static class ClientInfo {
ByteBuffer inBuf = ByteBuffer.allocateDirect(512);
ByteBuffer outBuf = ByteBuffer.allocateDirect(512);
boolean outputPending = false;
SocketChannel channel;
}
public class Refused {
static ByteBuffer outBuf = ByteBuffer.allocateDirect(100);
static ByteBuffer inBuf = ByteBuffer.allocateDirect(100);
static DatagramChannel client;
static DatagramChannel server;
static InetSocketAddress isa;
public static void main(String[] args) throws Exception {
outBuf.put("Blah Blah".getBytes());
outBuf.flip();
test1();
// This test has been disabled because there are many circumstances
// under which no ICMP port unreachable packets are received
// See http://java.sun.com/j2se/1.4/networking-relnotes.html
if ((args.length > 0) && (args[0].equals("test2"))) {
outBuf.rewind();
test2();
}
}
public static void setup() throws Exception {
client = DatagramChannel.open();
server = DatagramChannel.open();
client.socket().bind((SocketAddress) null);
server.socket().bind((SocketAddress) null);
client.configureBlocking(false);
server.configureBlocking(false);
InetAddress address = InetAddress.getLocalHost();
int port = client.socket().getLocalPort();
isa = new InetSocketAddress(address, port);
}
// Since this is not connected no PortUnreachableException should be thrown
public static void test1() throws Exception {
setup();
server.send(outBuf, isa);
server.receive(inBuf);
client.close();
outBuf.rewind();
server.send(outBuf, isa);
server.receive(inBuf);
server.close();
}
// Test the connected case to see if PUE is thrown
public static void test2() throws Exception {
setup();
server.configureBlocking(true);
server.connect(isa);
server.configureBlocking(false);
outBuf.rewind();
server.write(outBuf);
server.receive(inBuf);
client.close();
Thread.sleep(2000);
outBuf.rewind();
try {
server.write(outBuf);
Thread.sleep(2000);
inBuf.clear();
server.read(inBuf);
if (onSolarisOrLinux()) throw new Exception("Expected PUE not thrown");
} catch (PortUnreachableException pue) {
System.err.println("received PUE");
}
server.close();
}
static boolean onSolarisOrLinux() {
String osName = System.getProperty("os.name");
return osName.startsWith("SunOS") || osName.startsWith("Linux");
}
}
