private function validateState()
{
if ($this->host === '' && ($this->scheme === 'http' || $this->scheme === 'https')) {
$this->host = self::HTTP_DEFAULT_HOST;
}
if ($this->getAuthority() === '') {
if (0 === strpos($this->path, '//')) {
throw new \InvalidArgumentException('The path of a URI without an authority must not start with two slashes "//"');
}
if ($this->scheme === '' && false !== strpos(explode('/', $this->path, 2)[0], ':')) {
throw new \InvalidArgumentException('A relative URI must not have a path beginning with a segment containing a colon');
}
} elseif (isset($this->path[0]) && $this->path[0] !== '/') {
throw new \InvalidArgumentException('The path of a URI with an authority must start with a slash "/" or be empty');
}
}