WP_Network::_set_cookie_domain()
Method: Sets the cookie domain based on the network domain if one has not been populated.
Source: wp-includes/class-wp-network.php:303
WP_Network::get_by_path()
Method: Retrieves the closest matching network for a domain and path.
Source: wp-includes/class-wp-network.php:331
network_by_path_segments_count
Filter Hook: Filters the number of path segments to consider when searching for a site.
Source: wp-includes/class-wp-network.php:380