在Java中,请求网页的套接字总是超时

我请求一个带有如下套接字的网页:

Socket sock = null;
PrintWriter out = null;
BufferedReader in = null;

try {
    sock = new Socket( "www.overvprojects.nl", 80 );
    out = new PrintWriter( sock.getOutputStream(), true );
    in = new BufferedReader( new InputStreamReader( sock.getInputStream() ) );
} catch ( UnknownHostException e ) {
    e.printStackTrace();
} catch ( IOException e ) {
e.printStackTrace();
}

out.println( "GET /ip.php HTTP/1.1" );
out.println( "Host: www.overvprojects.nl" );
out.println( "" );
out.flush();

String buf = "";

while ( buf != null )
{
    try {
        buf = in.readLine();
    } catch ( IOException e ) {
        e.printStackTrace();
    }

    if ( buf != null && Pattern.matches( "^(25[0-5]|2[0-4]\\d|[0-1]?\\d?\\d)(\\.(25[0-5]|2[0-4]\\d|[0-1]?\\d?\\d)){3}$", buf ) ) {
        ipText.setText( buf );

        break;
    }
}

try {
    in.close();
    out.close();
    sock.close();
} catch ( IOException e ) {
    e.printStackTrace();
}