If someone googles through this thread (it’s the first result) and just wants to copy paste a quick http request without butchering your code with all of that above, here it is:
auto request = FHttpModule::Get().CreateRequest();
request->SetURL(FString("http://google.com"));
request->OnProcessRequestComplete().BindLambda([](FHttpRequestPtr request, FHttpResponsePtr response, bool success) {
});
request->ProcessRequest();