PreCompressStatic 1.0.0

PreCompressStatic

Compress once by demand if required and send preCompressed static files to the browser

How to use

Add app.UsePreCompressStaticFiles() instead of app.UseStaticFiles() in Startup.Configure section

namespace Example
{
    public class Startup
    {
        public void ConfigureServices(IServiceCollection services)
        {
            services.AddHttpContextAccessor(); // it's important to add
        }

        public void Configure(IApplicationBuilder app)
        {
            app.UseDeveloperExceptionPage();
            app.UseRouting();

            app.UsePreCompressStaticFiles(); // add this instead of app.UseStaticFiles();

            app.UseEndpoints(e => { e.MapFallbackToFile("index.html"); });
        }
    }
}

Rules

• UI part can be compressed during the building (for example with webpack). Compressed files must end with .br & .gzip (for example main.js.br)
• If browser supports Brotli or Gzip compression (Accept-Encoding header) then the helper looks for {file}.br or {file}.gzip
• If files missed the helper compresses requested file, saves it in the same folder and returns compressed result
• Compression happens only once per file and only if fileSize < options.MinSizeKb (8kb by default)
• Middleware is highly optimized for performance and compresses only once if it's really makes sense

Example

An example can be found in the Example directory.

Acknowledgements

This solution is based on @neyromant from the following issue https://github.com/aspnet/Home/issues/1584#issuecomment-227455026.