Changing ApiKey and DataCenter does not change request URLs

I have a .NET Core application that iterates over multiple API Keys that exist in separate data centers. When switching between API keys the underlying data center component of request URLs does not change. The code does not re-use the same MailChimpManager, an entirely new copy is instantiated for each API Key used.

Having looked at the code for BaseLogic.cs my guess is has something to do with the use of the static IHttpClientFactory.

Whilst I don’t pretend to fully follow the code, on line 40 the call:

client.BaseAddress = new Uri(GetBaseAddress());               

Would appear to run when _httpClientFactory is instantiated and therefore the initial values of the base URL would persist for the lifetime of the application.

[Uffman]

I have the same problem. Reverted to preview version 4.2.1 because of this

[Uffman]

I upgraded today and so far so good 😉