Basic authentication with service stack
Seems like you're having the same problem as this poster: ServiceStack Web Service with Basic Authentication and SetCredentials He managed to get authentication working with the following code:
class Program{ const string BaseUrl = "http://localhost:8088/api"; static void Main(string[] args) { var restClient = new JsonServiceClient(BaseUrl); restClient.SetCredentials("john", "test"); restClient.AlwaysSendBasicAuthHeader = true; HelloResponse response = restClient.Get<HelloResponse>("/hello/Leniel"); Console.WriteLine(response.Result); }}//Response DTO//Follows naming conventionpublic class HelloResponse{ public string Result { get; set; }}I recommend reading the entire question and answer, as it includes detailed explanations.