Forum Discussion

Nimbostratus

Sep 05, 2014

test for http response header, if not there set one

the senario is, the webserver sometimes "forgot" to set http header. I would like a irule witch first is checking if the http header is ther. If the header is present (dont change). If the header is ...

Noctilucent

Sep 05, 2014

i think exclamation mark (!) should be inside curly brackets.

e.g.

 config

[root@ve11a:Active:In Sync] config  tmsh list ltm rule qux
ltm rule qux {
    when HTTP_RESPONSE {
  if { ![HTTP::header exists "Access-Control-Allow-Credentials"] } {
    HTTP::header insert "Access-Control-Allow-Credentials" "true"
  }

  if { ![HTTP::header exists "Access-Control-Allow-Headers"] } {
    HTTP::header insert "Access-Control-Allow-Headers" ""
  }

  if { ![HTTP::header exists "Access-Control-Allow-Origin"] } {
    HTTP::header insert "Access-Control-Allow-Origin" ""
  }
}
}

 test

[root@ve11a:Active:In Sync] config  curl -I http://172.28.24.10
HTTP/1.1 200 OK
Date: Fri, 05 Sep 2014 11:06:09 GMT
Server: Apache/2.2.3 (CentOS)
Last-Modified: Sun, 09 Feb 2014 08:39:51 GMT
ETag: "41879c-59-2a9c23c0"
Accept-Ranges: bytes
Content-Length: 89
Content-Type: text/html; charset=UTF-8
Access-Control-Allow-Credentials: true
Access-Control-Allow-Headers:
Access-Control-Allow-Origin: