Get current http context user in .Net Core 2.0 WebAPI controller

Question

I have a .Net Core 2 WebAPI controller and need to retrieve the current user Id in either it's constructor or one of the routes.

[Route("api/[controller]")]
public class ConfigController : Controller
{
    private readonly IConfiguration _configuration;

    public ConfigController(IConfiguration iConfig)
    {
        _configuration = iConfig;
    }

    [HttpGet("[action]")]
    public AppSettings GetAppSettings()
    {
        var appSettings = new AppSettings
        {
            //Other settings
            CurrentUser = WindowsIdentity.GetCurrent().Name
        };
        return appSettings;
    }
}

The above WindowsIdentity.GetCurrent().Name won't give me what I need. I figured I will need an equivalent of the .Net framework's System.Web.HttpContext.Current.User.Identity.Name

Any idea? Please note this is a .Net Core 2.0 WebAPI, please don't suggest solutions for the regular .net controllers.

Answer 1

The ControllerBase.User will hold the principle of the currently authenticated user for the request and will only be available in the scope of the executing action, not in the constructor.

[HttpGet("[action]")]
public AppSettings GetAppSettings() {
    var user = this.User;
    var appSettings = new AppSettings {
        //Other settings
        CurrentUser = user.Identity.Name
    };
    return appSettings;
}