HttpClientHandler / HttpClient Memory Leak

Question

I have anywhere from 10-150 long living class objects that call methods performing simple HTTPS API calls using HttpClient. Example of a PUT call:

Answer 1

As Matt Clark mentioned, the default HttpClient leaks when you use it as a short-lived object and create new HttpClients per request.

As a workaround, I was able to keep using HttpClient as a short-lived object by using the following Nuget package instead of the built-in System.Net.Http assembly: https://www.nuget.org/packages/HttpClient

Not sure what the origin of this package is, however, as soon as I referenced it the memory leak disappeared. Make sure that you remove the reference to the built-in .NET System.Net.Http library and use the Nuget package instead.