/**
* Returns the host address of the given URL.
*
* @param url
* the URL object where to read the host address from.
* @return the host address of the specified URL.
*/
protected InetAddress getHostAddress(URL url)
{
try
{
String host = url.getHost();
if (host == null || host.length() == 0)
{
return(null);
}
return(InetAddress.getByName(host));
}
catch (UnknownHostException)
{
return(null);
}
}
/**
* Compares two URL objects whether they refer to the same host.
*
* @param url1
* the first URL to be compared.
* @param url2
* the second URL to be compared.
* @return {@code true} if both URLs refer to the same host, {@code false}
* otherwise.
*/
protected bool hostsEqual(URL url1, URL url2)
{
// Compare by addresses if known.
InetAddress address1 = getHostAddress(url1);
InetAddress address2 = getHostAddress(url2);
if (address1 != null && address2 != null)
{
return(address1.equals(address2));
}
// Compare by name.
String host1 = getHost(url1);
String host2 = getHost(url2);
if (host1 == null && host2 == null)
{
return(true);
}
return(host1 != null && host1.equalsIgnoreCase(host2));
}