10.2.2 - irule redirect and rewrite not working for non-FQDN requests.

Hi Jim,

The easiest way to make this iRule work with unqualified hostnames is to just append the domain to the $originalHost variable if it doesn't already exist. I added a conditional to accomplish this:

if hostname is not fully-qualified append the domain
if { !($originalHost ends_with $static::mydomain) } { append originalHost ".$static::mydomain" } 

I also changed matchclass to the class command on line 13. The matchclass command has been deprecated and its usage is discouraged. Likewise, the $:: method for referencing data groups has also been deprecated. The line changed from:

if { [matchclass $originalHost starts_with $::data_SharedEnv_Hosts_table  ]}{ 

to:

if { [class match $originalHost starts_with data_SharedEnv_Hosts_table]}{ 

Lastly, I added a static variable for your domain name so you only have to define it once in your rule. I also replaced all of the occurrences of "mycompany.com" with $static::mydomain. The final iRule looks like this:

when RULE_INIT {
    set static::mydomain "mycompany.com"
}
    
when HTTP_REQUEST {
    get user hostheader
    set originalHost [string tolower [HTTP::host]]

    if hostname is not fully-qualified append the domain
    if { !($originalHost ends_with $static::mydomain) } { append originalHost ".$static::mydomain" }

    check if rewrite or redirect is applicable
    if { [class match $originalHost starts_with data_SharedEnv_Hosts_table]} {
        if { [class match -value -- $originalHost starts_with data_SharedEnv_isSSL_table] == "http"} {
            get SharedEnv DNS value from data_SharedEnv_Hosts_table  
            set sharedEnvHost [class match -value -- $originalHost starts_with data_SharedEnv_Hosts_table ]
            
            get URI from table
            switch $sharedEnvHost {
                "internal.$static::mydomain" {
                    set baseURI [class match -value -- $originalHost starts_with data_SharedEnv_internal_URI_table]
                }
                default {
                    set baseURI ""
                }
            }
            
            Replace the host header value with $sharedEnvHost value and use the the baseURI
            HTTP::header replace Host $sharedEnvHost
            HTTP::uri "/$baseURI/[HTTP::uri]"  
        }
        if { [class match -value -- $originalHost contains data_SharedEnv_isSSL_table ] == "https"}{
            get SharedEnv DNS to use
            set sharedEnvHost [class match -value -- $originalHost starts_with data_SharedEnv_Hosts_table ]
            
            get URI table to use
            switch $sharedEnvHost {
                "internal.$static::mydomain" {
                    set baseURI [class match -value -- $originalHost starts_with data_SharedEnv_internal_URI_table]       
                }
                default {
                    set baseURI ""
                }
            }
            redirect using $sharedEnv and $baseURI
            HTTP::redirect "https://$sharedEnvHost/$baseURI[HTTP::uri]"
        }
    } elseif { ! ($originalHost ends_with ".$static::mydomain") }{

     HTTP::redirect "http://$originalHost.$static::mydomain"
    }       
}

Hope that helps, -George