar interface to Google offical API.

Quality and window control is supported.

Supported and tested on:

• Dotnet standard 2(.NET Framework [v4.6.1] and .net core [2] above)
• Windows/Linux/MacOSX
• .NET Framework v4.5

Besides quality controll,the library use the native runtime and its performance should be better than System.IO.Compress.BrotliStream.

Supporting platform:

.NET Standard 2(Windows/Linux/Mac OSX)

.NET Framework v4.5 and above

Usage

asp.net core compression provider

For compression provider sample, please check the Brotli.CompressionProvider.Sample folder.

Compress

using Brotli;

//the first parameter controls the quality(0-11)
var compressedData=inputBytes.CompressToBrotli(5,22);
//or
var compressedData=inputSteam.CompressToBrotli();
//or
inputStream.CompressToBrotli(destStream)

Decompress

var decompressedData=inputBytes.DecompressFromBrotli();
//or
var decompressedData=inputSteam.DecompressFromBrotli();
//or
inputSteam.DecompressFromBrotli(destStream);

Dynamic compress support(Legacy .NET Mvc)

protected void Application_PostAcquireRequestState(object sender, EventArgs e)
{
    var app = Context.ApplicationInstance;
    String acceptEncodings = app.Request.Headers.Get("Accept-Encoding");
    if (!String.IsNullOrEmpty(acceptEncodings))
    {
        System.IO.Stream baseStream = app.Response.Filter;
        acceptEncodings = acceptEncodings.ToLower();
        if (acceptEncodings.Contains("br") || acceptEncodings.Contains("brotli"))
        {
            app.Response.Filter = new Brotli.BrotliStream(baseStream, System.IO.Compression.CompressionMode.Compress);
            app.Response.AppendHeader("Content-Encoding", "br");
        }
        else if (acceptEncodings.Contains("deflate"))
        {
            app.Response.Filter = new System.IO.Compression.DeflateStream(baseStream, System.IO.Compression.CompressionMode.Compress);
            app.Response.AppendHeader("Content-Encoding", "deflate");
        }
        else if (acceptEncodings.Contains("gzip"))
        {
            app.Response.Filter = new System.IO.Compression.GZipStream(baseStream, System.IO.Compression.CompressionMode.Compress);
            app.Response.AppendHeader("Content-Encoding", "gzip");
        }
    }
}      	

Legacy version

For .net framework below v4.5, you can use version v2.0.2.4.

For .net framework below v3.5, you can use version v1.0.19.

Native

We have our own fork of brotli, with some minor changes for build reasons.

License

MIT