Windows Authentication with HttpClient - Rick Strahl's Web Log Step 1: Add the Polly nuget pachage Microsoft.Extensions.Http.Polly. SSL Remote Certificate Chain Errors Error in .NET Core | by Prasad ... Using the HttpClientFactory to request a HttpClient, creates a new instance each time, meaning no need to worry about mutating its state. Typically, the last handler in the pipeline is the HttpClientHandler, which communicates directly with the network. So the HttpClientFactory comes with a built in HttpClientHandler pool and manages all of their lifetimes, and rotates them periodically to keep you from using stale DNS records. However, client configuration, such as an API endpoint URL, can be defined in one place within the Startup class. // Create the retry policy we want var retryPolicy = HttpPolicyExtensions .HandleTransientHttpError() // HttpRequestException, 5XX and 408 .WaitAndRetryAsync(3 . Blazor, HttpClientFactory, and Web API - C# Tutorials Blog Handlers can modify the behavior of the HttpClient. If none is specified, an HttpClientHandler is used; this handler sends requests directly to the network. I've updated the code below to reflect this. To add a header per request, use HttpRequestMessage.Headers + HttpClient.SendAsync (), like this: First, it's best practice to use a single HttpClient instance for multiple requests. You may override that behaviour. NSubstitute is calling the specific method and . class Program {static async System.Threading.Tasks.Task Main(string[] args) . I tried to add a proxy setting but couldn't manage to make it work. runtime/HttpClientHandler.cs at main · dotnet/runtime · GitHub Creating HttpClient (C#) Instances With IHttpClientFactory This class expedites the development process in accessing data from a Web API, and allows for customizing the client handlers when the need arises. Alleviate stale DNS records (by default HttpClient caches DNS records for its lifetime) Easily resolve an HttpClient instance . Later in the series, you will add IdentityServer4 authentication to protect the API and authorize the client web app. 1 2 3 4 5 6 7 public static IHostBuilder CreateHostBuilder (string[] args) => Host.CreateDefaultBuilder (args) Optimally Configuring ASP.NET Core HttpClientFactory Username, options. The HttpClient will then send the certificate with each request. It calls the main CreateClient (string name) method using the Options.DefaultName value. new HttpClientHandler { Credentials = new NetworkCredential ( options.
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