Cannot use Xamarin.iOS NSUrlSessionHandler

[Cheesebaron]

NEST/Elasticsearch.Net version:
6.3.1

Description of the problem including expected versus actual behavior:
When using Elasticsearch.Net you cannot provide a NSUrlSessionHandler in the CreateHttpClientHandler method override. NSUrlSessionHandler in Xamarin.iOS is a HttpMessageHandler, rather than HttpClientHandler.

Since it cannot be used, Xamarin.iOS apps can only use the managed, less stable HttpClientHandler.

Would it be possible to make the return type HttpMessageHandler for CreateHttpClientHandler in HttpConnection?

[Mpdreamz]

Thanks for reporting this @Cheesebaron 👍

We wont be able to change for 7.0 due to backwards compatibility issues. Is copying the sourcce for HttpConnection in the mean time a workable (albeit tedious) solution?

[Cheesebaron]

I think that could work. Not pretty at all though.

I don't see why this should affect any backwards compatibility? HttpClientHandler inherits from HttpMessageHandler, so changing the return type on CreateHttpClientHandler would not change anything.

[russcam]

I've added #3648 to address this in 7.0.0

[russcam]

This is now merged into 7.x in #3648