// Check if DatagramChannel.send while connected can include
// address without throwing
private static void test1() throws Exception {
DatagramChannel sndChannel = DatagramChannel.open();
sndChannel.socket().bind(null);
InetSocketAddress sender =
new InetSocketAddress(InetAddress.getLocalHost(), sndChannel.socket().getLocalPort());
DatagramChannel rcvChannel = DatagramChannel.open();
rcvChannel.socket().bind(null);
InetSocketAddress receiver =
new InetSocketAddress(InetAddress.getLocalHost(), rcvChannel.socket().getLocalPort());
rcvChannel.connect(sender);
sndChannel.connect(receiver);
ByteBuffer bb = ByteBuffer.allocate(256);
bb.put("hello".getBytes());
bb.flip();
int sent = sndChannel.send(bb, receiver);
bb.clear();
rcvChannel.receive(bb);
bb.flip();
CharBuffer cb = Charset.forName("US-ASCII").newDecoder().decode(bb);
if (!cb.toString().startsWith("h")) throw new RuntimeException("Test failed");
rcvChannel.close();
sndChannel.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();
}
void isReadable(SelectionKey k) {
EventableChannel ec = (EventableChannel) k.attachment();
long b = ec.getBinding();
if (ec.isWatchOnly()) {
if (ec.isNotifyReadable()) eventCallback(b, EM_CONNECTION_NOTIFY_READABLE, null);
} else {
myReadBuffer.clear();
try {
ec.readInboundData(myReadBuffer);
myReadBuffer.flip();
if (myReadBuffer.limit() > 0) {
if (ProxyConnections != null) {
EventableChannel target = ProxyConnections.get(b);
if (target != null) {
ByteBuffer myWriteBuffer = ByteBuffer.allocate(myReadBuffer.limit());
myWriteBuffer.put(myReadBuffer);
myWriteBuffer.flip();
target.scheduleOutboundData(myWriteBuffer);
} else {
eventCallback(b, EM_CONNECTION_READ, myReadBuffer);
}
} else {
eventCallback(b, EM_CONNECTION_READ, myReadBuffer);
}
}
} catch (IOException e) {
UnboundConnections.add(b);
}
}
}
public static void main(String[] args) throws Exception {
DatagramChannel dc = DatagramChannel.open();
DatagramSocket socket = dc.socket();
socket.bind(new InetSocketAddress(22500));
ByteBuffer byteBuf = ByteBuffer.allocate(8);
// byteBuf.order(ByteOrder.LITTLE_ENDIAN);
LongBuffer longBuf = byteBuf.asLongBuffer();
while (true) {
dc.receive(byteBuf);
System.out.println(longBuf.get(0));
byteBuf.clear();
}
}
void isReadable(SelectionKey k) {
EventableChannel ec = (EventableChannel) k.attachment();
long b = ec.getBinding();
if (ec.isWatchOnly()) {
if (ec.isNotifyReadable()) eventCallback(b, EM_CONNECTION_NOTIFY_READABLE, null);
} else {
myReadBuffer.clear();
try {
ec.readInboundData(myReadBuffer);
myReadBuffer.flip();
if (myReadBuffer.limit() > 0) eventCallback(b, EM_CONNECTION_READ, myReadBuffer);
} catch (IOException e) {
UnboundConnections.add(b);
}
}
}
protected synchronized Message receiveMessage() throws IOException {
if (messageBuffer.size() > 0) {
Message m = (Message) messageBuffer.get(0);
messageBuffer.remove(0);
return m;
}
try {
InetSocketAddress remoteAddress = (InetSocketAddress) channel.receive(receiveBuffer);
if (remoteAddress != null) {
int len = receiveBuffer.position();
receiveBuffer.rewind();
receiveBuffer.get(buf, 0, len);
try {
IP address = IP.fromInetAddress(remoteAddress.getAddress());
int port = remoteAddress.getPort();
extractor.appendData(buf, 0, len, new SocketDescriptor(address, port));
receiveBuffer.clear();
extractor.updateAvailableMessages();
return extractor.nextMessage();
} catch (EOFException exc) {
exc.printStackTrace();
System.err.println(buf.length + ", " + len);
} catch (InvocationTargetException exc) {
exc.printStackTrace();
} catch (IllegalAccessException exc) {
exc.printStackTrace();
} catch (InstantiationException exc) {
exc.printStackTrace();
} catch (IllegalArgumentException e) {
e.printStackTrace();
} catch (InvalidCompressionMethodException e) {
e.printStackTrace();
}
}
} catch (ClosedChannelException exc) {
if (isKeepAlive()) {
throw exc;
}
}
return null;
}
public void resendMessage(Message message, IP remoteAddress, int remotePort) throws IOException {
if (remoteAddress == null) remoteAddress = IP.getLocalHost();
message.setSentStamp(getConvertedTime(remoteAddress, remotePort));
message.setMessageServer(this);
try {
sendBuffer.clear();
sendBuffer.put(extractor.convertMessage(message));
sendBuffer.flip();
channel.send(sendBuffer, new InetSocketAddress(remoteAddress.toString(), remotePort));
message.setRemoteAddress(remoteAddress);
message.setRemotePort(remotePort);
messageSent(message);
} catch (IllegalAccessException exc) {
throw new RuntimeException(exc);
} catch (IllegalArgumentException exc) {
throw new RuntimeException(exc);
} catch (InvocationTargetException exc) {
throw new RuntimeException(exc);
}
}
private void go() throws IOException {
// Create a new selector
Selector selector = Selector.open();
// Open a listener on each port, and register each one
// with the selector
for (int i = 0; i < ports.length; ++i) {
ServerSocketChannel ssc = ServerSocketChannel.open();
ssc.configureBlocking(false);
ServerSocket ss = ssc.socket();
InetSocketAddress address = new InetSocketAddress(ports[i]);
ss.bind(address);
SelectionKey key = ssc.register(selector, SelectionKey.OP_ACCEPT);
System.out.println("Going to listen on " + ports[i]);
}
while (true) {
int num = selector.select();
Set selectedKeys = selector.selectedKeys();
Iterator it = selectedKeys.iterator();
while (it.hasNext()) {
SelectionKey key = (SelectionKey) it.next();
if ((key.readyOps() & SelectionKey.OP_ACCEPT) == SelectionKey.OP_ACCEPT) {
// Accept the new connection
ServerSocketChannel ssc = (ServerSocketChannel) key.channel();
SocketChannel sc = ssc.accept();
sc.configureBlocking(false);
// Add the new connection to the selector
SelectionKey newKey = sc.register(selector, SelectionKey.OP_READ);
it.remove();
System.out.println("Got connection from " + sc);
} else if ((key.readyOps() & SelectionKey.OP_READ) == SelectionKey.OP_READ) {
// Read the data
SocketChannel sc = (SocketChannel) key.channel();
// Echo data
int bytesEchoed = 0;
while (true) {
echoBuffer.clear();
int r = sc.read(echoBuffer);
if (r <= 0) {
break;
}
echoBuffer.flip();
sc.write(echoBuffer);
bytesEchoed += r;
}
System.out.println("Echoed " + bytesEchoed + " from " + sc);
it.remove();
}
}
// System.out.println( "going to clear" );
// selectedKeys.clear();
// System.out.println( "cleared" );
}
}
public static void main(String[] args) {
try {
System.out.println("CliTest.java");
// create TCP socket channel
SocketChannel channel = SocketChannel.open();
System.out.println("CliTest.java: channel created");
channel.connect(new InetSocketAddress("localhost", PORT));
System.out.println("CliTest.java: channel socket connected");
System.out.println();
// create & send a login message
byte[] bytes = LoginMessage.getLoginMessage("user1", "password1");
System.out.println("CliTest.java: login message created");
System.out.println(LoginMessage.getMessageString(bytes));
System.out.printf("CliTest.java: login message length in bytes: %d\n", bytes.length);
ByteBuffer buf = ByteBuffer.allocate(4096);
buf.put(bytes);
buf.flip();
// System.out.printf("CliTest.java: buf.remaining before channel.write(): %d\n",
// buf.remaining());
int numwritten = channel.write(buf);
System.out.printf(
"CliTest.java: login mesage written: number of bytes written: %d\n", numwritten);
// read reply message
buf.clear();
int numread = channel.read(buf);
bytes = new byte[numread];
buf.flip();
buf.get(bytes);
if (LoginMessage.isLoginSuccessMessage(bytes)) {
System.out.printf(
"CliTest.java: first message read: Success Message: number of bytes read: %d\n",
numread);
// get remote port number from success message
int port = LoginMessage.getPort(bytes);
System.out.printf("Port Number: %d\n", port);
byte playerid = LoginMessage.getPlayerId(bytes);
System.out.printf("Player id: %d\n", playerid);
String mcastString = LoginMessage.getMulticastAddress(bytes);
System.out.printf("Multicast Address: %s\n", mcastString);
// create datagram channel & connect to rem port
DatagramChannel dchannel = DatagramChannel.open();
dchannel.socket().bind(new InetSocketAddress(0));
dchannel.socket().connect(new InetSocketAddress(channel.socket().getInetAddress(), port));
// get localport of datagram socket
int localport = dchannel.socket().getLocalPort();
System.out.printf("UDP local port: %d\n", localport);
// send success message to send port number to server
bytes = LoginMessage.getLoginSuccessMessage(playerid, null, localport);
buf.clear();
buf.put(bytes);
buf.flip();
channel.write(buf);
DeathMessage dm = new DeathMessage((byte) 1, (byte) 1);
bytes = dm.getByteMessage();
buf.clear();
buf.put(bytes);
buf.flip();
channel.write(buf);
} else {
System.out.printf(
"CliTest.java: first message read: NOT Success Message: number of bytes read: %d\n",
numread);
}
channel.close();
} catch (Exception e) {
e.printStackTrace();
}
}
