public async Task <ApplicationSessionContext> GetServiceTicket(RequestServiceTicket rst, CancellationToken cancellation)
{
rst.S4uTarget = null;
rst.S4uTicket = this.krbApReq.EncryptedTicket;
rst.KdcOptions |= KdcOptions.CNameInAdditionalTicket;
bool retried = false;
while (true)
{
try
{
return(await client.GetServiceTicket(rst, cancellation));
}
catch (InvalidOperationException)
{
if (retried)
{
break;
}
await client.Authenticate(this.credential);
retried = true;
}
}
return(null);
}
/// <summary>
/// Request a service ticket from a KDC using TGS-REQ
/// </summary>
/// <param name="rst">The parameters of the request</param>
/// <param name="cancellation">A cancellation token to exit the request early</param>
/// <returns>Returns a <see cref="ApplicationSessionContext"/> containing the service ticket</returns>
public async Task <ApplicationSessionContext> GetDelegatedServiceTicket(
RequestServiceTicket rst,
CancellationToken cancellation = default
)
{
if (this.s4uProviderFactory == null)
{
throw new InvalidOperationException("S4U is not configured for this identity");
}
var provider = this.s4uProviderFactory.CreateProvider(this.krbApReq);
return(await provider.GetServiceTicket(rst, cancellation));
}