Rewrite specific URL in SharePoint 2013

The best solution is to:

• create a alternate access mapping with:
  • internal url : https://www.xyz.com
  • external url : https://www.abc.com
• rewrite Host header with the following irule:

.

when HTTP_REQUEST 
{
    if { ([string tolower [HTTP::host]] equals "www.abc.com") } {
        HTTP::header replace Host "www.xyz.com"
    }
}

when HTTP_RESPONSE {
    if { [HTTP::header exists "Transfer-encoding"] } {
        HTTP::payload rechunk
    }
}

With this solution, BigIP will send request with www.xyz.com to the server but replies from sharepoint will be with