/// <summary>
/// Look up the IPEndpoints for the given identifiers and write them
/// back to the NameClient
/// </summary>
/// <param name="value">The lookup request event</param>
public override void OnNext(NamingLookupRequest value)
{
List <NameAssignment> assignments = _server.Lookup(value.Identifiers);
value.Link.Write(new NamingLookupResponse(assignments));
}