1 /*
2 * XNap - A P2P framework and client.
3 *
4 * See the file AUTHORS for copyright information.
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 */
19
20 package org.xnap.io;
21
22 import java.io.FilterInputStream;
23 import java.io.IOException;
24 import java.io.InputStream;
25
26 /***
27 * The global throtteled InputStream. All downloads should pipe their
28 * data through this stream.
29 */
30 public class ThrottledInputStream extends FilterInputStream {
31
32 // --- Data Field(s) ---
33
34 private static ThrottleSupport ts = new ThrottleSupport();
35
36 // --- Constructor(s) ---
37
38 public ThrottledInputStream(InputStream in)
39 {
40 super(in);
41 }
42
43 // --- Method(s) ---
44
45 public static void setBandwidth(long newValue)
46 {
47 ts.setBandwidth(newValue);
48 }
49
50 public int read(byte[] b, int off, int len) throws IOException
51 {
52 len = ts.allocate(len);
53 return len > 0 ? in.read(b, off, len) : len;
54 }
55 }