private static PreflightOperationBehavior RegisterPreflightOperation(OperationDescription operation)
{
OperationDescription preflightOperation = CreatePreflightOperation(operation);
preflightOperation.Behaviors.Add(new DataContractSerializerOperationBehavior(preflightOperation));
string originalUriTemplate = GetPreflightUriTemplate(operation);
var wia = new WebInvokeAttribute {
UriTemplate = originalUriTemplate, Method = "OPTIONS"
};
preflightOperation.Behaviors.Add(wia);
string originalMethod = GetHttpMethod(operation);
var preflightOperationBehavior = new PreflightOperationBehavior();
preflightOperationBehavior.AddAllowedMethod(originalMethod);
preflightOperation.Behaviors.Add(preflightOperationBehavior);
operation.DeclaringContract.Operations.Add(preflightOperation);
return(preflightOperationBehavior);
}
private static void RegisterPreflightOperations(ServiceEndpoint endpoint)
{
List <OperationDescription> corsEnabledOperations = endpoint.Contract.Operations
.Where(x => x.Behaviors.Find <CorsEnabledAttribute>() != null)
.ToList();
var uriTemplates = new Dictionary <string, PreflightOperationBehavior>(StringComparer.OrdinalIgnoreCase);
foreach (OperationDescription operation in corsEnabledOperations)
{
if (operation.Behaviors.Find <WebGetAttribute>() != null)
{
// no need to add preflight operation for GET requests
continue;
}
if (operation.IsOneWay)
{
// no support for 1-way messages
continue;
}
string originalUriTemplate = GetPreflightUriTemplate(operation);
string originalMethod = GetHttpMethod(operation);
if (uriTemplates.ContainsKey(originalUriTemplate))
{
// there is already an OPTIONS operation for this URI, we can reuse it
PreflightOperationBehavior operationBehavior = uriTemplates[originalUriTemplate];
operationBehavior.AddAllowedMethod(originalMethod);
}
else
{
PreflightOperationBehavior preflightOperationBehavior = RegisterPreflightOperation(operation);
uriTemplates.Add(originalUriTemplate, preflightOperationBehavior);
}
}
}
private static PreflightOperationBehavior RegisterPreflightOperation(OperationDescription operation)
{
OperationDescription preflightOperation = CreatePreflightOperation(operation);
preflightOperation.Behaviors.Add(new DataContractSerializerOperationBehavior(preflightOperation));
string originalUriTemplate = GetPreflightUriTemplate(operation);
var wia = new WebInvokeAttribute { UriTemplate = originalUriTemplate, Method = "OPTIONS" };
preflightOperation.Behaviors.Add(wia);
string originalMethod = GetHttpMethod(operation);
var preflightOperationBehavior = new PreflightOperationBehavior();
preflightOperationBehavior.AddAllowedMethod(originalMethod);
preflightOperation.Behaviors.Add(preflightOperationBehavior);
operation.DeclaringContract.Operations.Add(preflightOperation);
return preflightOperationBehavior;
}
