protected override Task <HttpResponseMessage> SendAsync(HttpRequestMessage request, CancellationToken cancellationToken) { var authorizationHeader = _user.ObterContext().Request.Headers["Authorization"]; if (!string.IsNullOrEmpty(authorizationHeader)) { request.Headers.Add("Authorization", new List <string>() { authorizationHeader }); } var token = _user.ObterUserToken(); if (token != null) { request.Headers.Authorization = new AuthenticationHeaderValue("Bearer", token); } return(base.SendAsync(request, cancellationToken)); }