This article describes how to configure rewrite policy on NetScaler to replace text in the body of HTML page.

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Instructions

In this example, udskiftmig is replaced with with morten and (replaceme)|(endnuentest) is replaced with bjarneregex.

The following is the rewrite policy on NetScaler which is used to replace text in the body of HTML page.
add rewrite action RWAC_Http_to_https replace_all "http.res.body(1000000)" "\"morten\"" -pattern udskiftmig
add rewrite action RWAC_Ourwiki_links_to_FQDN replace_all "HTTP.RES.BODY(1000000)" "\"bjarneregex\"" -search "regex(re~(replaceme)|(endnuentest)~)"
add rewrite policy RW_POL_Http_to_Https_links TRUE RWAC_Http_to_https NOREWRITE
add rewrite policy RW_POL_Ourwiki_links TRUE RWAC_Ourwiki_links_to_FQDN NOREWRITE
add lb vserver lbvs_debian_http HTTP 172.16.4.18 80 -persistenceType NONE -cltTimeout 180
add server srv_debian x.x.x.x
add service svc_debian_http srv_debian HTTP 80 -gslb NONE -maxClient 0 -maxReq 0 -cip DISABLED -usip NO -useproxyport YES -sp ON -cltTimeout 180 -svrTimeout 360 -CKA NO -TCPB NO -CMP NO
bind lb vserver lbvs_debian_http svc_debian_http
bind lb vserver lbvs_debian_http -policyName RW_POL_Http_to_Https_links -priority 100 -gotoPriorityExpression NEXT -type RESPONSE
bind lb vserver lbvs_debian_http -policyName RW_POL_Ourwiki_links -priority 110 -gotoPriorityExpression END -type RESPONSE

Note: If the compression is enabled on the backend then there is a chance that the preceding commands will not work as expected. In this case create a request rewrite policy to delete the accept encoding header.

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This article describes how to configure rewrite policy on NetScaler to replace text in the body of HTML page.