// 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();
}
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);
}
public long openUdpSocket(InetSocketAddress address) throws IOException {
// TODO, don't throw an exception out of here.
DatagramChannel dg = DatagramChannel.open();
dg.configureBlocking(false);
dg.socket().bind(address);
long b = createBinding();
EventableChannel ec = new EventableDatagramChannel(dg, b, mySelector);
dg.register(mySelector, SelectionKey.OP_READ, ec);
Connections.put(b, ec);
return b;
}
public static void main(String args[]) throws Exception {
final int ENOUGH_SIZE = 1024;
final int SMALL_SIZE = 4;
boolean isBlocked = true;
int size = ENOUGH_SIZE;
if (args.length > 0) {
int opt = Integer.parseInt(args[0]);
switch (opt) {
case 1:
isBlocked = true;
size = ENOUGH_SIZE;
break;
case 2:
isBlocked = true;
size = SMALL_SIZE;
break;
case 3:
isBlocked = false;
size = ENOUGH_SIZE;
break;
case 4:
isBlocked = false;
size = SMALL_SIZE;
break;
}
}
DatagramChannel channel = DatagramChannel.open();
channel.configureBlocking(isBlocked);
ByteBuffer buffer = ByteBuffer.allocate(size);
DatagramSocket socket = channel.socket();
SocketAddress localAddr = new InetSocketAddress(8000);
socket.bind(localAddr);
while (true) {
System.out.println("开始接收数据报");
SocketAddress remoteAddr = channel.receive(buffer);
if (remoteAddr == null) {
System.out.println("没有接收到数据报");
} else {
buffer.flip();
System.out.println("接收到的数据报的大小为" + buffer.remaining());
}
Thread.sleep(500);
}
}
private void init() throws IOException {
messageBuffer = new ArrayList();
receiveBuffer = ByteBuffer.allocate(CAPACITY);
sendBuffer = ByteBuffer.allocate(CAPACITY);
buf = new byte[CAPACITY];
channel = DatagramChannel.open();
channel.configureBlocking(false);
InetAddress host = null;
if (getAddress() != null) {
host = InetAddress.getByAddress(getAddress().getBytes());
}
channel.socket().bind(new InetSocketAddress(host, getPort()));
channel.socket().setReceiveBufferSize(CAPACITY);
certifier = new MessageCertifier(this);
extractor = new MessageExtractor(this);
}