Inserts or deletes
SizeConstraint objects (filters) in a
SizeConstraintSet. For each
SizeConstraint object, you specify the following values:
-
Whether to insert or delete the object from the array. If you want to change a SizeConstraintSetUpdate object, you delete the existing object and add a new one.
-
The part of a web request that you want AWS WAF to evaluate, such as the length of a query string or the length of the User-Agent header.
-
Whether to perform any transformations on the request, such as converting it to lowercase, before checking its length. Note that transformations of the request body are not supported because the AWS resource forwards only the first 8192 bytes of your request to AWS WAF.
-
A ComparisonOperator used for evaluating the selected part of the request against the specified Size, such as equals, greater than, less than, and so on.
-
The length, in bytes, that you want AWS WAF to watch for in selected part of the request. The length is computed after applying the transformation.
For example, you can add a SizeConstraintSetUpdate object that matches web requests in which the length of the User-Agent header is greater than 100 bytes. You can then configure AWS WAF to block those requests.
To create and configure a SizeConstraintSet, perform the following steps:
-
Create a SizeConstraintSet. For more information, see CreateSizeConstraintSet.
-
Use GetChangeToken to get the change token that you provide in the ChangeToken parameter of an UpdateSizeConstraintSet request.
-
Submit an UpdateSizeConstraintSet request to specify the part of the request that you want AWS WAF to inspect (for example, the header or the URI) and the value that you want AWS WAF to watch for.
For more information about how to use the AWS WAF API to allow or block HTTP requests, see the AWS WAF Developer Guide.
/// The operation failed because of a system problem, even though the request was valid.
/// Retry your request.
///
/// The operation failed because you tried to create, update, or delete an object by using
/// an invalid account identifier.
///
/// The operation failed because there was nothing to do. For example:
///
///
-
///
/// You tried to remove a
Rule from a WebACL, but the Rule
/// isn't in the specified WebACL.
///
/// -
///
/// You tried to remove an IP address from an
IPSet, but the IP address isn't
/// in the specified IPSet.
///
/// -
///
/// You tried to remove a
ByteMatchTuple from a ByteMatchSet,
/// but the ByteMatchTuple isn't in the specified WebACL.
///
/// -
///
/// You tried to add a
Rule to a WebACL, but the Rule
/// already exists in the specified WebACL.
///
/// -
///
/// You tried to add an IP address to an
IPSet, but the IP address already
/// exists in the specified IPSet.
///
/// -
///
/// You tried to add a
ByteMatchTuple to a ByteMatchSet, but
/// the ByteMatchTuple already exists in the specified WebACL.
///
///
///
/// The operation failed because AWS WAF didn't recognize a parameter in the request.
/// For example:
///
///
-
///
/// You specified an invalid parameter name.
///
///
-
///
/// You specified an invalid value.
///
///
-
///
/// You tried to update an object (
ByteMatchSet, IPSet, Rule,
/// or WebACL) using an action other than INSERT or DELETE.
///
/// -
///
/// You tried to create a
WebACL with a DefaultAction Type
/// other than ALLOW, BLOCK, or COUNT.
///
/// -
///
/// You tried to update a
WebACL with a WafAction Type
/// other than ALLOW, BLOCK, or COUNT.
///
/// -
///
/// You tried to update a
ByteMatchSet with a FieldToMatch Type
/// other than HEADER, QUERY_STRING, or URI.
///
/// -
///
/// You tried to update a
ByteMatchSet with a Field of HEADER
/// but no value for Data.
///
/// -
///
/// Your request references an ARN that is malformed, or corresponds to a resource with
/// which a web ACL cannot be associated.
///
///
///
/// The operation exceeds a resource limit, for example, the maximum number of
WebACL
/// objects that you can create for an AWS account. For more information, see
Limits
/// in the
AWS WAF Developer Guide.
///
/// The operation failed because you tried to add an object to or delete an object from
/// another object that doesn't exist. For example:
///
///
-
///
/// You tried to add a
Rule to or delete a Rule from a WebACL
/// that doesn't exist.
///
/// -
///
/// You tried to add a
ByteMatchSet to or delete a ByteMatchSet
/// from a Rule that doesn't exist.
///
/// -
///
/// You tried to add an IP address to or delete an IP address from an
IPSet
/// that doesn't exist.
///
/// -
///
/// You tried to add a
ByteMatchTuple to or delete a ByteMatchTuple
/// from a ByteMatchSet that doesn't exist.
///
///
///
/// The operation failed because the referenced object doesn't exist.
///
/// The operation failed because you tried to delete an object that is still in use. For
/// example:
///
///
-
///
/// You tried to delete a
ByteMatchSet that is still referenced by a Rule.
///
/// -
///
/// You tried to delete a
Rule that is still referenced by a WebACL.
///
///
///
/// The operation failed because you tried to create, update, or delete an object by using
/// a change token that has already been used.
///
