Gzip compression doesn't work in Web Api Core

Question

User-1350042179 posted

Hi

I applied compression in web api core, but I see the same result with and without compression:

I followed the link:

https://hanssens.com/recipes/enabling-gzip-compression-in-a-dotnet-core-webapi/

Answer 1

User-474980206 posted

as you don't show the response headers, we can not tell if it worked. check that the gzip accept header was sent, also check the content-encoding response header (should be gzip)

also check that you are not using http/2 which has compression built in and does not use gzip.

Answer 2

User475983607 posted

Please do not make the community guess what your doing.  At least share your code, tell us what version of Core you are targeting, explain how you are testing, and the steps to reproduce this behavior..

https://docs.microsoft.com/en-us/aspnet/core/performance/response-compression?view=aspnetcore-3.1

Answer 3

User-1350042179 posted

Hi

This is the response...

I don't see content-encoding: gzip in the response.

Answer 4

User-719153870 posted

Hi neoaguil17,

The link article you provied, missed a very important thing for your situation that you have to set EnableForHttps to be true.

        public void ConfigureServices(IServiceCollection services)
        {
            // Configure Compression level
            services.Configure<GzipCompressionProviderOptions>(options => options.Level = CompressionLevel.Optimal);

            // Add Response compression services
            services.AddResponseCompression(options =>
            {
                options.EnableForHttps = true;
                options.Providers.Add<GzipCompressionProvider>();
            });
            services.AddControllers();

        }

Best Regard,

Yang Shen

Answer 5

User-1350042179 posted

Hi

I did it but the response has the same time and size.

Answer 6

User-1350042179 posted

Hi

I identify that gzip compression doesn't work in iis express, it only works in IIS onpremise or azure appservice.