HttpListener.Start() AccessDenied error on Vista

Question

Running this code as a regular user throws HttpListenerException (access denied). Snippet runs ok as an administator

class Program
{
    static void Main(st         


        

Answer 1

Is that URI already registered on the system?

http://msdn.microsoft.com/en-us/library/system.net.httplistenerexception.aspx says that would be one cause.

Answer 2

I do not understand why but here it is. It seems that the cause is that my network card is configured with 2 IPs.

if in the code i specify one of the ips (like i did in question above)

listener.Prefixes.Add("http://myip1:8080/app/");

then to avoid exception i need to register it with IP-bound weak wildcard

netsh http add urlacl url=http://myip1:8080/app user=domain\user

however if i add prefix with the strong wildcard (plus sign)

listener.Prefixes.Add("http://+:8080/app/");

and register with the same wild card

netsh http add urlacl url=http://+:8080/app user=domain\user

then there is no error and i can access my app from both ip.