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Showing content from https://docs.aws.amazon.com/sdkforruby/api/Aws/WAFV2/Types/SizeConstraintStatement.html below:

SizeConstraintStatement — AWS SDK for Ruby V2

You are viewing documentation for version 2 of the AWS SDK for Ruby. Version 3 documentation can be found here.

Inherits:

Struct

• Object
• Struct
• Aws::WAFV2::Types::SizeConstraintStatement

show all

Defined in:

(unknown)

When passing SizeConstraintStatement as input to an Aws::Client method, you can use a vanilla Hash:

{
  field_to_match: {     single_header: {
      name: "FieldToMatchData",     },
    single_query_argument: {
      name: "FieldToMatchData",     },
    all_query_arguments: {
    },
    uri_path: {
    },
    query_string: {
    },
    body: {
    },
    method: {
    },
  },
  comparison_operator: "EQ",   size: 1,   text_transformations: [     {
      priority: 1,       type: "NONE",     },
  ],
}

This is the latest version of AWS WAF, named AWS WAFV2, released in November, 2019. For information, including how to migrate your AWS WAF resources from the prior release, see the AWS WAF Developer Guide.

A rule statement that compares a number of bytes against the size of a request component, using a comparison operator, such as greater than (>) or less than (<). For example, you can use a size constraint statement to look for query strings that are longer than 100 bytes.

If you configure AWS WAF to inspect the request body, AWS WAF inspects only the first 8192 bytes (8 KB). If the request body for your web requests never exceeds 8192 bytes, you can create a size constraint condition and block requests that have a request body greater than 8192 bytes.

If you choose URI for the value of Part of the request to filter on, the slash (/) in the URI counts as one character. For example, the URI /logo.jpg is nine characters long.

Returned by:

• Aws::WAFV2::Types::Statement#size_constraint_statement

• #comparison_operator ⇒ String

  The operator to use to compare the request part to the size setting.

• #field_to_match ⇒ Types::FieldToMatch

  The part of a web request that you want AWS WAF to inspect.

• #size ⇒ Integer

  The size, in byte, to compare to the request part, after any transformations.

• #text_transformations ⇒ Array<Types::TextTransformation>

  Text transformations eliminate some of the unusual formatting that attackers use in web requests in an effort to bypass detection.

The operator to use to compare the request part to the size setting.

Possible values:

• EQ
• NE
• LE
• LT
• GE
• GT

The size, in byte, to compare to the request part, after any transformations.

Text transformations eliminate some of the unusual formatting that attackers use in web requests in an effort to bypass detection. If you specify one or more transformations in a rule statement, AWS WAF performs all transformations on the content of the request component identified by FieldToMatch, starting from the lowest priority setting, before inspecting the content for a match.

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