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A variable must exist before you can manipulate it. To create a new variable, see Create a Variable.

Extract value

In the Set Variable behavior, select the variable you want to modify.
In the Create Value From field, select Extract.
In the Get Data From field, select the location you want to extract the value from. See the Extract locations table for more details.
Depending on the location you chose, specify the parameters by which the edge servers generate the variable value.
Optionally, in the Operation field, apply a transformation.

Extract data from built-in variables

Built-in variables offer a basic set of information about a request. With the Set Variable behavior, you can extract additional information from that request, such as specific cookie or header names, location data, networks quality, or certificates.

Incorporate a built-in variable into a user-defined variable to extract additional information from that request.

Extract locations

Request header

Enter the HTTP header. The header name is case insensitive.

Response header

Enter the HTTP header. The header name is case insensitive.

Client certificate

Extract a value from the client-side SSL certificate.


Certificate field	Description
Version Number	The certificate's X509 version number.
Serial	The serial number in hex.
MD5 Fingerprint	The MD5 fingerprint, hex encoded. (This value is generated by the <> server based on the certificate's contents).
SH1 Fingerprint	The SHA1 fingerprint, hex encoded. (This value is generated by the <> server based on the certificate's contents).
Hashed Fingerprint	The fingerprint hashed based on the hashing algorithm in signature_algorithm, hex encoded. (This value is generated by the <> server based on the certificate's contents).
Issuer Name	The distinguished name field of the issuer (signer).
Subject Name	The distinguished name field of the user.
Not Before Date	The not-before date in YYYY/MM/DD HH:MI:SS ZONE format. The ZONE (such as GMT) will only be displayed if it's present in the certificate.
Not After Date	The not-after date in YYYY/MM/DD HH:MI:SS ZONE format. The ZONE (such as GMT) will only be displayed if it's present in the certificate
Certificate DER Formatted	The entire DER encoded certificate in hex. If the customer wants us to pass this to the origin, the other fields shouldn't be passed as they're all extracted from this value.
Certificate PEM Formatted	The certificate in PEM format base64 encoded as one single line without any new-line characters or carriage returns.
Cert PEM No Labels	The certificate in PEM format without the header and footer base64 encoded as one single line without any new-line characters or carriage returns.
Count	The number of client certificates received. Normally, this should be 1. If the client submits a chain, it will contain the number of all certificates received. If the client doesn't submit a certificate, its value is 0. (This value is generated by the <> server).
Status Message	A short message regarding the outcome of the certificate validation. If the certificate is missing, its value is "missing". If it passed validation, its value is "ok". Otherwise, it contains a very short description of the problem (such as "Certificate has expired", etc).
Key Length	Returns the size of the key in bits. For example, a 1024 bit RSA key returns "1024". This is helpful to determine FIPS-compliance of a certificate.

Request cookie

Enter the cookie name. This is case sensitive.

Edgescape data

The data extracted from Edgescape applies to the connecting IP address. This is the user's IP an edge server receives in a client request request, or the IP address of the last intermediate proxy, if applicable. If an.COMPANY_NICKNAME parent server receives a request forwarded by an .COMPANY_NICKNAME child server, this is the IP address of the child server. You can distinguish between both cases by setting the Request Type match criteria to CLIENT_REQ.

The Edgescape fields from which you can extract values include:


Country code Geographic Region Region Code County FIPS Network Throughput	City DMA Area Code Lattitude Longitude Network Type	Primary Metropolitan Statistical Area Metropolitan Statistical area Zip Code Timezone Continent As Number

Path component offset

Choose which value in the URL you want to use as the variable's value. You can use negative index (-1) to extract the right part of the path.

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In a path of /x/y/z/index.htmlPath component offset 1 is xPath component offset 2 is yPath component offset 3 is z.

Query string parameter

Enter the query string parameter name. This is case sensitive.