Question: How to use HttpClientHandler with IHttpClientFactory about httpclientfactory HOT 9 CLOSED

@davidfowl To clarify, I see the HttpClientHandler being created at configuration time. At this point in the application (startup), we do not have the necessary information.

Each time we want to use the HttpClient, we load a certificate (perhaps based on a fingerprint), with the intention of getting an HttpClientHandler that uses that particular certificate. How can we achieve this?

from httpclientfactory.

Great! glad we could help

from httpclientfactory.

Looks like you call ConfigurePrimaryHttpMessageHandler() as part of using the HttpClient builders:

from httpclientfactory.

Yes, @martincostello is right. You can configure the primary handler used by the factory for each named client this way.

from httpclientfactory.

@martincostello @rynowak Thanks a lot for pointing me in the right direction. I will test this tomorrow, but the following should do the trick.

services.AddHttpClient("named", c =>
{
    c.BaseAddress = new Uri("TODO");
    c.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
    c.DefaultRequestHeaders.CacheControl = new CacheControlHeaderValue
    {
        NoCache = true,
        NoStore = true,
        MaxAge = new TimeSpan(0),
        MustRevalidate = true
    };
}).ConfigurePrimaryHttpMessageHandler(() => new HttpClientHandler
{
    AllowAutoRedirect = false,
    AutomaticDecompression = DecompressionMethods.Deflate | DecompressionMethods.GZip
});

from httpclientfactory.

What if the handler must specify client certificates that are determined at runtime?

from httpclientfactory.

What’s the complication there?

from httpclientfactory.

@Timovzl I'm facing the same problem. I was expecting an overload of the AddHttpClient method providing the IServiceProvider instance, as it is in other circumstances.
Did you find an alternative solution?

from httpclientfactory.

Please open a new issue rather than commenting on a closed issue.

from httpclientfactory.