Netscaler expression evaluator

This article describes how to create an expression to retrieve information from one HTTP header and compare it with the value of another HTTP request header. Consider that you want to compare the URL in the Referrer and the User-Agent for mobile versions of a website before responding to the client request. For example, a sample website www. To create an expression to retrieve information from one HTTP header and compare it with the value of another HTTP request header, complete the following procedure:.

VALUE 0. In the Advanced Expression Evaluato r dialog box, you can notice that the NetScaler returns "true" or "false" depending on the success of the match. Open a ticket online for technical assistance with troubleshooting, break-fix requests, and other product issues.

Customers who viewed this article also viewed. Background Consider that you want to compare the URL in the Referrer and the User-Agent for mobile versions of a website before responding to the client request.

Select Advanced Expression Evaluator from the Tools section. Was this page helpful? Thank you! Sorry to hear that.

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Please provide article feedback. Article feedback You rated this page as You rated this page as. Please provide article feedback Feel free to give us additional feedback! What can we do to improve this page? Comment field is required. Name Name is required. Email Email address is required. Close Submit. Search Citrix Discussions. Get Additional Support. Open a Case Open a ticket online for technical assistance with troubleshooting, break-fix requests, and other product issues.

Open a Case Online. Share this page.Asked by joshua. I have started by simply create a rewrite policy with expression "true" as I am merely trying to get the re-write to work, will optimise later. It is as if the HTTP. This is the first time this has happened to us. Maybe this? Have not encountered this before. I have been spending weeks to figure it out why the Rewrite Res did not work in one of our websites. You will be able to leave a comment after signing in.

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Learn more. Follow, to receive updates on this topic. Posted December 6, Share this post Link to post. Recommended Posts. Mark this reply as best answer, if it answered your question. Upvote if you found this answer helpful or interesting. Carl Stalhood 12, Thankyou Carl. This has resolved the issue. Posted January 26, Thank you Carl and Joshua, I have been spending weeks to figure it out why the Rewrite Res did not work in one of our websites.

Thanks again :. Please sign in to comment You will be able to leave a comment after signing in Sign In Now.NetScaler Action Analytics. Configure a selector. Configure a stream identifier. View statistics. Group records on attribute values.

netscaler expression evaluator

Clear stream session. Configure policy for optimizing traffic. How to limit bandwidth consumption for user or client device. AppExpert Applications and Templates. How AppExpert application works. Get started with AppExpert. Download an application template. Import an application template. Verify and test application configuration. Customize AppExpert Configuration. Configure public endpoints. Configure services and service groups for an application unit. Create application units. Configure application unit rules.

Configure policies for application units. Configure application units. Configure public endpoints for an application. Specify the order of evaluation of application units. Configure persistency groups for application units.

View AppExpert applications and configure entities by using application visualizer. Configure user authentication. Monitor NetScaler statistics. Delete an AppExpert application. Configure application authentication, authorization, and auditing. Set up a custom NetScaler application. Creating and Managing Template Files. Creating Variables in Application Templates.

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Uploading and Downloading Template Files. Deleting a Template File. NetScaler Gateway Applications. Adding Intranet Subnets. Adding Other Resources. Configuring Authorization Policies.NetScaler Action Analytics. Configure a selector. Configure a stream identifier. View statistics.

Group records on attribute values. Clear stream session. Configure policy for optimizing traffic. How to limit bandwidth consumption for user or client device. AppExpert Applications and Templates.

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How AppExpert application works. Get started with AppExpert. Download an application template. Import an application template. Verify and test application configuration. Customize AppExpert Configuration. Configure public endpoints.

Configure services and service groups for an application unit. Create application units. Configure application unit rules. Configure policies for application units. Configure application units. Configure public endpoints for an application.

netscaler expression evaluator

Specify the order of evaluation of application units. Configure persistency groups for application units. View AppExpert applications and configure entities by using application visualizer. Configure user authentication. Monitor NetScaler statistics. Delete an AppExpert application. Configure application authentication, authorization, and auditing.NetScaler Action Analytics. Configure a selector. Configure a stream identifier.

View statistics. Group records on attribute values. Clear stream session. Configure policy for optimizing traffic. How to limit bandwidth consumption for user or client device. AppExpert Applications and Templates. How AppExpert application works. Get started with AppExpert. Download an application template. Import an application template. Verify and test application configuration.

Customize AppExpert Configuration. Configure public endpoints. Configure services and service groups for an application unit. Create application units. Configure application unit rules. Configure policies for application units. Configure application units.NetScaler Action Analytics. Configure a selector. Configure a stream identifier. View statistics. Group records on attribute values. Clear stream session. Configure policy for optimizing traffic. How to limit bandwidth consumption for user or client device.

AppExpert Applications and Templates. How AppExpert application works. Get started with AppExpert. Download an application template.

Import an application template. Verify and test application configuration. Customize AppExpert Configuration.

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Configure public endpoints. Configure services and service groups for an application unit. Create application units. Configure application unit rules.

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Configure policies for application units. Configure application units. Configure public endpoints for an application. Specify the order of evaluation of application units.

Configure persistency groups for application units.

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View AppExpert applications and configure entities by using application visualizer. Configure user authentication.Constructing an expression with each click. Use this approach when you want to know the prefix in which you can use the expression, while getting details of the expression.

Advanced Policy Expressions for URL Evaluation

Start by clicking one of the prefixes mentioned in the "starting prefixes" table. You will get a list of expressions that can be used with the selected prefix. From this list, click the return type of the required expression and continue this process till you have constructed the entire expression.

netscaler expression evaluator

Finding an expression of a specific type. Use this approach when you want to find an expression of a particular type. For example, if you want to see a list of all the expressions that can be used on text, click the appropriate link in the navigation tree on the left hand side. Citrix NetScaler Table of contents Examples Examples for constructing an expression. NetScaler You can use this reference information in two ways: Constructing an expression with each click.

Navigation in this doc Expression formed 1. Click HTTP. HTTP 2. Click REQ. REQ 3.

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Click BODY. BODY 4. Check whether cache control headers are present in an HTTP response.

netscaler expression evaluator

Click RES.


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