I'd like to know whether the cross platform socket, .NET socket, support backgrounding for VOIP on iOS. I know the native socket, NSStream, can do that. But I want to build my app framework cross platform. That's the reason why I want to use .NET socket instead of native one.
I evaluate Xamarin. The customer success specialist contacts me. I ask whether Xamarin meets my need for this feature of my app. He told me to pay, or he won't tell me the answer. He tell me maybe I can ask here. So I ask here.