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Use Case: Dynamiccontent switching

August 20, 2024

Contributed by:

C C S

This use case provides dynamic content switching by using an HTTP callout to get the name of the load balancing virtual server to which the request is forwarded.

Add a content switching virtual server.

> add cs vserver cs_vserver1 HTTP 10.102.29.196 80
<!--NeedCopy-->

Create an HTTP callout.

> add policy httpCallout http_callout1
<!--NeedCopy-->

Configure the HTTP callout to respond with the name of the load balancing virtual server from a request that contains the client IP address in the HTTP header “X-CLIENT-IP”.

> set policy httpCallout http_callout1 -IPAddress 10.217.14.23 -port 80 -returnType TEXT -hostExpr ""www.get-lbvip.com"" -urlStemExpr "\"/index.html\"" -headers X-CLIENT-IP(CLIENT.IP.SRC) -resultExpr "HTTP.RES.BODY(1000).AFTER_STR(\"<lbvip>\").BEFORE_STR("<lbvip")"
<!--NeedCopy-->

Configure the content switching action to retrieve the callout response.
```
> add cs action cs_action1 -targetVserverExpr 'SYS.HTTP_CALLOUT(http_callout1)'

```
Note: You must bind a load balancing virtual server to the content switching virtual server to account for:
- The non-availability of the load balancing virtual server that the callout resolves to.
- A UNDEF condition that results from the execution of the callout.
```
> bind cs vserver cs_vserver1 -lbvserver default_lbvip

```

2. Configure the content switching policy.

```
> add cs policy cs_policy1 -rule true -action cs_action1
<!--NeedCopy--> ```

3. Binding the content switching policy to the content switching virtual server.

```
> bind cs vserver cs_vserver1 -policyName cs_policy1 -priority 10
<!--NeedCopy--> ```

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Use Case: Dynamiccontent switching

August 20, 2024

Contributed by:

C C S

August 20, 2024

Contributed by:

C C S

Use Case: Dynamiccontent switching

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