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Forum Discussion

puluck's avatar
puluck
Icon for Cirrus rankCirrus
Sep 15, 2016

irule for custom header

Hello All,   I have requirement ,where F5 need to insert custom header before load balance the traffic .Client will connect on http port ,but traffic will be sent to port 81 on backend pool for on...
application delivery
iRules
Kai_Wilke's avatar
Kai_Wilke
Icon for MVP rankMVP
Sep 15, 2016

Hi Puluck,

... if you need to insert the X-Origin-Port header into the request send to your backend application use the code below...

 

 

when HTTP_REQUEST_SEND {
    clientside {
        HTTP::header replace "X-Origin-Port" [TCP::remote_port]
    }
}

 

... if you need to insert the X-Origin-Port header into the responses send to your clients you may use this code...

 

when HTTP_RESPONSE {
    HTTP::header replace "X-Origin-Port" [TCP::remote_port]
}

 

Note: I've changed the header name to "X-Origin-Port" and placed the Port into the header value section. This makes much more sense for me. Well, if the header name must be "X-Origin-Port-80/81" then use HTTP::header replace "X-Origin-Port-[TCP::remote_port]" "1", since a HTTP header MUST always have a value to become fully RFC compliant.

Cheers, Kai