public static void main(String[] args) throws IOException, InterruptedException {
boolean running = true;
// udp protocol over a socket.
DatagramSocket socket = new DatagramSocket();
while (running) {
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
String line = br.readLine();
String[] inputs = line.split(" ");
if (inputs.length < 2) {
System.out.println("Usage: username command id");
socket.close();
return;
}
byte[] byteArr = (inputs[0] + " " + inputs[1] + " " + inputs[2]).getBytes();
// send request
byte[] buf = new byte[256];
InetAddress address = InetAddress.getByName("localhost");
DatagramPacket packet = new DatagramPacket(byteArr, byteArr.length, address, 4445);
socket.send(packet);
// get response
packet = new DatagramPacket(buf, buf.length);
socket.receive(packet);
// display response
String received = new String(packet.getData(), 0, packet.getLength());
System.out.println("From server: " + received);
}
// socket.close();
}
/**
* Copies the properties of a specific <tt>DatagramPacket</tt> to another <tt>DatagramPacket</tt>.
* The property values are not cloned.
*
* @param src the <tt>DatagramPacket</tt> which is to have its properties copied to <tt>dest</tt>
* @param dest the <tt>DatagramPacket</tt> which is to have its properties set to the value of the
* respective properties of <tt>src</tt>
*/
public static void copy(DatagramPacket src, DatagramPacket dest) {
synchronized (dest) {
dest.setAddress(src.getAddress());
dest.setPort(src.getPort());
byte[] srcData = src.getData();
if (srcData == null) dest.setLength(0);
else {
byte[] destData = dest.getData();
if (destData == null) dest.setLength(0);
else {
int destOffset = dest.getOffset();
int destLength = destData.length - destOffset;
int srcLength = src.getLength();
if (destLength >= srcLength) destLength = srcLength;
else if (logger.isLoggable(Level.WARNING)) {
logger.log(Level.WARNING, "Truncating received DatagramPacket data!");
}
System.arraycopy(srcData, src.getOffset(), destData, destOffset, destLength);
dest.setLength(destLength);
}
}
}
}
public static void main(String args[]) {
DatagramSocket skt = null;
try {
skt = new DatagramSocket(6789);
byte[] buffer = new byte[1000];
while (true) {
DatagramPacket request = new DatagramPacket(buffer, buffer.length);
skt.receive(request);
System.out.println("Data received from client");
System.out.println(new String(request.getData()));
Thread.sleep(15000);
String[] arrayMsg = (new String(request.getData())).split(" ");
System.out.println(arrayMsg[0] + "server processed");
byte[] sendMsg = (arrayMsg[0] + "server processed").getBytes();
DatagramPacket reply =
new DatagramPacket(sendMsg, sendMsg.length, request.getAddress(), request.getPort());
System.out.println("sending data from server to client");
Thread.sleep(15000);
;
skt.send(reply);
}
} catch (Exception e) {
}
}
public void run() {
active = true;
byte[] b = new byte[PACKET_LENGTH];
DatagramPacket p = new DatagramPacket(b, b.length);
while (active) {
try {
socket.receive(p);
// this string constructor which accepts a charset throws an exception if it is
// null
if (encoding == null) {
handlerThread.append(new String(p.getData(), 0, p.getLength()));
} else {
handlerThread.append(new String(p.getData(), 0, p.getLength(), encoding));
}
} catch (SocketException se) {
// disconnected
} catch (IOException ioe) {
ioe.printStackTrace();
}
}
getLogger().debug("{}'s thread is ending.", MulticastReceiver.this.getName());
}
public void run() {
try {
while (running) {
byte[] sendClientData = new byte[512];
byte[] sendServerData = new byte[512];
byte[] receiveClientData = new byte[512];
byte[] receiveServerData = new byte[512];
DatagramPacket receiveClientPacket = receivePacket(receiveClientData, receiveSocket);
receiveClientPacket.getLength();
// find port used by client
int clientPort = receiveClientPacket.getPort();
DatagramSocket hostSocket = new DatagramSocket();
sendServerData = receiveClientPacket.getData();
sendPacket(sendServerData, serverIPAddress, ServerPort, hostSocket);
DatagramPacket receiveServerPacket = receivePacket(receiveServerData, hostSocket);
if (receiveServerPacket.getData()[0] == 1) {
running = false;
}
sendClientData = receiveServerPacket.getData();
sendPacket(sendClientData, clientIPAddress, clientPort, hostSocket);
hostSocket.close();
}
receiveSocket.close();
} catch (Exception e) {
e.printStackTrace();
}
}
public static void main(String args[]) throws Exception {
BufferedReader inFromUser = new BufferedReader(new InputStreamReader(System.in));
DatagramSocket clientSocket = new DatagramSocket();
InetAddress IPAddress = InetAddress.getByName("192.168.1.16");
byte[] sendData = new byte[1024];
byte[] receiveData = new byte[1024];
String sentence = new String("HELLO");
sendData = sentence.getBytes();
DatagramPacket sendPacket = new DatagramPacket(sendData, sendData.length, IPAddress, 9876);
clientSocket.send(sendPacket);
DatagramPacket receivePacket = new DatagramPacket(receiveData, receiveData.length);
clientSocket.receive(receivePacket);
sentence = new String(receivePacket.getData(), 0, receivePacket.getLength());
if (sentence.equals("##100##")) {
System.out.println(sentence + ": Waiting for Red.");
}
while (!sentence.equals("##200##")) {
try {
receivePacket = new DatagramPacket(receiveData, receiveData.length);
clientSocket.receive(receivePacket);
sentence = new String(receivePacket.getData(), 0, receivePacket.getLength());
} catch (Exception e) {
}
}
if (sentence.equals("##200##")) {
System.out.println(sentence + ": Red and Blue are connected");
}
while (true) {
receiveData = new byte[1024];
receivePacket = new DatagramPacket(receiveData, receiveData.length);
clientSocket.receive(receivePacket);
sentence = new String(receivePacket.getData(), 0, receivePacket.getLength());
if (sentence.equals("##300##")) {
break;
}
System.out.println("RED: " + sentence);
sentence = inFromUser.readLine();
sendData = sentence.getBytes();
sendPacket = new DatagramPacket(sendData, sendData.length, IPAddress, 9876);
clientSocket.send(sendPacket);
}
System.out.println(sentence + ": Disconnected.");
clientSocket.close();
}
public void run() {
while (listen) {
try {
byte[] buf = new byte[256];
byte[] buf2 = new byte[256];
DatagramPacket packet = new DatagramPacket(buf, buf.length);
InetAddress address;
socket.receive(packet);
String in = new String(packet.getData(), 0, packet.getLength());
address = packet.getAddress();
int port = packet.getPort();
// newClient = findPort(port, address, newClient);
String name = findPerson(port, address);
// System.out.println(name);
if (in.startsWith("1")) {
String nama = new String(packet.getData(), 0, packet.getLength());
nama = nama.substring(1);
newClient = new Client(packet.getAddress(), packet.getPort(), nama);
threads.add(newClient);
String wel =
"\nWelcome "
+ newClient.nama
+ "\n "
+ "to quit type \"bye\" and to whisper use prefix @name : ";
buf = (wel).getBytes();
packet = new DatagramPacket(buf, buf.length, packet.getAddress(), packet.getPort());
socket.send(packet);
wel = " enters the room";
buf = (newClient.nama + wel).getBytes();
Broadcast(address, port, buf);
} else if (in.startsWith("@")) {
// findPort(port, address, newClient);
Whisper(newClient, packet.getData());
} else if (in.equals("bye")) {
String bye = name + " is leaving";
buf2 = bye.getBytes();
// packet = new DatagramPacket(buf,buf.length,newClient.address, newClient.port);
Broadcast(address, port, buf2);
} else {
byte[] buf3 = new byte[256];
String text =
name + "<broadcast> : " + new String(packet.getData(), 0, packet.getLength());
buf3 = text.getBytes();
Broadcast(packet.getAddress(), packet.getPort(), buf3);
}
} catch (IOException ex) {
Logger.getLogger(DatagramServer.class.getName()).log(Level.SEVERE, null, ex);
}
}
socket.close();
}
public static void doEcho(int port) throws IOException {
byte[] buf = new byte[BUF_SIZE];
DatagramPacket packet = new DatagramPacket(buf, buf.length);
DatagramSocket sock = new DatagramSocket(port);
System.out.println(
"Starting UDP echo on"
+ sock.getLocalAddress().getHostAddress()
+ ":"
+ sock.getLocalPort());
while (true) {
try {
sock.receive(packet);
sock.send(packet);
System.out.print(
"UDP From: "
+ packet.getAddress().getHostAddress()
+ ":"
+ packet.getPort()
+ "\n"
+ new String(packet.getData(), 0, packet.getLength())
+ "\n");
System.out.flush();
packet.setLength(buf.length);
// packet = new DatagramPacket(buf,buf.length);
} catch (IOException io_ex) {
}
}
}
public void run() {
final byte[] receive_buf = new byte[65535];
DatagramPacket packet = new DatagramPacket(receive_buf, receive_buf.length);
byte[] data;
ByteArrayInputStream inp_stream;
DataInputStream inp = null;
Message msg;
while (mcast_sock != null && receiver != null && Thread.currentThread().equals(receiver)) {
packet.setData(receive_buf, 0, receive_buf.length);
try {
mcast_sock.receive(packet);
data = packet.getData();
inp_stream = new ExposedByteArrayInputStream(data, 0, data.length);
inp = new DataInputStream(inp_stream);
msg = new Message();
msg.readFrom(inp);
up(new Event(Event.MSG, msg));
} catch (SocketException socketEx) {
break;
} catch (Throwable ex) {
log.error("failed receiving packet (from " + packet.getSocketAddress() + ")", ex);
} finally {
Util.close(inp);
}
}
if (log.isTraceEnabled()) log.trace("receiver thread terminated");
}
/**
* Attempts to log a client in using the authentication server. Authentication server needs to run
* on the same host as the file server.
*
* @throws IOException Error reading from socket.
*/
private void login() throws IOException {
// set up required variables
DatagramSocket clientSocket = new DatagramSocket();
InetAddress authServerIP =
InetAddress
.getLocalHost(); // because authentication server runs on same host as file server
byte[] dataToSend;
byte[] receivedData = new byte[BUFFER_SIZE];
// get username and password
String userName = inFromClient.readLine().trim(); // get username
String password = inFromClient.readLine().trim(); // get password
dataToSend = new String(userName + " " + password).getBytes();
// send the username and password for processing by authentication server
DatagramPacket packetToSend =
new DatagramPacket(dataToSend, dataToSend.length, authServerIP, AUTHENTICATION_PORT);
clientSocket.send(packetToSend);
// receive the response from the authentication server
DatagramPacket receivedPacket = new DatagramPacket(receivedData, receivedData.length);
clientSocket.receive(receivedPacket);
String receivedString = new String(receivedPacket.getData()).trim();
receivedData = receivedString.getBytes();
if (receivedString.equals("yes")) {
outToClient.writeBytes(receivedString); // successful login
} else {
outToClient.writeBytes("no"); // unsuccessful login
}
}
public void run() {
System.out.println("ExeUDPServer开始监听..." + UDP_PORT);
DatagramSocket ds = null;
try {
ds = new DatagramSocket(UDP_PORT);
} catch (BindException e) {
System.out.println("UDP端口使用中...请重关闭程序启服务器");
} catch (SocketException e) {
e.printStackTrace();
}
while (ds != null) {
DatagramPacket dp = new DatagramPacket(buf, buf.length);
try {
ds.receive(dp);
// 得到把该数据包发来的端口和Ip
int rport = dp.getPort();
InetAddress addr = dp.getAddress();
String recvStr = new String(dp.getData(), 0, dp.getLength());
System.out.println("Server receive：" + recvStr + " from " + addr + " " + rport);
// 给客户端回应
String sendStr = "echo of " + recvStr;
byte[] sendBuf;
sendBuf = sendStr.getBytes();
DatagramPacket sendPacket = new DatagramPacket(sendBuf, sendBuf.length, addr, rport);
ds.send(sendPacket);
} catch (IOException e) {
e.printStackTrace();
}
}
}
private void listen() throws Exception {
System.out.println("Listening on port: " + serverPort);
// Initialize socket
socket = new DatagramSocket(serverPort);
// While running
while (run) {
// Wait for handshake
packet = new DatagramPacket(response, response.length);
socket.receive(packet); // Blocking
// System.out.println("RT: got packet");
Packet p = new Packet(packet.getData());
if (p.isHandshake()) {
// System.out.println("RT: is handshake");
// Get client connection info
InetAddress IPAddress = packet.getAddress();
int port = packet.getPort();
// Process handshake
processHandshake(p, IPAddress, port);
// Get message
MyMessage message = getMessage();
if (message != null) {
rc.rreceive(message);
}
}
}
}
public void run() {
while (true) {
try {
DatagramSocket ClientSoc = new DatagramSocket(ClinetPortNumber);
String Command = "GET";
byte Sendbuff[] = new byte[1024];
Sendbuff = Command.getBytes();
InetAddress ServerHost = InetAddress.getLocalHost();
ClientSoc.send(new DatagramPacket(Sendbuff, Sendbuff.length, ServerHost, 5217));
byte Receivebuff[] = new byte[1024];
DatagramPacket dp = new DatagramPacket(Receivebuff, Receivebuff.length);
ClientSoc.receive(dp);
NewsMsg = new String(dp.getData(), 0, dp.getLength());
System.out.println(NewsMsg);
lblNewsHeadline.setText(NewsMsg);
Thread.sleep(5000);
ClientSoc.close();
} catch (Exception ex) {
ex.printStackTrace();
}
}
}
public void run() {
while (true) {
DatagramPacket msg = new DatagramPacket(new byte[1000], 1000);
try {
socket.receive(msg);
} catch (IOException e) {
}
;
String container = new String(msg.getData());
container = container.trim();
if (container.substring(0, container.indexOf(' ')).equals("vfd"))
CALM.box.mailAction(container.substring(container.indexOf(' ') + 1, container.length()));
else if (container.substring(0, container.indexOf(' ')).equals("dfv"))
CALM.box.mailAction2(container.substring(container.indexOf(' ') + 1, container.length()));
}
}
private String receiveDataUdp(InetSocketAddress clientAddress) throws IOException, JSONException {
EmployeeList employees = new EmployeeList();
DatagramSocket datagramServer = new DatagramSocket(clientAddress);
byte dataFromServer[] = new byte[2048];
boolean isTimeExpired = false;
datagramServer.setSoTimeout((int) SECONDS.toMillis(PROTOCOL_GROUP_TIMEOUT - 5));
System.out.println(
"[INFO] -----------------------------------------\n"
+ "[INFO] Collecting information from nodes....");
while (!isTimeExpired) {
DatagramPacket datagramPacketacket =
new DatagramPacket(dataFromServer, dataFromServer.length);
try {
datagramServer.receive(datagramPacketacket);
} catch (SocketTimeoutException e) {
System.out.println(
"[WARNING] -----------------------------------------\n"
+ "[WARNING] Waiting time expired...");
isTimeExpired = true;
continue;
}
String receivedJson = (String) deserialize(datagramPacketacket.getData());
System.out.println("[INFO] " + "Received employee in JSON: " + receivedJson);
employees.add(jsonToEmployee(receivedJson));
}
datagramServer.close();
return employeeToXml(employees);
}
public static void main(String args[]) throws Exception {
String serverHostname = args[0];
int portNumber = Integer.parseInt(args[1]);
try {
BufferedReader inFromUser = new BufferedReader(new InputStreamReader(System.in));
DatagramSocket clientSocket = new DatagramSocket();
InetAddress IPAddress = InetAddress.getByName(serverHostname);
System.out.println("Attempting to connect to " + IPAddress + ") via UDP port " + portNumber);
System.out.println("Enter \"Quit\" to exit program");
while (true) {
byte[] sendData = new byte[1024];
byte[] receiveData = new byte[1024];
System.out.print("Enter Message: ");
String sentence = inFromUser.readLine();
if (sentence.equals("Quit")) break;
sendData = sentence.getBytes();
System.out.println("Sending data to " + sendData.length + " bytes to server.");
DatagramPacket sendPacket =
new DatagramPacket(sendData, sendData.length, IPAddress, portNumber);
clientSocket.send(sendPacket);
DatagramPacket receivePacket = new DatagramPacket(receiveData, receiveData.length);
System.out.println("Waiting for return packet");
clientSocket.setSoTimeout(10000);
try {
clientSocket.receive(receivePacket);
String modifiedSentence = new String(receivePacket.getData());
InetAddress returnIPAddress = receivePacket.getAddress();
int port = receivePacket.getPort();
System.out.println("From server at: " + returnIPAddress + ":" + port);
System.out.println("Message: " + modifiedSentence);
} catch (SocketTimeoutException ste) {
System.out.println("Timeout Occurred: Packet assumed lost");
}
System.out.print("\n");
}
clientSocket.close();
} catch (UnknownHostException ex) {
System.err.println(ex);
} catch (IOException ex) {
System.err.println(ex);
}
}
/**
* Initializes a new <tt>DatagramPacket</tt> instance which is a clone of a specific
* <tt>DatagramPacket</tt> i.e. the properties of the clone <tt>DatagramPacket</tt> are clones of
* the specified <tt>DatagramPacket</tt>.
*
* @param p the <tt>DatagramPacket</tt> to clone
* @return a new <tt>DatagramPacket</tt> instance which is a clone of the specified
* <tt>DatagramPacket</tt>
*/
public static DatagramPacket clone(DatagramPacket p) {
synchronized (p) {
byte[] pData = p.getData();
byte[] cData = (pData == null) ? null : pData.clone();
return new DatagramPacket(cData, p.getOffset(), p.getLength(), p.getAddress(), p.getPort());
}
}
@Scheduled(fixedDelay = Integer.MAX_VALUE)
public void startListening() {
if (disable) {
return;
}
log.info("Starting UPNP Discovery Listener");
try (DatagramSocket responseSocket = new DatagramSocket(upnpResponsePort);
MulticastSocket upnpMulticastSocket = new MulticastSocket(UPNP_DISCOVERY_PORT); ) {
InetSocketAddress socketAddress =
new InetSocketAddress(UPNP_MULTICAST_ADDRESS, UPNP_DISCOVERY_PORT);
Enumeration<NetworkInterface> ifs = NetworkInterface.getNetworkInterfaces();
while (ifs.hasMoreElements()) {
NetworkInterface xface = ifs.nextElement();
Enumeration<InetAddress> addrs = xface.getInetAddresses();
String name = xface.getName();
int IPsPerNic = 0;
while (addrs.hasMoreElements()) {
InetAddress addr = addrs.nextElement();
log.debug(name + " ... has addr " + addr);
if (InetAddressUtils.isIPv4Address(addr.getHostAddress())) {
IPsPerNic++;
}
}
log.debug("Checking " + name + " to our interface set");
if (IPsPerNic > 0) {
upnpMulticastSocket.joinGroup(socketAddress, xface);
log.debug("Adding " + name + " to our interface set");
}
}
while (true) { // trigger shutdown here
byte[] buf = new byte[1024];
DatagramPacket packet = new DatagramPacket(buf, buf.length);
upnpMulticastSocket.receive(packet);
String packetString = new String(packet.getData());
if (isSSDPDiscovery(packetString)) {
log.debug(
"Got SSDP Discovery packet from "
+ packet.getAddress().getHostAddress()
+ ":"
+ packet.getPort());
sendUpnpResponse(responseSocket, packet.getAddress(), packet.getPort());
}
}
} catch (IOException e) {
log.error("UpnpListener encountered an error. Shutting down", e);
ConfigurableApplicationContext context =
(ConfigurableApplicationContext) UpnpListener.this.applicationContext;
context.close();
}
log.info("UPNP Discovery Listener Stopped");
}
private String lookupFarm() {
if (Response != null) {
if (Response.isStillValid()) {
return Response.getFarmID();
}
Response = null;
}
try {
InetAddress CDPServer;
DatagramSocket Socket;
CDPQuery Query;
byte[] Buffer;
DatagramPacket Packet;
/* Get the IP address of the CDP servers. */
CDPServer = InetAddress.getByName(CDPServerName);
/* Create a UDP socket for the CDP query. */
Socket = new DatagramSocket();
Socket.setSoTimeout(CDPTimeout);
/* Build the CDP query. */
Query = new CDPQuery(Constants.AZUREUS_NAME + " " + Constants.AZUREUS_VERSION);
Buffer = Query.getBytes();
Packet = new DatagramPacket(Buffer, Buffer.length, CDPServer, CDPPort);
/* Send the query to the CDP server. */
Socket.send(Packet);
/* Receive the CDP response. */
Buffer = new byte[CDPResponse.MaxSize];
Packet.setData(Buffer);
Socket.receive(Packet);
if (Packet.getAddress() != CDPServer || Packet.getPort() != CDPPort)
throw (new Exception("CDP server address mismatch on response"));
/* Parse the CDP response. */
Response = new CDPResponse(Packet.getData());
/* Return the farmID from the CDP response. */
return Response.getFarmID();
} catch (Throwable Excpt) {
if (Excpt instanceof UnknownHostException) {
} else {
Excpt.printStackTrace();
}
return "default";
}
}
public static DatagramPacket makePacket(char c1[], InetAddress inetAddress) {
// byte[] sendMsg=(c1).toString().getBytes();
String s1 = new String(c1);
System.out.println(c1);
byte[] sendMsg = s1.getBytes();
DatagramPacket packet =
new DatagramPacket(sendMsg, sendMsg.length, inetAddress, client.PORT_NUMBER_CLIENT);
System.out.println(new String(packet.getData()));
return packet;
}
public void respond(DatagramPacket packet) {
byte[] data = new byte[packet.getLength()];
System.arraycopy(packet.getData(), 0, data, 0, packet.getLength());
try {
String s = new String(data, "8859_1");
System.out.println(packet.getAddress() + " at port " + packet.getPort() + " says " + s);
} catch (java.io.UnsupportedEncodingException ex) {
// This shouldn't happen
}
}
public static void main(String args[]) throws Exception {
DatagramSocket ds = new DatagramSocket(3000);
byte[] buf = new byte[1024];
DatagramPacket dp = new DatagramPacket(buf, 1024);
ds.receive(dp);
String str = new String(dp.getData(), 0, dp.getLength());
System.out.println(str);
ds.close();
}
private void listenToServer() throws IOException {
do {
Arrays.fill(rcvPacket.getData(), (byte) 0);
requestSocket.receive(rcvPacket);
message = new String(rcvPacket.getData());
System.out.println("server>" + message);
if (PACMANWINS.equals(message)) {
board.gameState = 1;
} else if (GHOSTWINS.equals(message)) {
board.gameState = 2;
} else {
// create new thread so that we keep listening to server as
// board is being updated
new Thread() {
public void run() {
board.changeClientsState(message);
}
}.start();
}
} while (board.gameState == 0);
}
SNMP_Parser(DatagramPacket dp) {
data = new byte[dp.getLength()];
int i;
for (i = 0; i < dp.getLength(); i++) {
data[i] = dp.getData()[i];
}
pointer = 0;
data_remaining = data.length;
}
public static void main(String[] args) throws Exception {
InetAddress addr = InetAddress.getByName("230.0.0.1");
MulticastSocket soc = new MulticastSocket(2056);
soc.joinGroup(addr);
DatagramPacket dp = new DatagramPacket(new byte[80], 80);
for (int i = 0; i < 5; i++) {
soc.receive(dp);
String msg = new String(dp.getData(), 0, dp.getLength());
System.out.println(msg);
}
soc.leaveGroup(addr);
soc.close();
}
public static void main(String[] args) {
try (DatagramSocket socket = new DatagramSocket(0)) {
socket.setSoTimeout(10000);
InetAddress host = InetAddress.getByName(HOSTNAME);
DatagramPacket request = new DatagramPacket(new byte[1], 1, host, PORT);
DatagramPacket response = new DatagramPacket(new byte[1024], 1024);
socket.send(request);
socket.receive(response);
String result = new String(response.getData(), 0, response.getLength(), "US-ASCII");
System.out.println(result);
} catch (IOException ex) {
ex.printStackTrace();
}
}
private void doRecv(DatagramPacket pack, int flags) throws IOException {
IoBridge.recvfrom(
false,
fd,
pack.getData(),
pack.getOffset(),
pack.getLength(),
flags,
pack,
isNativeConnected);
if (isNativeConnected) {
updatePacketRecvAddress(pack);
}
}
public void run() {
byte buffer[] = new byte[1024];
DatagramPacket dp = new DatagramPacket(buffer, buffer.length);
String s;
boolean done = false;
try {
while (!done) {
ds.receive(dp);
s = new String(dp.getData(), 0, dp.getLength());
System.out.println("RCD MSG:" + s);
if (s == "-") done = true;
}
} catch (IOException e) {
}
}
/**
* Creates a new <tt>RawPacket</tt> from a specific <tt>DatagramPacket</tt> in order to have this
* instance receive its packet data through its {@link #read(byte[], int, int)} method. Returns an
* array of <tt>RawPacket</tt> with the created packet as its first element (and <tt>null</tt> for
* the other elements).
*
* <p>Allows extenders to intercept the packet data and possibly filter and/or modify it.
*
* @param datagramPacket the <tt>DatagramPacket</tt> containing the packet data
* @return an array of <tt>RawPacket</tt> containing the <tt>RawPacket</tt> which contains the
* packet data of the specified <tt>DatagramPacket</tt> as its first element.
*/
protected RawPacket[] createRawPacket(DatagramPacket datagramPacket) {
RawPacket[] pkts = rawPacketArrayPool.poll();
if (pkts == null) pkts = new RawPacket[1];
RawPacket pkt = rawPacketPool.poll();
if (pkt == null) pkt = new RawPacket();
pkt.setBuffer(datagramPacket.getData());
pkt.setFlags(0);
pkt.setLength(datagramPacket.getLength());
pkt.setOffset(datagramPacket.getOffset());
pkts[0] = pkt;
return pkts;
}
private void readSendPacket(DatagramPacket sendPacket) {
// print log
System.out.println("Server: sending a packet...");
System.out.println("To host: " + sendPacket.getAddress());
System.out.println("Destination host port: " + sendPacket.getPort());
Request req = new Request(sendPacket.getData(), sendPacket.getLength());
String reqString = req.getString();
byte reqBytes[] = req.getByteArray();
System.out.print("String: '" + reqString + "'\n");
System.out.print("Bytes: '");
int i = 0;
while (i < req.getLength()) {
System.out.print(reqBytes[i++]);
}
System.out.print("'\n");
}