public override void Validate(object value)
{
HttpMessageHandlerFactoryElement configElement = (HttpMessageHandlerFactoryElement)value;
if (!string.IsNullOrWhiteSpace(configElement.Type) && configElement.Handlers != null && configElement.Handlers.Count > 0)
{
throw FxTrace.Exception.AsError(new ConfigurationErrorsException(SR.GetString(SR.HttpMessageHandlerFactoryConfigInvalid_WithBothTypeAndHandlerList, ConfigurationStrings.MessageHandlerFactory, ConfigurationStrings.Type, ConfigurationStrings.Handlers)));
}
}
internal static HttpMessageHandlerFactory CreateFromConfigurationElement(HttpMessageHandlerFactoryElement configElement)
{
Fx.Assert(configElement != null, "configElement should not be null.");
if (!string.IsNullOrWhiteSpace(configElement.Type))
{
if (configElement.Handlers != null && configElement.Handlers.Count > 0)
{
throw FxTrace.Exception.AsError(new ConfigurationErrorsException(SR.GetString(SR.HttpMessageHandlerFactoryConfigInvalid_WithBothTypeAndHandlerList, ConfigurationStrings.MessageHandlerFactory, ConfigurationStrings.Type, ConfigurationStrings.Handlers)));
}
Type factoryType = HttpChannelUtilities.GetTypeFromAssembliesInCurrentDomain(configElement.Type);
if (factoryType == null)
{
throw FxTrace.Exception.AsError(new ConfigurationErrorsException(SR.GetString(SR.CanNotLoadTypeGotFromConfig, configElement.Type)));
}
if (!typeof(HttpMessageHandlerFactory).IsAssignableFrom(factoryType) || factoryType.IsAbstract)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ConfigurationErrorsException(
SR.GetString(
SR.WebSocketElementConfigInvalidHttpMessageHandlerFactoryType,
typeof(HttpMessageHandlerFactory).Name,
factoryType,
typeof(HttpMessageHandlerFactory).AssemblyQualifiedName)));
}
return Activator.CreateInstance(factoryType) as HttpMessageHandlerFactory;
}
else
{
if (configElement.Handlers == null || configElement.Handlers.Count == 0)
{
return null;
}
Type[] handlerList = new Type[configElement.Handlers.Count];
for (int i = 0; i < configElement.Handlers.Count; i++)
{
Type handlerType = HttpChannelUtilities.GetTypeFromAssembliesInCurrentDomain(configElement.Handlers[i].Type);
if (handlerType == null)
{
throw FxTrace.Exception.AsError(new ConfigurationErrorsException(SR.GetString(SR.CanNotLoadTypeGotFromConfig, configElement.Handlers[i].Type)));
}
handlerList[i] = handlerType;
}
try
{
return new HttpMessageHandlerFactory(handlerList);
}
catch (ArgumentException ex)
{
throw FxTrace.Exception.AsError(new ConfigurationErrorsException(ex.Message, ex));
}
}
}