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jonathanw84's avatar
jonathanw84
Icon for Cirrus rankCirrus
Jun 03, 2020

iRule to Add Trailing Slash Except for Extensions

Hello, I have an iRule that I am using to direct requests to a specific pool based on the URI: when HTTP_REQUEST { set uri [string tolower [HTTP::uri]] if {[HTTP::uri] starts_with "/apps"}...
application delivery
BIG-IP
iRules
  • cjunior's avatar
    cjunior
    Jun 04, 2020

    Hello,

    Considering that the resource will only have the dot char to extensions, I do this way:

    when HTTP_REQUEST {
    if { not ( [HTTP::path] ends_with "/") && not ( [URI::basename [HTTP::uri]] contains "." ) } {
        # Append slash and keep querystring when it exists
        HTTP::uri [HTTP::path]/[expr { "[URI::query [HTTP::uri]]" eq {} ? {} : "?[URI::query [HTTP::uri]]" }]
    }
    if { [string tolower [HTTP::uri]] starts_with "/apps" } {
        pool ProxyPass_DEV_pool_2
    }
    else {
        pool ProxyPass_DEV_pool_1
    }
}

    Where:

    1. "/apps" will become "/apps/" internally;
    2. "/apps?param=value" will become "/apps/?param=value" internally;
    3. "/test.html" and "/test.html?param=value" remais the same. 

    I hope it helps.

    Regards

cjunior's avatar
cjunior
Icon for Nacreous rankNacreous

Hello,

Considering that the resource will only have the dot char to extensions, I do this way:

when HTTP_REQUEST {
    if { not ( [HTTP::path] ends_with "/") && not ( [URI::basename [HTTP::uri]] contains "." ) } {
        # Append slash and keep querystring when it exists
        HTTP::uri [HTTP::path]/[expr { "[URI::query [HTTP::uri]]" eq {} ? {} : "?[URI::query [HTTP::uri]]" }]
    }
    if { [string tolower [HTTP::uri]] starts_with "/apps" } {
        pool ProxyPass_DEV_pool_2
    }
    else {
        pool ProxyPass_DEV_pool_1
    }
}

Where:

  1. "/apps" will become "/apps/" internally;
  2. "/apps?param=value" will become "/apps/?param=value" internally;
  3. "/test.html" and "/test.html?param=value" remais the same. 

I hope it helps.

Regards

jonathanw84's avatar
jonathanw84
Icon for Cirrus rankCirrus
Jun 08, 2020

Thanks cjunior! This worked well with only one minor issue. It looks like it is appending the / regardless if it the / is there or not. Is there a way to make the statement to say "if not contains "." AND does not end with "/", to add the "/"?

 

Thanks!

  • cjunior's avatar
    cjunior
    Icon for Nacreous rankNacreous
    Jun 08, 2020

    Ops! That passed by my eyes :/.

    Thank you for warn me.

    I rewrited that condition. Check that out.

  • jonathanw84's avatar
    jonathanw84
    Icon for Cirrus rankCirrus
    Jun 08, 2020

    Thank you so much! I was on the right track but I was slightly off. I really appreciate your help. Take care!