CODEWITHSUNDEEP
asp.net-web-apihttpclient
Mori
Mori

Reputation: 2574

Set HttpMessageHandler to an instance of HttpClient after initialization

I want to share an instance of HttpClient between different requests and it seems fortunately this class is safe to be used cuncurrently.

But I need to set HttpMessageHandler for each individual request since they may have different ClientCertificates. Apparently this can only be done via constructor and not available after initialization!

Any idea how to set this property after initialization? or a workaround?

Upvotes: 5

Views: 6142

Answers (2)

Francisco Vilches
Francisco Vilches

Reputation: 3738

Not exactly setting it after instantiation, but would this approach work in your case?

using System.Net;
using System.Net.Http;
using System.Net.Http.Headers;


public abstract class MyHttpClient : HttpClient
{
    protected MyHttpClient() : base(new HttpClientHandler { AutomaticDecompression = DecompressionMethods.GZip | DecompressionMethods.Deflate })
    {
        DefaultRequestHeaders.Accept.Add(MediaTypeWithQualityHeaderValue.Parse("application/json"));
        DefaultRequestHeaders.AcceptCharset.Add(StringWithQualityHeaderValue.Parse("UTF-8"));
        DefaultRequestHeaders.AcceptEncoding.Add(StringWithQualityHeaderValue.Parse("gzip"));
    }
}

Upvotes: 1

tlt
tlt

Reputation: 15221

You might want to use WebRequestHandler as a handler added to HttpClient constructor, keep its reference and then change certificates on per request basis. this link might help: https://blogs.msdn.microsoft.com/henrikn/2012/08/07/httpclient-httpclienthandler-and-webrequesthandler-explained/

Upvotes: 3

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