Brocade Virtual ADX Server Load Balancing Guide (Supporting ADX v03.1.00) - Manual (Page 277)

Brocade Virtual ADX Server Load Balancing Guide 261
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Layer 7 content switching
5
The highlighted URLs in the following two HTTP request messages show the difference between the
original request and the one after being rewritten.
Example Original HTTP request:
GET /abc/xyz/index.html HTTP/1.1\r\n
Host: www.example5.com\r\n
User-Agent: Mozilla/5.0 Netscape/7.02\r\n
Accept-Charset: ISO-8859-1\r\n
Cookie: name=brocadenet; userid=12345\r\n
\r\n
Example Rewritten HTTP request:
GET /abc/hello-world/xyz/index.html HTTP/1.1\r\n
Host: www.example5.com\r\n
User-Agent: Mozilla/5.0 Netscape/7.02\r\n
Accept-Charset: ISO-8859-1\r\n
Cookie: name=brocadenet; userid=12345\r\n
\r\n
Inserting a string at negative offset
To configure a request to insert a string after a CSW rule match, follow these steps.
1. Define a CSW rule for HTTP URL content.
Virtual ADX(config)#csw-rule r22 url prefix /abc/
Syntax: csw-rule rule-name url prefix prefix-content
2. Define a CSW policy.
Virtual ADX(config)#csw-policy mypolicy
Syntax: csw-policy policy-name
3. Specify a primary action.
Virtual ADX(config-csw-mypolicy)#match r22 forward 1025
Syntax: match rule-name forward server-id
4. Specify a dependent rewrite action.
Virtual ADX(config-csw-mypolicy)#match r22 rewrite request-insert /hello-world
neg-offset 5
Syntax: match rule-name rewrite request-insert content neg-offset offset
NOTE
The following information assumes you have already completed the previous configuration.
NOTE
If you want to insert a string at the beginning of a URL, make sure that the string always starts with
a "/", or the server that receives the request returns a response of "bad request." This response
indicates the format is invalid. The assumption is that the URL always starts with a "/".