/**
* The scheme, authority, and path of the request resource URI [RFC3986]
* are included by constructing an "http" or "https" URI representing
* the request resource (without the query or fragment) as follows:
* For example, the HTTP request:
* GET /r%20v/X?id=123 HTTP/One.One
* Host: EXAMPLE.COM:80
* is represented by the base string URI: "http://example.com/r%20v/X"
* In another example, the HTTPS request:
* GET /?q=One HTTP/One.One
* Host: www.example.net:8080
* is represented by the base string URI:
* "https://www.example.net:8080/".
* @param Link $link
* @return null|string
*/
private function getBaseStringURI(Link $link)
{
//The scheme and host MUST be in lowercase.
//The host and port values MUST match the content of the HTTP
//request "Host" header field
$url = $link->getScheme() ? strtolower($link->getScheme() . '://') : null;
$url .= $this->encode(strtolower($link->getHost()));
//The port MUST be included if it is not the default port for the
//scheme, and MUST be excluded if it is the default. Specifically,
//the port MUST be excluded when making an HTTP request [RFC2616]
//to port 80 or when making an HTTPS request [RFC2818] to port 443.
//All other non-default port numbers MUST be included.
$url .= $link->getPort() && ($link->getPort() != 80 || $link->getPort() != 443) ? ':' . $link->getPort() : null;
$url .= $link->getPath() ? $link->getPath() : '/';
return $url;
}
