private void DetachAuthenticationhandler(KestrelAuthHandler handler)
{
var auth = handler.HttpContext.Features.Get <IHttpAuthenticationFeature>();
if (auth != null)
{
auth.Handler = handler.PriorHandler;
}
}
private void AttachAuthenticationHandler(KestrelAuthHandler handler)
{
var auth = handler.HttpContext.Features.Get <IHttpAuthenticationFeature>();
if (auth == null)
{
auth = new HttpAuthenticationFeature();
handler.HttpContext.Features.Set(auth);
}
handler.PriorHandler = auth.Handler;
auth.Handler = handler;
}
public async Task Invoke(HttpContext context)
{
var existingPrincipal = context.Features.Get <IHttpAuthenticationFeature>()?.User;
var handler = new KestrelAuthHandler(context, existingPrincipal);
AttachAuthenticationHandler(handler);
try
{
await _next(context);
}
finally
{
DetachAuthenticationhandler(handler);
}
}
