#47;&#47; userinfo      = *( unreserved &#47; pct-encoded &#47; sub-delims &#47; &quot;:&quot; )
  &#47;&#47; host          = IP-literal &#47; IPv4address &#47; reg-name
  &#47;&#47; port          = *DIGIT
  &#47;&#47; reg-name      = *( unreserved &#47; pct-encoded &#47; sub-delims )
  &#47;&#47;
  &#47;&#47; path          = path-abempty    ; begins with &quot;&#47;&quot; or is empty
  &#47;&#47;               &#47; path-absolute   ; begins with &quot;&#47;&quot; but not &quot;&#47;&#47;&quot;
  &#47;&#47;