/// <summary>
/// Creates what might be considered a good "default" server factory, if possible,
/// or <c>null</c> if no good default was possible. A <c>null</c> value could be returned,
/// for example, if a user opted to remove all implementations of <see cref="IServer"/> and
/// the associated <see cref="IServerFactory"/> for security reasons.
/// </summary>
public static IServerFactory CreateDefaultServerFactoryOrNull(IExceptionContext ectx)
{
Contracts.CheckValue(ectx, nameof(ectx));
// REVIEW: There should be a better way. There currently isn't,
// but there should be. This is pretty horrifying, but it is preferable to
// the alternative of having core components depend on an actual server
// implementation, since we want those to be removable because of security
// concerns in certain environments (since not everyone will be wild about
// web servers popping up everywhere).
var cat = ModuleCatalog.CreateInstance(ectx);
ModuleCatalog.ComponentInfo component;
if (!cat.TryFindComponent(typeof(IServerFactory), "mini", out component))
{
return(null);
}
IServerFactory factory = (IServerFactory)Activator.CreateInstance(component.ArgumentType);
var field = factory.GetType().GetField("Port");
if (field?.FieldType != typeof(int))
{
return(null);
}
field.SetValue(factory, 12345);
return(factory);
}
