AWS SDK Version 3 for .NET
API Reference

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Container for the parameters to the UpdateSizeConstraintSet operation. Inserts or deletes SizeConstraint objects (filters) in a SizeConstraintSet. For each SizeConstraint object, you specify the following values:

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:

  1. Create a SizeConstraintSet. For more information, see CreateSizeConstraintSet.

  2. Use GetChangeToken to get the change token that you provide in the ChangeToken parameter of an UpdateSizeConstraintSet request.

  3. 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.

Inheritance Hierarchy


Namespace: Amazon.WAF.Model
Assembly: AWSSDK.WAF.dll
Version: 3.x.y.z


public class UpdateSizeConstraintSetRequest : AmazonWAFRequest

The UpdateSizeConstraintSetRequest type exposes the following members



Public Property ChangeToken System.String

Gets and sets the property ChangeToken.

The value returned by the most recent call to GetChangeToken.

Public Property SizeConstraintSetId System.String

Gets and sets the property SizeConstraintSetId.

The SizeConstraintSetId of the SizeConstraintSet that you want to update. SizeConstraintSetId is returned by CreateSizeConstraintSet and by ListSizeConstraintSets.

Public Property Updates System.Collections.Generic.List<Amazon.WAF.Model.SizeConstraintSetUpdate>

Gets and sets the property Updates.

An array of SizeConstraintSetUpdate objects that you want to insert into or delete from a SizeConstraintSet. For more information, see the applicable data types:


The following example deletes a SizeConstraint object (filters) in a size constraint set with the ID example1ds3t-46da-4fdb-b8d5-abc321j569j5.

To update a size constraint set

var response = client.UpdateSizeConstraintSet(new UpdateSizeConstraintSetRequest 
    ChangeToken = "abcd12f2-46da-4fdb-b8d5-fbd4c466928f",
    SizeConstraintSetId = "example1ds3t-46da-4fdb-b8d5-abc321j569j5",
    Updates = new List {
        new SizeConstraintSetUpdate {
            Action = "DELETE",
            SizeConstraint = new SizeConstraint {
                ComparisonOperator = "GT",
                FieldToMatch = new FieldToMatch { Type = "QUERY_STRING" },
                Size = 0,
                TextTransformation = "NONE"

string changeToken = response.ChangeToken;


Version Information

.NET Standard:
Supported in: 1.3

.NET Framework:
Supported in: 4.5, 4.0, 3.5

Portable Class Library:
Supported in: Windows Store Apps
Supported in: Windows Phone 8.1
Supported in: Xamarin Android
Supported in: Xamarin iOS (Unified)
Supported in: Xamarin.Forms