HttpClient

Providing your own HttpClient, supporting Http proxy and customization of user agent headers

We understand that there are cases where you want fine grained control on the Http proxy for instance, which we had not been able to provide you at all (on .NET core), or in a limited way (.NET framework). Also, ASP.NET Core has some very efficient ways of pooling the HttpClient instance, and MSAL.NET clearly did not benefit from it (for details see Use HttpClientFactory to implement resilient HTTP requests)

IMsalHttpClientFactory httpClientFactory = new MyHttpClientFactory();

var pca = PublicClientApplicationBuilder.Create(MsalTestConstants.ClientId) 
                                        .WithHttpClientFactory(httpClientFactory)
                                        .Build();

HttpClient and Xamarin iOS

When using Xamarin iOS, it is recommended to create an HttpClient that explicitly uses the NSURLSession-based handler for iOS 7 and newer. MSAL.NET will automatically create an HttpClient that uses NSURLSessionHandler for iOS 7 and newer. See the Xamarin iOS documentation for HttpClient for more information.