/*
* Copyright (c) 2003, 2005, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
import java.net.*;
import java.io.*;
import java.util.*;
public class Tests {
/**
* performs a simple exchange of data between the two sockets
* and throws an exception if there is any problem.
*/
public static void simpleDataExchange (Socket s1, Socket s2)
throws Exception {
InputStream i1 = s1.getInputStream();
InputStream i2 = s2.getInputStream();
OutputStream o1 = s1.getOutputStream();
OutputStream o2 = s2.getOutputStream();
startSimpleWriter("SimpleWriter-1", o1, 100);
startSimpleWriter("SimpleWriter-2", o2, 200);
simpleRead (i2, 100);
simpleRead (i1, 200);
}
static void startSimpleWriter(String threadName, final OutputStream os, final int start) {
(new Thread(new Runnable() {
public void run() {
try { simpleWrite(os, start); }
catch (Exception e) {unexpected(e); }
}}, threadName)).start();
}
static void unexpected(Exception e ) {
System.out.println("Unexcepted Exception: " + e);
e.printStackTrace();
}
/**
* Send a packet from s1 to s2 (ia2/s2.localPort) and check it
* Send a packet from s2 to s1 (ia1/s1.localPort) and check it
*/
public static void simpleDataExchange (DatagramSocket s1, InetAddress ia1,
DatagramSocket s2, InetAddress ia2)
throws Exception {
SocketAddress dest1 = new InetSocketAddress (ia1, s1.getLocalPort());
dprintln ("dest1 = " + dest1);
SocketAddress dest2 = new InetSocketAddress (ia2, s2.getLocalPort());
dprintln ("dest2 = " + dest2);
byte[] ba = "Hello world".getBytes();
byte[] bb = "HELLO WORLD1".getBytes();
DatagramPacket p1 = new DatagramPacket (ba, ba.length, dest1);
DatagramPacket p2 = new DatagramPacket (ba, ba.length, dest2);
DatagramPacket r1 = new DatagramPacket (new byte[256], 256);
DatagramPacket r2 = new DatagramPacket (new byte[256], 256);
s2.send (p1);
s1.send (p2);
s1.receive (r1);
s2.receive (r2);
comparePackets (p1, r1);
comparePackets (p2, r2);
}
/**
* Send a packet from s1 to s2 (ia2/s2.localPort) and send same packet
* back from s2 to sender. Check s1 receives original packet
*/
public static void datagramEcho (DatagramSocket s1, DatagramSocket s2,
InetAddress ia2)
throws Exception {
byte[] ba = "Hello world".getBytes();
DatagramPacket p1;
SocketAddress dest2 = null;
if (ia2 != null) {
dest2 = new InetSocketAddress (ia2, s2.getLocalPort());
p1 = new DatagramPacket (ba, ba.length, dest2);
} else {
p1 = new DatagramPacket (ba, ba.length);
}
dprintln ("dest2 = " + dest2);
DatagramPacket r1 = new DatagramPacket (new byte[256], 256);
DatagramPacket r2 = new DatagramPacket (new byte[256], 256);
s1.send (p1);
s2.receive (r1);
s2.send (r1);
s1.receive (r2);
comparePackets (p1, r1);
comparePackets (p1, r2);
}
public static void comparePackets (DatagramPacket p1, DatagramPacket p2)
throws Exception {
byte[] b1 = p1.getData();
byte[] b2 = p2.getData();
int len = p1.getLength () > p2.getLength() ? p2.getLength()
: p1.getLength();
for (int i=0; i<len; i++) {
if (b1[i] != b2[i]) {
throw new Exception ("packets not the same");
}
}
}
/* check the time got is within 20% of the time expected */
public static void checkTime (long got, long expected) {
dprintln ("checkTime: got " + got + " expected " + expected);
long upper = expected + (expected / 5);
long lower = expected - (expected / 5);
if (got > upper || got < lower) {
throw new RuntimeException ("checkTime failed: got " + got + " expected " + expected);
}
}
static boolean debug = false;
public static void checkDebug (String[] args) {
debug = args.length > 0 && args[0].equals("-d");
}
public static void dprint (String s) {
if (debug) {
System.out.print (s);
}
}
public static void dprintln (String s) {
if (debug) {
System.out.println (s);
}
}
static int numberInterfaces () {
try {
Enumeration ifs = NetworkInterface.getNetworkInterfaces();
int nifs=0;
while (ifs.hasMoreElements()) {
nifs++;
ifs.nextElement();
}
return nifs;
} catch (SocketException e) {
return 0;
}
}
public static Enumeration ipv4Addresses() {
return new AddrEnum (Inet4Address.class);
}
public static Inet4Address getFirstLocalIPv4Address () {
Enumeration e = ipv4Addresses();
if (!e.hasMoreElements()) {
return null;
}
return (Inet4Address)e.nextElement();
}
public static Inet6Address getFirstLocalIPv6Address () {
Enumeration e = ipv6Addresses();
if (!e.hasMoreElements()) {
return null;
}
return (Inet6Address)e.nextElement();
}
public static Enumeration ipv6Addresses() {
return new AddrEnum (Inet6Address.class);
}
/* enumerates the Inet4Addresses or Inet6Addresses on the system */
private static class AddrEnum implements Enumeration {
Enumeration ifs;
NetworkInterface currIf = null;
InetAddress nextAddr=null;
Enumeration addrs=null;
Class filter;
static final byte[] fe80_loopback = new byte [] {
(byte)0xfe,(byte)0x80,0,0,0,0,0,0,0,0,0,0,0,0,0,1
};
AddrEnum (Class filter) {
this.filter = filter;
try {
ifs = NetworkInterface.getNetworkInterfaces();
} catch (SocketException e) {}
}
public boolean hasMoreElements () {
if (nextAddr == null) {
nextAddr = getNext();
}
return (nextAddr != null);
}
public Object nextElement () {
if (!hasMoreElements()) {
throw new NoSuchElementException ("no more addresses");
}
Object next = nextAddr;
nextAddr = null;
return next;
}
private InetAddress getNext() {
while (true) {
if (currIf == null) {
currIf = getNextIf();
if (currIf == null) {
return null;
}
addrs = currIf.getInetAddresses();
}
while (addrs.hasMoreElements()) {
InetAddress addr = (InetAddress) addrs.nextElement();
if (filter.isInstance (addr) && !addr.isLoopbackAddress()) {
if (Arrays.equals (addr.getAddress(), fe80_loopback)) {
continue;
}
return addr;
}
}
currIf = null;
}
}
private NetworkInterface getNextIf () {
if (ifs != null) {
while (ifs.hasMoreElements()) {
NetworkInterface nic = (NetworkInterface)ifs.nextElement();
try {
if (nic.isUp() && !nic.isLoopback())
return nic;
} catch (SocketException e) {
// ignore
}
}
}
return null;
}
}
/**
* Throws a RuntimeException if the boolean condition is false
*/
public static void t_assert (boolean assertion) {
if (assertion) {
return;
}
Throwable t = new Throwable();
StackTraceElement[] strace = t.getStackTrace();
String msg = "Assertion failed at: " + strace[1].toString();
throw new RuntimeException (msg);
}
private static void simpleRead (InputStream is, int start) throws Exception {
byte b[] = new byte [2];
for (int i=start; i<start+100; i++) {
int x = is.read (b);
if (x == 1) {
x += is.read (b,1,1);
}
if (x!=2) {
throw new Exception ("read error");
}
int r = bytes (b[0], b[1]);
if (r != i) {
throw new Exception ("read " + r + " expected " +i);
}
}
}
/* convert signed bytes to unisigned int */
private static int bytes (byte b1, byte b2) {
int i1 = (int)b1 & 0xFF;
int i2 = (int)b2 & 0xFF;
return i1 * 256 + i2;
}
static void simpleWrite (OutputStream os, int start) throws Exception {
byte b[] = new byte [2];
for (int i=start; i<start+100; i++) {
b[0] = (byte) (i / 256);
b[1] = (byte) (i % 256);
os.write (b);
}
}
private static class Runner extends Thread {
Runnable runnee;
long delay;
Runner (Runnable runnee, long delay) {
super();
this.runnee = runnee;
this.delay = delay;
}
public void run () {
try {
Thread.sleep (delay);
runnee.run ();
} catch (Exception e) {
e.printStackTrace();
}
}
}
/*
* Take the given Runnable and run it in a spawned thread
* after the given time has elapsed. runAfter() returns immediately
*/
public static void runAfter (long millis, Runnable runnee) {
Runner runner = new Runner (runnee, millis);
runner.start ();
}
static String osname;
static {
osname = System.getProperty ("os.name");
}
static boolean isLinux () {
return osname.equals ("Linux");
}
static boolean isWindows () {
return osname.startsWith ("Windows");
}
}