iRule – Redirects

#Different Redirects

########################
 302 Redirects
########################
when HTTP_REQUEST {
    HTTP::redirect https://www.domain.com/
}

########################
 301 Redirects
########################
when HTTP_REQUEST {
    HTTP::respond Location 301 https://www.domain.com/
}

############################
IF-Conditional Redirect:
############################
# Matching a condition
when HTTP_REQUEST {
    if {[HTTP::host] eq "domain.com"} {
        HTTP::respond Location 301 https://www.domain.com/
    }
}

# NOT matching a condition
when HTTP_REQUEST {
    if { not ([HTTP::host] eq "domain.com") } {
        HTTP::respond Location 301 https://www.domain.com/
    }
}

# Multiple conditions
when HTTP_REQUEST {
    if { ([HTTP::host] eq "domain.com") and ([HTTP::uri] eq "/login")} {
        HTTP::respond Location 301 https://www.domain.com/login/
    }
}

#if & elseif
when CLIENT_ACCEPTED {
   set default_pool [LB::server pool]
}
when HTTP_REQUEST {
    if { ([HTTP::host] eq "domain1.com") } {
        HTTP::respond Location 301 https://www.domain1.com/login/
    } elseif { ([HTTP::host] eq "domain2.com") } {
        HTTP::respond Location 301 https://www.domain1.com/login/
    } else {
        pool $default_pool
    }
}

##################################
Switch-Conditional Redirect:
##################################

#Check multiple unique domains
when CLIENT_ACCEPTED {
   set default_pool [LB::server pool]
}
when HTTP_REQUEST {
   switch -glob [HTTP::path] {
      "domain1.com" {
         HTTP::respond Location 301 https://www.domain1.com/
      }
      "domain2.com" {
         HTTP::respond Location 301 https://www.domain2.com/
      }
      default {
         pool $default_pool
      }
   }
}

#Redirect to same URL
when CLIENT_ACCEPTED {
   set default_pool [LB::server pool]
}
when HTTP_REQUEST {
   switch -glob [HTTP::path] {
      "domain1.com" -
      "domain2.com" {
         HTTP::respond Location 301 https://www.domain.com/
      }
      default {
         pool $default_pool
      }
   }
}

############################
Data Group
############################

class CLASS_HSF { 
   { 
      "/str1" { "domain1.com" } 
      "/str2" { "domain2.com" } 
   } 
}


when CLIENT_ACCEPTED {
set DEFAULT [LB::server pool]
}

when HTTP_REQUEST {                                                         
set HOST [string tolower [HTTP::host]]                                      
set URI [string tolower [HTTP::uri]]                                                               
                                                                            
if  { $HOST equals "www.domainhs.com" }{                                         
    HTTP::respond 301 Location "http://www.domain.com[HTTP::uri]"
    } elseif { [class match $URI starts_with CLASS_HSF] } {
        set DOMAIN [class match -value $URI contains CLASS_HSF]
        HTTP::respond 301 Location "http://$DOMAIN"
    } else {
        pool $DEFAULT
    }
}

Reference:

Github Link