/**
* 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);
}
}
}
}
private void sendPacket() {
long start = System.nanoTime();
byte[] hpsdrdata = getPacketToSend();
try {
if (rxdatagram == null)
rxdatagram =
new DatagramPacket(hpsdrdata, hpsdrdata.length, this.remoteAddress, this.remotePort);
else {
rxdatagram.setData(hpsdrdata);
rxdatagram.setLength(hpsdrdata.length);
rxdatagram.setAddress(this.remoteAddress);
rxdatagram.setPort(this.remotePort);
}
socket.setReuseAddress(true);
socket.send(rxdatagram);
double time = (System.nanoTime() - start) / 100000d;
// if (time > 50.0)
// System.out.println("samen stellen packet " + time + " msec");
} catch (SocketException se) {
System.out.println("se exception");
} catch (IOException ioe) {
System.out.println("io exception");
}
}
public static void main(String[] args) throws IOException {
String strSend = "Hello ANDROID";
byte[] buf = new byte[1024];
// 服务端在3000端口监听接收到的数据
DatagramSocket ds = new DatagramSocket(3000);
// 接收从客户端发送过来的数据
DatagramPacket dpReceive = new DatagramPacket(buf, 1024);
System.out.println("server is on，waiting for client to send data......");
boolean f = true;
while (f) {
// 服务器端接收来自客户端的数据
ds.receive(dpReceive);
System.out.println("server received data from client：");
String strReceive =
new String(dpReceive.getData(), 0, dpReceive.getLength())
+ " from "
+ dpReceive.getAddress().getHostAddress()
+ ":"
+ dpReceive.getPort();
System.out.println(strReceive);
// 数据发动到客户端的3000端口
DatagramPacket dpSend =
new DatagramPacket(strSend.getBytes(), strSend.length(), dpReceive.getAddress(), 9000);
ds.send(dpSend);
// 由于dp_receive在接收了数据之后，其内部消息长度值会变为实际接收的消息的字节数，
// 所以这里要将dp_receive的内部消息长度重新置为1024
dpReceive.setLength(1024);
}
ds.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 static void main(String[] args) throws Exception {
int localPort = 40000;
int port = 50000;
String host = "localhost";
String msg = "Hallo World! Random: " + rndmFromRage(0, 99);
if (args.length == 4) {
localPort = Integer.parseInt(args[0]);
host = args[1];
port = Integer.parseInt(args[2]);
msg = args[3];
}
System.out.println("(Sender) starting on port: " + localPort);
try (DatagramSocket socket = new DatagramSocket(localPort)) {
System.out.println("(Sender) sending: '" + msg + "' to: " + host + ":" + port);
InetAddress addr = InetAddress.getByName(host);
DatagramPacket packet = new DatagramPacket(new byte[BUFFER_SIZE], BUFFER_SIZE, addr, port);
byte[] data = msg.getBytes();
packet.setData(data);
packet.setLength(data.length);
socket.send(packet);
}
}
public void run() {
DatagramPacket dataPacket = null;
try {
udpSocket = new DatagramSocket(DEFAULT_PORT);
dataPacket = new DatagramPacket(buffer, MAX_DATA_PACKET_LENGTH);
byte[] data = dataString.getBytes();
dataPacket.setData(data);
dataPacket.setLength(data.length);
dataPacket.setPort(DEFAULT_PORT);
InetAddress broadcastAddr;
String ipAddress = iA.getIpAddress();
broadcastAddr = InetAddress.getByName(ipAddress);
dataPacket.setAddress(broadcastAddr);
} catch (Exception e) {
Log.e(LOG_TAG, e.toString());
}
// while( start ){
try {
udpSocket.send(dataPacket);
sleep(10);
} catch (Exception e) {
Log.e(LOG_TAG, e.toString());
}
// }
udpSocket.close();
}
public void run() {
try {
socket = new DatagramSocket(port);
byte[] buffer = new byte[maxPacketSize];
DatagramPacket packet = new DatagramPacket(buffer, buffer.length);
while (isRunning) {
socket.receive(packet);
HaleUDPInputDeviceEvent event =
new HaleUDPInputDeviceEvent(packet.getAddress().getHostName(), packet.getData());
if (event.isValid()) {
this.notifyListeners(event);
logger.debug(event);
} else {
logger.error("Invalid HaleUDPSensorEvent: " + event);
}
packet.setLength(buffer.length);
}
} catch (SocketException e) {
if (isRunning) {
logger.error(e);
}
} catch (IOException e) {
logger.error(e);
} finally {
isRunning = false;
thread = null;
}
}
public static boolean sessionDeleteClient(SessionTable session, Server e) throws IOException {
DatagramSocket rpcSocket = new DatagramSocket();
rpcSocket.setSoTimeout(2000); // Timeout after 2 seconds
String callID = UUID.randomUUID().toString(); // generate unique id for call
byte[] outBuf = new byte[512];
// fill outBuf with callId, operationSESSIONDelete, sessionID, sessionVersionNum
String outStr = callID + "+2+" + session.getSid() + "+" + session.getVersion();
outBuf = string2byte(outStr);
// for(Server e : s){
DatagramPacket sendPkt = new DatagramPacket(outBuf, outBuf.length, e.ip, e.port);
rpcSocket.send(sendPkt);
// }
byte[] inBuf = new byte[512];
DatagramPacket recvPkt = new DatagramPacket(inBuf, inBuf.length);
try {
do {
recvPkt.setLength(inBuf.length);
rpcSocket.receive(recvPkt);
} while (!byte2string(recvPkt.getData())
.equals("ok")); // the callId in inBuf is not the expected one
} catch (InterruptedIOException iioe) {
// timeout
iioe.printStackTrace();
return false;
} catch (SocketException e0) {
// TODO Auto-generated catch block
e0.printStackTrace();
return false;
}
rpcSocket.close();
return true;
}
/**
* This is a special method to perform a more efficient packet receive. It should only be used
* after calling {@link #beginBufferedOps beginBufferedOps() }. beginBufferedOps() initializes a
* set of buffers used internally that prevent the new allocation of a DatagramPacket and byte
* array for each send and receive. To use these buffers you must call the bufferedReceive() and
* bufferedSend() methods instead of send() and receive(). You must also be certain that you don't
* manipulate the resulting packet in such a way that it interferes with future buffered
* operations. For example, a TFTPDataPacket received with bufferedReceive() will have a reference
* to the internal byte buffer. You must finish using this data before calling bufferedReceive()
* again, or else the data will be overwritten by the the call.
*
* <p>
*
* @return The TFTPPacket received.
* @throws InterruptedIOException If a socket timeout occurs. The Java documentation claims an
* InterruptedIOException is thrown on a DatagramSocket timeout, but in practice we find a
* SocketException is thrown. You should catch both to be safe.
* @throws SocketException If a socket timeout occurs. The Java documentation claims an
* InterruptedIOException is thrown on a DatagramSocket timeout, but in practice we find a
* SocketException is thrown. You should catch both to be safe.
* @throws IOException If some other I/O error occurs.
* @throws TFTPPacketException If an invalid TFTP packet is received. *
*/
public final TFTPPacket bufferedReceive()
throws IOException, InterruptedIOException, SocketException, TFTPPacketException {
__receiveDatagram.setData(__receiveBuffer);
__receiveDatagram.setLength(__receiveBuffer.length);
_socket_.receive(__receiveDatagram);
return TFTPPacket.newTFTPPacket(__receiveDatagram);
}
/* Send RTP packet over the network */
public void send(int length) throws IOException {
updateSequence();
upack.setLength(length);
usock.send(upack);
if (upts) {
upts = false;
buffer[1] -= 0x80;
}
}
public void run() {
try {
byte buf[] = new byte[DNSConstants.MAX_MSG_ABSOLUTE];
DatagramPacket packet = new DatagramPacket(buf, buf.length);
while (this._jmDNSImpl.getState() != DNSState.CANCELED) {
packet.setLength(buf.length);
this._jmDNSImpl.getSocket().receive(packet);
if (this._jmDNSImpl.getState() == DNSState.CANCELED) {
break;
}
try {
if (this._jmDNSImpl.getLocalHost().shouldIgnorePacket(packet)) {
continue;
}
DNSIncoming msg = new DNSIncoming(packet);
logger.finest("SocketListener.run() JmDNS in:" + msg.print(true));
this._jmDNSImpl.ioLock();
try {
if (msg.isQuery()) {
if (packet.getPort() != DNSConstants.MDNS_PORT) {
this._jmDNSImpl.handleQuery(msg, packet.getAddress(), packet.getPort());
}
this._jmDNSImpl.handleQuery(msg, this._jmDNSImpl.getGroup(), DNSConstants.MDNS_PORT);
} else {
this._jmDNSImpl.handleResponse(msg);
}
} finally {
this._jmDNSImpl.ioUnlock();
}
} catch (IOException e) {
logger.log(Level.WARNING, "run() exception ", e);
}
}
} catch (IOException e) {
if (this._jmDNSImpl.getState() != DNSState.CANCELED) {
logger.log(Level.WARNING, "run() exception ", e);
this._jmDNSImpl.recover();
}
}
// jP: 20010-01-18. Per issue #2933183. If this thread was stopped
// by closeMulticastSocket, we need to signal the other party via
// the jmDNS monitor. The other guy will then check to see if this
// thread has died.
// Note: This is placed here to avoid locking the IoLock object and
// 'this' instance together.
synchronized (this._jmDNSImpl) {
this._jmDNSImpl.notifyAll();
}
}
public static SessionTable sessionReadClient(String sessId, int sessVersion, ArrayList<Server> s)
throws IOException {
SessionTable session = null;
DatagramSocket rpcSocket = new DatagramSocket();
rpcSocket.setSoTimeout(6000); // Timeout after 2 seconds
String callID = UUID.randomUUID().toString(); // generate unique id for call
byte[] outBuf = new byte[512];
// fill outBuf with callId, operationSESSIONREAD, sessionID, sessionVersionNum
String outStr = callID + "+0+" + sessId + "+" + sessVersion;
outBuf = string2byte(outStr);
for (Server e : s) {
// InetAddress ip = InetAddress.getByName("127.0.0.1");
DatagramPacket sendPkt = new DatagramPacket(outBuf, outBuf.length, e.ip, e.port);
// System.out.println("ip: "+e.ip.getHostAddress());
System.out.println("port: " + e.port);
rpcSocket.send(sendPkt);
System.out.println("packet sent to server");
}
byte[] inBuf = new byte[512];
DatagramPacket recvPkt = new DatagramPacket(inBuf, inBuf.length);
String response = "";
try {
do {
recvPkt.setLength(inBuf.length);
rpcSocket.receive(recvPkt);
System.out.println("packet received from server");
response = byte2string(inBuf);
String[] strs = response.split("[+]");
session = new SessionTable(sessId, sessVersion);
session.setVersion(Integer.parseInt(strs[1]));
session.setMessage(strs[2]);
session.setExpiration(Timestamp.valueOf(strs[3]));
} while (response.equals("")
|| !byte2string(recvPkt.getData())
.split("[+]")[0]
.equals(callID)); // the callId in inBuf is not the expected one
} catch (InterruptedIOException iioe) {
// timeout
recvPkt = null;
System.out.println("time out");
} catch (SocketException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
rpcSocket.close();
return session;
}
public static void ReceiveUDP() {
try {
int port = 9040;
// Create a socket to listen on the port.
DatagramSocket dsocket = new DatagramSocket(port);
// Create a buffer to read datagrams into. If a
// packet is larger than this buffer, the
// excess will simply be discarded!
// TODO: what is the best size for this buffer?
byte[] buffer = new byte[256];
// Create a packet to receive data into the buffer
DatagramPacket packet = new DatagramPacket(buffer, buffer.length);
// Now loop forever, waiting to receive packets and printing them.
while (true) {
// Wait to receive a datagram
dsocket.receive(packet);
// Convert the contents to a string, and display them
String msg = new String(buffer, 0, packet.getLength());
// assuming that I know the first 12 bytes are for IP
// and the following 8 bytes are for score
String IP = msg.substring(0, 13);
byte[] resource = new byte[8];
for (int i = 0; i < 8; ++i) {
resource[i] = buffer[13 + i];
}
double score = ByteBuffer.wrap(resource).getDouble();
NodeManager.Update(IP, score);
// System.out.println(packet.getAddress().getHostName() + ": "
// + msg);
// Reset the length of the packet before reusing it.
packet.setLength(buffer.length);
}
} catch (Exception e) {
System.err.println(e);
}
}
/**
* * This is a method only available within the package for implementing efficient datagram
* transport by elminating buffering. It takes a datagram as an argument, and a byte buffer in
* which to store the raw datagram data. Inside the method, the data is set as the datagram's data
* and the datagram returned.
*
* <p>
*
* @param datagram The datagram to create.
* @param data The buffer to store the packet and to use in the datagram.
* @return The datagram argument. *
*/
final DatagramPacket _newDatagram(DatagramPacket datagram, byte[] data) {
int fileLength, modeLength;
fileLength = _filename.length();
modeLength = _modeBytes[_mode].length;
data[0] = 0;
data[1] = (byte) _type;
System.arraycopy(_filename.getBytes(), 0, data, 2, fileLength);
data[fileLength + 2] = 0;
System.arraycopy(_modeBytes[_mode], 0, data, fileLength + 3, modeLength);
datagram.setAddress(_address);
datagram.setPort(_port);
datagram.setData(data);
datagram.setLength(fileLength + modeLength + 3);
return datagram;
}
public void run() {
byte[] buf = new byte[BUF_SIZE];
DatagramPacket incomingData = new DatagramPacket(buf, buf.length);
try {
while (true) {
sock.receive(incomingData);
System.out.println(
"UDP From:"
+ incomingData.getAddress().getHostAddress()
+ ":"
+ incomingData.getPort());
System.out.println(new String(incomingData.getData(), 0, incomingData.getLength()));
System.out.flush();
incomingData.setLength(buf.length);
}
} catch (IOException io_ex) {
io_ex.printStackTrace();
}
}
public void process(DatagramPacket packet) throws Exception {
byte[] data = packet.getData();
int datalen = packet.getLength();
InetAddress address = packet.getAddress();
if (datalen <= 0) {
LOGGER.warn("Empty Packet arrived from {}", packet.getAddress());
return;
}
String message = new String(data, 0, datalen);
LOGGER.info("server query : [{}] ({}) {}", address, message.length(), message);
Args args = new Args(message);
message = (args.argc() == 0) ? "" : (String) remoteCommands.command(args);
if (message != null) {
LOGGER.info("server reply : {}", message);
data = message.getBytes();
packet.setData(data);
packet.setLength(data.length);
}
}
public void run() {
DatagramPacket dataPacket = null;
// 时间戳
IPCameraApplication.setT1(System.currentTimeMillis());
try {
udpSocket = new DatagramSocket(IPCameraApplication.PHONE_DEFAULT_PORT);
dataPacket = new DatagramPacket(buffer, IPCameraApplication.MAX_DATA_PACKET_LENGTH);
dataPacket.setData(data);
dataPacket.setLength(data.length);
dataPacket.setPort(IPCameraApplication.DEVICE_DEFAULT_PORT);
InetAddress broadcastAddr;
broadcastAddr = InetAddress.getByName("255.255.255.255");
dataPacket.setAddress(broadcastAddr);
} catch (Exception e) {
Log.e(TAG, e.toString());
}
// if(MyApplication.UDP_BROADCAST_START) {
// while(true){//能确保在30秒内接收成功就不用循环发送
try {
udpSocket.send(dataPacket);
Log.d(TAG, "成功发送一次UDP广播");
// sleep(3000);
} catch (Exception e) {
Log.e(TAG, e.toString());
}
// }
// }else{
if (udpSocket != null) {
udpSocket.close();
}
// }
}
/**
* Listens for incoming datagrams, stores them for reading by the <tt>read</tt> method and
* notifies the local <tt>transferHandler</tt> that there's data to be read.
*/
public void run() {
DatagramPacket p = new DatagramPacket(buffer, 0, PACKET_RECEIVE_BUFFER_LENGTH);
while (!closed) {
try {
// http://code.google.com/p/android/issues/detail?id=24765
if (OSUtils.IS_ANDROID) p.setLength(PACKET_RECEIVE_BUFFER_LENGTH);
receivePacket(p);
} catch (IOException e) {
ioError = true;
break;
}
/*
* Do the DatagramPacketFilters accept the received DatagramPacket?
*/
DatagramPacketFilter[] datagramPacketFilters = getDatagramPacketFilters();
boolean accept;
if (!enabled) accept = false;
else if (datagramPacketFilters == null) accept = true;
else {
accept = true;
for (int i = 0; i < datagramPacketFilters.length; i++) {
try {
if (!datagramPacketFilters[i].accept(p)) {
accept = false;
break;
}
} catch (Throwable t) {
if (t instanceof ThreadDeath) throw (ThreadDeath) t;
}
}
}
if (accept) {
RawPacket pkts[] = createRawPacket(p);
for (int i = 0; i < pkts.length; i++) {
RawPacket pkt = pkts[i];
pkts[i] = null;
if (pkt != null) {
if (pkt.isInvalid()) {
/*
* Return pkt to the pool because it is invalid and,
* consequently, will not be made available to
* reading.
*/
poolRawPacket(pkt);
} else {
RawPacket oldPkt;
synchronized (pktSyncRoot) {
oldPkt = this.pkt;
this.pkt = pkt;
}
if (oldPkt != null) {
/*
* Return oldPkt to the pool because it was made
* available to reading and it was not read.
*/
poolRawPacket(oldPkt);
}
if (videoRecorder != null) videoRecorder.recordData(pkt);
if ((transferHandler != null) && !closed) {
try {
transferHandler.transferData(this);
} catch (Throwable t) {
/*
* XXX We cannot allow transferHandler to
* kill us.
*/
if (t instanceof ThreadDeath) {
throw (ThreadDeath) t;
} else {
logger.warn("An RTP packet may have not been" + " fully handled.", t);
}
}
}
}
}
}
rawPacketArrayPool.offer(pkts);
}
}
}
/**
* * Receives echoed data and returns its length. The data may be divided up among multiple
* datagrams, requiring multiple calls to receive. Also, the UDP packets will not necessarily
* arrive in the same order they were sent.
*
* <p>
*
* @return Length of actual data received.
* @exception IOException If an error occurs while receiving the data. *
*/
public int receive(byte[] data, int length) throws IOException {
__receivePacket.setData(data);
__receivePacket.setLength(length);
_socket_.receive(__receivePacket);
return __receivePacket.getLength();
}
public Vote lookForLeader() throws InterruptedException {
try {
self.jmxLeaderElectionBean = new LeaderElectionBean();
MBeanRegistry.getInstance().register(self.jmxLeaderElectionBean, self.jmxLocalPeerBean);
} catch (Exception e) {
LOG.warn("Failed to register with JMX", e);
self.jmxLeaderElectionBean = null;
}
try {
self.setCurrentVote(new Vote(self.getId(), self.getLastLoggedZxid()));
// We are going to look for a leader by casting a vote for ourself
byte requestBytes[] = new byte[4];
ByteBuffer requestBuffer = ByteBuffer.wrap(requestBytes);
byte responseBytes[] = new byte[28];
ByteBuffer responseBuffer = ByteBuffer.wrap(responseBytes);
/* The current vote for the leader. Initially me! */
DatagramSocket s = null;
try {
s = new DatagramSocket();
s.setSoTimeout(200);
} catch (SocketException e1) {
LOG.error("Socket exception when creating socket for leader election", e1);
System.exit(4);
}
DatagramPacket requestPacket = new DatagramPacket(requestBytes, requestBytes.length);
DatagramPacket responsePacket = new DatagramPacket(responseBytes, responseBytes.length);
HashMap<InetSocketAddress, Vote> votes =
new HashMap<InetSocketAddress, Vote>(self.quorumPeers.size());
int xid = epochGen.nextInt();
while (self.running) {
votes.clear();
requestBuffer.clear();
requestBuffer.putInt(xid);
requestPacket.setLength(4);
HashSet<Long> heardFrom = new HashSet<Long>();
for (QuorumServer server : self.quorumPeers.values()) {
LOG.info("Server address: " + server.addr);
try {
requestPacket.setSocketAddress(server.addr);
} catch (IllegalArgumentException e) {
// Sun doesn't include the address that causes this
// exception to be thrown, so we wrap the exception
// in order to capture this critical detail.
throw new IllegalArgumentException(
"Unable to set socket address on packet, msg:"
+ e.getMessage()
+ " with addr:"
+ server.addr,
e);
}
try {
s.send(requestPacket);
responsePacket.setLength(responseBytes.length);
s.receive(responsePacket);
if (responsePacket.getLength() != responseBytes.length) {
LOG.error("Got a short response: " + responsePacket.getLength());
continue;
}
responseBuffer.clear();
int recvedXid = responseBuffer.getInt();
if (recvedXid != xid) {
LOG.error("Got bad xid: expected " + xid + " got " + recvedXid);
continue;
}
long peerId = responseBuffer.getLong();
heardFrom.add(peerId);
// if(server.id != peerId){
Vote vote = new Vote(responseBuffer.getLong(), responseBuffer.getLong());
InetSocketAddress addr = (InetSocketAddress) responsePacket.getSocketAddress();
votes.put(addr, vote);
// }
} catch (IOException e) {
LOG.warn("Ignoring exception while looking for leader", e);
// Errors are okay, since hosts may be
// down
}
}
ElectionResult result = countVotes(votes, heardFrom);
if (result.winner.id >= 0) {
self.setCurrentVote(result.vote);
if (result.winningCount > (self.quorumPeers.size() / 2)) {
self.setCurrentVote(result.winner);
s.close();
Vote current = self.getCurrentVote();
self.setPeerState(
(current.id == self.getId()) ? ServerState.LEADING : ServerState.FOLLOWING);
if (self.getPeerState() == ServerState.FOLLOWING) {
Thread.sleep(100);
}
return current;
}
}
Thread.sleep(1000);
}
return null;
} finally {
try {
if (self.jmxLeaderElectionBean != null) {
MBeanRegistry.getInstance().unregister(self.jmxLeaderElectionBean);
}
} catch (Exception e) {
LOG.warn("Failed to unregister with JMX", e);
}
self.jmxLeaderElectionBean = null;
}
}
private void startListen() {
while (true) {
try {
in_sock.receive(in_packet);
debugPrint("Received a packet");
String askString = new String(buf_in.clone());
if (askString.startsWith(ASK_STRING)) {
DataInputStream dis =
new DataInputStream(
new ByteArrayInputStream(
buf_in, ASK_STRING.length(), buf_in.length - ASK_STRING.length()));
int type = dis.readInt();
int index = -1;
if (type == 2) {
index = dis.readInt();
}
boolean OkResult;
int responseInt = -1;
double responseDouble = 0;
try {
if (type == 1) {
responseInt = m_productContainer.count();
responseDouble = MainClass.avgPrice(m_productContainer);
} else if (type == 2) {
Product product = (Product) m_productContainer.getProduct(index);
if (product == null) {
responseInt = -1;
responseDouble = 0;
} else {
responseInt = index;
responseDouble = product.getPrice();
}
} else {
throw new RuntimeException();
}
OkResult = true;
} catch (Exception e) {
OkResult = false;
}
if (OkResult) {
ByteArrayOutputStream bs = new ByteArrayOutputStream();
DataOutputStream dos = new DataOutputStream(bs);
dos.writeBytes(RESPONSE_STRING);
dos.writeInt(type);
dos.writeInt(responseInt);
dos.writeDouble(responseDouble);
buf_out = bs.toByteArray();
out_packet.setData(buf_out);
out_packet.setLength(buf_out.length);
out_packet.setPort(2001);
out_packet.setAddress(in_packet.getAddress());
out_sock.send(out_packet);
}
}
} catch (Exception e) {
e.printStackTrace();
}
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
/** The listening thread's run method. */
@Override
public void run() {
DatagramPacket packet = null;
while (this.running) {
try {
IceSocketWrapper localSock;
synchronized (sockLock) {
if (!running) return;
localSock = this.sock;
}
/*
* Make sure localSock's receiveBufferSize is taken into
* account including after it gets changed.
*/
int receiveBufferSize = 1500;
/*
if(localSock.getTCPSocket() != null)
{
receiveBufferSize = localSock.getTCPSocket().
getReceiveBufferSize();
}
else if(localSock.getUDPSocket() != null)
{
receiveBufferSize = localSock.getUDPSocket().
getReceiveBufferSize();
}
*/
if (packet == null) {
packet = new DatagramPacket(new byte[receiveBufferSize], receiveBufferSize);
} else {
byte[] packetData = packet.getData();
if ((packetData == null) || (packetData.length < receiveBufferSize)) {
packet.setData(new byte[receiveBufferSize], 0, receiveBufferSize);
} else {
/*
* XXX Tell the packet it is large enough because the
* socket will not look at the length of the data array
* property and will just respect the length property.
*/
packet.setLength(receiveBufferSize);
}
}
localSock.receive(packet);
// get lost if we are no longer running.
if (!running) return;
logger.finest("received datagram");
RawMessage rawMessage =
new RawMessage(
packet.getData(),
packet.getLength(),
new TransportAddress(
packet.getAddress(), packet.getPort(), listenAddress.getTransport()),
listenAddress);
messageQueue.add(rawMessage);
} catch (SocketException ex) {
if (running) {
logger.log(
Level.WARNING, "Connector died: " + listenAddress + " -> " + remoteAddress, ex);
stop();
// Something wrong has happened
errorHandler.handleFatalError(
this, "A socket exception was thrown" + " while trying to receive a message.", ex);
} else {
// The exception was most probably caused by calling
// this.stop().
}
} catch (ClosedChannelException cce) {
logger.log(Level.WARNING, "A net access point has gone useless:", cce);
stop();
errorHandler.handleFatalError(
this, "ClosedChannelException occurred while listening" + " for messages!", cce);
} catch (IOException ex) {
logger.log(Level.WARNING, "A net access point has gone useless:", ex);
errorHandler.handleError(ex.getMessage(), ex);
// do not stop the thread;
} catch (Throwable ex) {
logger.log(Level.WARNING, "A net access point has gone useless:", ex);
stop();
errorHandler.handleFatalError(
this, "Unknown error occurred while listening for messages!", ex);
}
}
}
@Override
public void run() {
// TODO Auto-generated method stub
while (running) {
if (isDebug) Log.i(TAG, "5s扫描设备>>>>>>>>>>>>" + Thread.currentThread());
receive = 50; // 最大接收数量
isSend = false;
String recestr = null;
try {
listDevices.clear();
sendSocket = new DatagramSocket();
sendSocket.setBroadcast(true);
sendSocket.setSoTimeout(3000);
sendSocket.send(sendPacket);
while (receive-- > 0) {
sendSocket.receive(recePacket);
recestr = new String(recedata, recePacket.getOffset(), recePacket.getLength());
if (recestr.startsWith(DISCOVERY_RESP)) {
Device device = new Device();
device.setDeviceName(recestr.substring(9));
device.setDeviceIp(recePacket.getAddress().getHostAddress());
if (listDevices.indexOf(device) < 0) {
listDevices.add(device);
if (device.getDeviceIp().equals("10.8.8.1")) {
isSend = true;
if (isDebug) Log.i(TAG, "扫描到10.8.8.1" + listDevices + "|" + Thread.currentThread());
sendResult();
break;
}
}
}
// 每次接收完UDP数据后，重置长度。否则可能会导致下次收到数据包被截断。
recePacket.setLength(default_bufferSize);
}
} catch (SocketTimeoutException e) {
if (isDebug) Log.i(TAG, "扫描3s超时" + listDevices + "|" + Thread.currentThread());
if (!isSend) {
sendResult();
}
} catch (SocketException e) {
receive = 0;
if (isDebug) Log.i(TAG, "SocketException>>>>>>" + Thread.currentThread());
if (mScanListener != null) {
mScanListener.scanException();
}
} catch (IOException e) {
receive = 0;
if (isDebug) Log.i(TAG, "SocketException>>>>>>" + Thread.currentThread());
if (mScanListener != null) {
mScanListener.scanException();
}
}
sendSocket.close();
if (wipicoVersion >= 2) {
// 版本2才进行SSID 扫描
List<ScanResult> listScanResults = WifiAdmin.getInstance(mContext).getScanResults();
if (listScanResults != null) {
for (ScanResult bean : listScanResults) {
if (DeviceUtil.isMatchSSID(DeviceUtil.ssidCorrect(bean.SSID))) {
listWifiDevices.add(
new Device(DeviceUtil.ssidCorrect(bean.SSID), bean.capabilities, null));
}
}
}
sendWifiResult();
}
try {
Thread.sleep(5000);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
public static void main(String[] args) throws IOException {
long start = System.currentTimeMillis();
long used = 0;
long total = 10000000;
long step = 2000;
int port = 8080;
// Create a socket to listen on the port.
DatagramSocket dsocket = new DatagramSocket(port, InetAddress.getByName("192.168.1.107"));
// Create a buffer to read datagrams into. If a
// packet is larger than this buffer, the
// excess will simply be discarded!
byte[] buffer = new byte[2048];
// Create a packet to receive data into the buffer
DatagramPacket packet = new DatagramPacket(buffer, buffer.length);
// String[] s = new String[(int)total];
// Now loop forever, waiting to receive packets and printing them.
dsocket.setSoTimeout(1000);
// actually useless
dsocket.setReceiveBufferSize(3145728);
System.out.println("dsocket.getReceiveBufferSize():" + dsocket.getReceiveBufferSize());
while (used < 30000) {
// Wait to receive a datagram
try {
dsocket.receive(packet);
} catch (Exception e) {
// continue ;
used = System.currentTimeMillis() - start;
continue;
}
// Convert the contents to a string, and display them
String msg = new String(buffer, 0, packet.getLength());
// s[cnt] = msg;
// Reset the length of the packet before reusing it.
packet.setLength(buffer.length);
cnt++;
if (cnt % (step) == 0) {
used = System.currentTimeMillis() - start;
System.out.println(
"recive package:" + cnt + " through-put:" + ((double) cnt / (double) used) * 1000);
System.out.println(msg);
}
if (cnt == total) break;
}
used = System.currentTimeMillis() - start;
System.out.print(
"used time: "
+ used
+ "ms total: "
+ cnt
+ " pkgs through-put:"
+ ((double) cnt / (double) used) * 1000
+ " req/s lost-package:"
+ (total - cnt));
}