Java Code Examples for java.net.DatagramPacket#setSocketAddress()
The following examples show how to use
java.net.DatagramPacket#setSocketAddress() .
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Example 1
| Source File: DatagramSocketAdaptor.java From dragonwell8_jdk with GNU General Public License v2.0 | 6 votes |
|
public void receive(DatagramPacket p) throws IOException {
synchronized (dc.blockingLock()) {
if (!dc.isBlocking())
throw new IllegalBlockingModeException();
try {
synchronized (p) {
ByteBuffer bb = ByteBuffer.wrap(p.getData(),
p.getOffset(),
p.getLength());
SocketAddress sender = receive(bb);
p.setSocketAddress(sender);
p.setLength(bb.position() - p.getOffset());
}
} catch (IOException x) {
Net.translateException(x);
}
}
}
Example 2
| Source File: DatagramSocketAdaptor.java From jdk8u_jdk with GNU General Public License v2.0 | 6 votes |
|
public void receive(DatagramPacket p) throws IOException {
synchronized (dc.blockingLock()) {
if (!dc.isBlocking())
throw new IllegalBlockingModeException();
try {
synchronized (p) {
ByteBuffer bb = ByteBuffer.wrap(p.getData(),
p.getOffset(),
p.getLength());
SocketAddress sender = receive(bb);
p.setSocketAddress(sender);
p.setLength(bb.position() - p.getOffset());
}
} catch (IOException x) {
Net.translateException(x);
}
}
}
Example 3
| Source File: DatagramSocketAdaptor.java From Bytecoder with Apache License 2.0 | 6 votes |
|
@Override
public void receive(DatagramPacket p) throws IOException {
// get temporary direct buffer with a capacity of p.bufLength
int bufLength = DatagramPackets.getBufLength(p);
ByteBuffer bb = Util.getTemporaryDirectBuffer(bufLength);
try {
long nanos = MILLISECONDS.toNanos(timeout);
SocketAddress sender = dc.blockingReceive(bb, nanos);
bb.flip();
synchronized (p) {
// copy bytes to the DatagramPacket and set length
int len = Math.min(bb.limit(), DatagramPackets.getBufLength(p));
bb.get(p.getData(), p.getOffset(), len);
DatagramPackets.setLength(p, len);
// sender address
p.setSocketAddress(sender);
}
} catch (ClosedChannelException e) {
var exc = new SocketException("Socket closed");
exc.initCause(e);
throw exc;
} finally {
Util.offerFirstTemporaryDirectBuffer(bb);
}
}
Example 4
| Source File: DatagramSocketAdaptor.java From openjdk-jdk8u with GNU General Public License v2.0 | 6 votes |
|
public void receive(DatagramPacket p) throws IOException {
synchronized (dc.blockingLock()) {
if (!dc.isBlocking())
throw new IllegalBlockingModeException();
try {
synchronized (p) {
ByteBuffer bb = ByteBuffer.wrap(p.getData(),
p.getOffset(),
p.getLength());
SocketAddress sender = receive(bb);
p.setSocketAddress(sender);
p.setLength(bb.position() - p.getOffset());
}
} catch (IOException x) {
Net.translateException(x);
}
}
}
Example 5
| Source File: DNSResolver.java From personaldnsfilter with GNU General Public License v2.0 | 6 votes |
|
private void processDatagramPackageMode() throws Exception {
SocketAddress sourceAdr = dataGramRequest.getSocketAddress();
//we reuse the request data array
byte[] data = dataGramRequest.getData();
DatagramPacket response = new DatagramPacket(data, dataGramRequest.getOffset(), data.length - dataGramRequest.getOffset());
//forward request to DNS and receive response
DNSCommunicator.getInstance().requestDNS(dataGramRequest, response);
// patch the response by applying filter
DNSResponsePatcher.patchResponse(sourceAdr.toString(), response.getData(), response.getOffset());
//finally return the response to the request source
response.setSocketAddress(sourceAdr);
replySocket.send(response);
}
Example 6
| Source File: DNSServer.java From personaldnsfilter with GNU General Public License v2.0 | 6 votes |
|
@Override
public void resolve(DatagramPacket request, DatagramPacket response) throws IOException {
for (int i = 0; i<2; i++) { //retry once in case of EOFException (pooled connection was already closed)
Connection con = Connection.connect(address, timeout, ssl, null, Proxy.NO_PROXY);
con.setSoTimeout(timeout);
try {
DataInputStream in = new DataInputStream(con.getInputStream());
DataOutputStream out = new DataOutputStream(con.getOutputStream());
out.writeShort(request.getLength());
out.write(request.getData(), request.getOffset(), request.getLength());
out.flush();
int size = in.readShort();
readResponseFromStream(in, size, response);
response.setSocketAddress(address);
con.release(true);
return;
} catch (EOFException eof) {
con.release(false);
if (i == 1)
throw new IOException ("EOF when reading from "+this.toString(),eof); // retried already once, now throw exception
} catch (IOException eio) {
con.release(false);
throw eio;
}
}
}
Example 7
| Source File: DatagramSocketAdaptor.java From TencentKona-8 with GNU General Public License v2.0 | 6 votes |
|
public void receive(DatagramPacket p) throws IOException {
synchronized (dc.blockingLock()) {
if (!dc.isBlocking())
throw new IllegalBlockingModeException();
try {
synchronized (p) {
ByteBuffer bb = ByteBuffer.wrap(p.getData(),
p.getOffset(),
p.getLength());
SocketAddress sender = receive(bb);
p.setSocketAddress(sender);
p.setLength(bb.position() - p.getOffset());
}
} catch (IOException x) {
Net.translateException(x);
}
}
}
Example 8
| Source File: DNSServer.java From personaldnsfilter with GNU General Public License v2.0 | 5 votes |
|
@Override
public void resolve(DatagramPacket request, DatagramPacket response) throws IOException {
byte[] reqHeader = buildRequestHeader(request.getLength());
for (int i = 0; i<2; i++) { //retry once in case of EOFException (pooled connection was already closed)
Connection con = Connection.connect(urlHostAddress, timeout, true, null, Proxy.NO_PROXY);
try {
OutputStream out = con.getOutputStream();
DataInputStream in = new DataInputStream(con.getInputStream());
out.write(reqHeader);
out.write(request.getData(), request.getOffset(), request.getLength());
out.flush();
HttpHeader responseHeader = new HttpHeader(in, HttpHeader.RESPONSE_HEADER);
if (responseHeader.getResponseCode() != 200)
throw new IOException("DoH failed for " + url + "! " + responseHeader.getResponseCode() + " - " + responseHeader.getResponseMessage());
int size = (int) responseHeader.getContentLength();
readResponseFromStream(in, size, response);
response.setSocketAddress(address);
con.release(true);
return;
} catch (EOFException eof) {
con.release(false);
if (i == 1)
throw new IOException ("EOF when reading from "+this.toString(),eof); // retried already once, now throw exception
} catch (IOException eio) {
con.release(false);
throw eio;
}
}
}
Example 9
| Source File: Sender.java From ict with Apache License 2.0 | 5 votes |
|
private void sendTransactionToNeighbor(Neighbor nb, Transaction transaction) {
try {
DatagramPacket packet = transaction.toDatagramPacket(transactionsToRequest.isEmpty() ? Trytes.NULL_HASH : transactionsToRequest.poll());
packet.setSocketAddress(nb.getSocketAddress());
node.socket.send(packet);
} catch (Exception e) {
if (isRunning())
logger.error("Failed to send transaction to neighbor.", e);
}
}
Example 10
| Source File: TestOther.java From ProjectStudy with MIT License | 5 votes |
|
public static void main(String[] args) throws Exception {
/**
* 准备发送端
* DatagramSocket()
* 构造一个数据报套接字绑定到本地主机机器上的任何可用的端口。
*/
DatagramSocket ds = new DatagramSocket();
/**
* 准备数据包
*1、 DatagramPacket(byte[] buf, int length)
* 构造一个 DatagramPacket length接收数据包的长度
*2、 String的getBytes()
* 方法是得到一个操作系统默认的编码格式的字节数组
*3、 setSocketAddress()
* 设置SocketAddress(通常是IP地址+端口号)都的远程主机发送数据报。
* 4、InetSocketAddress(InetAddress addr, int port)
* 创建一个套接字地址的IP地址和端口号。
*/
String str = "3,19900000001,20171101155915,1,113.26171805987126,23.239234619127426,0.0,192,82|83,WS001,2020051100011002,13570577458";
byte[] ch = str.getBytes();
DatagramPacket dp = new DatagramPacket(ch, ch.length);
dp.setSocketAddress(new InetSocketAddress("127.0.0.1", 4567));
// 发送数据
ds.send(dp);
// 关闭套接字
ds.close();
}
Example 11
| Source File: DnsProxy.java From shadowsocks-android-java with Apache License 2.0 | 5 votes |
|
public void onDnsRequestReceived(IPHeader ipHeader, UDPHeader udpHeader, DnsPacket dnsPacket) {
if (!interceptDns(ipHeader, udpHeader, dnsPacket)) {
//转发DNS
QueryState state = new QueryState();
state.ClientQueryID = dnsPacket.Header.ID;
state.QueryNanoTime = System.nanoTime();
state.ClientIP = ipHeader.getSourceIP();
state.ClientPort = udpHeader.getSourcePort();
state.RemoteIP = ipHeader.getDestinationIP();
state.RemotePort = udpHeader.getDestinationPort();
// 转换QueryID
m_QueryID++;// 增加ID
dnsPacket.Header.setID(m_QueryID);
synchronized (m_QueryArray) {
clearExpiredQueries();//清空过期的查询，减少内存开销。
m_QueryArray.put(m_QueryID, state);// 关联数据
}
InetSocketAddress remoteAddress = new InetSocketAddress(CommonMethods.ipIntToInet4Address(state.RemoteIP), state.RemotePort);
DatagramPacket packet = new DatagramPacket(udpHeader.m_Data, udpHeader.m_Offset + 8, dnsPacket.Size);
packet.setSocketAddress(remoteAddress);
try {
if (LocalVpnService.Instance.protect(m_Client)) {
m_Client.send(packet);
} else {
System.err.println("VPN protect udp socket failed.");
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
Example 12
| Source File: SyslogSourceTests.java From spring-cloud-stream-app-starters with Apache License 2.0 | 5 votes |
|
protected void sendUdp(String syslog) throws Exception {
waitUdp();
DatagramSocket socket = new DatagramSocket();
DatagramPacket packet = new DatagramPacket(syslog.getBytes(), syslog.length());
packet.setSocketAddress(new InetSocketAddress("localhost", this.port));
socket.send(packet);
socket.close();
}
Example 13
| Source File: DnsProxy.java From SmartZPN with GNU Lesser General Public License v3.0 | 5 votes |
|
public void onDnsRequestReceived(IPHeader ipHeader, UDPHeader udpHeader, DnsPacket dnsPacket) {
if (!interceptDns(ipHeader, udpHeader, dnsPacket)) {
//转发DNS
QueryState state = new QueryState();
state.ClientQueryID = dnsPacket.Header.ID;
state.QueryNanoTime = System.nanoTime();
state.ClientIP = ipHeader.getSourceIP();
state.ClientPort = udpHeader.getSourcePort();
state.RemoteIP = ipHeader.getDestinationIP();
state.RemotePort = udpHeader.getDestinationPort();
// 转换QueryID
mQueryID++;// 增加ID
dnsPacket.Header.setID(mQueryID);
synchronized (mQueryArray) {
clearExpiredQueries();//清空过期的查询，减少内存开销。
mQueryArray.put(mQueryID, state);// 关联数据
}
InetSocketAddress remoteAddress = new InetSocketAddress(ProxyUtils.ipIntToInet4Address(state.RemoteIP), state.RemotePort);
DatagramPacket packet = new DatagramPacket(udpHeader.m_Data, udpHeader.m_Offset + 8, dnsPacket.Size);
packet.setSocketAddress(remoteAddress);
try {
if (LocalVpnService.Instance.protect(mClient)) {
mClient.send(packet);
} else {
System.err.println("VPN protect udp socket failed.");
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
Example 14
| Source File: DnsProxy.java From SmartProxy with GNU General Public License v3.0 | 5 votes |
|
public void onDnsRequestReceived(IPHeader ipHeader,UDPHeader udpHeader,DnsPacket dnsPacket){
if(!interceptDns(ipHeader,udpHeader,dnsPacket)){
//ת��DNS
QueryState state = new QueryState();
state.ClientQueryID =dnsPacket.Header.ID;
state.QueryNanoTime = System.nanoTime();
state.ClientIP = ipHeader.getSourceIP();
state.ClientPort = udpHeader.getSourcePort();
state.RemoteIP = ipHeader.getDestinationIP();
state.RemotePort = udpHeader.getDestinationPort();
// ת��QueryID
m_QueryID++;// ����ID
dnsPacket.Header.setID(m_QueryID);
synchronized (m_QueryArray) {
clearExpiredQueries();//��չ��ڵIJ�ѯ�������ڴ濪����
m_QueryArray.put(m_QueryID, state);// ��������
}
InetSocketAddress remoteAddress = new InetSocketAddress(CommonMethods.ipIntToInet4Address(state.RemoteIP ), state.RemotePort);
DatagramPacket packet = new DatagramPacket(udpHeader.m_Data, udpHeader.m_Offset+8, dnsPacket.Size);
packet.setSocketAddress(remoteAddress);
try {
if(LocalVpnService.Instance.protect(m_Client)){
m_Client.send(packet);
}else {
System.err.println("VPN protect udp socket failed.");
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
Example 15
| Source File: KadServer.java From Kademlia with MIT License | 5 votes |
|
/**
* Internal sendMessage method called by the public sendMessage method after a communicationId is generated
*/
private void sendMessage(Node to, Message msg, int comm) throws IOException
{
/* Use a try-with resource to auto-close streams after usage */
try (ByteArrayOutputStream bout = new ByteArrayOutputStream(); DataOutputStream dout = new DataOutputStream(bout);)
{
/* Setup the message for transmission */
dout.writeInt(comm);
dout.writeByte(msg.code());
msg.toStream(dout);
dout.close();
byte[] data = bout.toByteArray();
if (data.length > DATAGRAM_BUFFER_SIZE)
{
throw new IOException("Message is too big");
}
/* Everything is good, now create the packet and send it */
DatagramPacket pkt = new DatagramPacket(data, 0, data.length);
pkt.setSocketAddress(to.getSocketAddress());
socket.send(pkt);
/* Lets inform the statistician that we've sent some data */
this.statistician.sentData(data.length);
}
}
Example 16
| Source File: SocketManagerTest.java From mts with GNU General Public License v3.0 | 4 votes |
|
/**
* @param args
*/
public static void main(String[] args) throws Exception {
host = Utils.getLocalAddress().getHostAddress();
port = 10000;
transport = "udp";
InetSocketAddress localDatagramSocketAddress = new InetSocketAddress(host, port);
DatagramSocket datagramSocket = new DatagramSocket(localDatagramSocketAddress);
String packet = createRequest(0);
byte[] data = Utils.parseBinaryString(packet);
System.out.println("length = " + data.length);
DatagramPacket dp = new DatagramPacket(data, data.length);
InetSocketAddress remoteDatagramSocketAddress = new InetSocketAddress(host, port);
dp.setSocketAddress(remoteDatagramSocketAddress);
int maxIter = 100000;
System.out.println("maxIter : " + maxIter);
long beginTT = new GregorianCalendar().getTimeInMillis();
for (int i = 1; i <= maxIter; i++) {
// Create a message object corresponding to the string message
if (i % 1000 == 0) {
// System.out.println("i=" + i);
}
// MsgUdp msg = new MsgUdp(data, data.length);
// msg.setListenpoint(listenpoint);
dp.setData(data);
// remoteDatagramSocketAddress = new InetSocketAddress(host, port);
dp.setSocketAddress(remoteDatagramSocketAddress);
datagramSocket.send(dp);
}
long endTT = new GregorianCalendar().getTimeInMillis();
float duration = ((float)(endTT - beginTT)) / 1000;
float flow = maxIter / duration;
System.out.println("nombre trans = " + maxIter + " msg.");
System.out.println("duration = " + duration + " s.");
System.out.println("msg flow = " + flow + " msg/s.");
System.out.println("Hit enter to terminate server");
System.in.read();
}
Example 17
| Source File: DHTTrackerPluginAlt.java From BiglyBT with GNU General Public License v2.0 | 4 votes |
|
private byte[]
send(
GetPeersTask task,
DatagramSocket server,
InetSocketAddress address,
Map<String,Object> map )
throws IOException
{
byte[] tid;
while( true ){
tid = new byte[4];
RandomUtils.nextBytes( tid );
synchronized( tid_map ){
if ( tid_map.containsKey( tid )){
continue;
}
tid_map.put( tid, new Object[]{ task, SystemTime.getMonotonousTime() });
if ( timer_event == null ){
timer_event =
SimpleTimer.addPeriodicEvent(
"dhtalttimer",
2500,
new TimerEventPerformer()
{
@Override
public void
perform(
TimerEvent event)
{
checkTimeouts();
synchronized( tid_map ){
if ( tid_map.size() == 0 ){
timer_event.cancel();
timer_event = null;
}
}
}
});
}
}
try{
map.put( "t", tid );
// System.out.println( "Sending: " + map );
byte[] data_out = BEncoder.encode( map );
DatagramPacket packet = new DatagramPacket( data_out, data_out.length);
packet.setSocketAddress( address );
packets_out++;
bytes_out += data_out.length;
server.send( packet );
return( tid );
}catch( Throwable e ){
try{
server.close();
}catch( Throwable f ){
}
synchronized( tid_map ){
tid_map.remove( tid );
}
if ( e instanceof IOException ){
throw((IOException)e);
}else{
throw(new IOException(Debug.getNestedExceptionMessage(e)));
}
}
}
}
Example 18
| Source File: DHTTrackerPluginAlt.java From TorrentEngine with GNU General Public License v3.0 | 2 votes |
|
private byte[]
send(
GetPeersTask task,
DatagramSocket server,
InetSocketAddress address,
Map<String,Object> map )
throws IOException
{
byte[] tid;
while( true ){
tid = new byte[4];
RandomUtils.nextBytes( tid );
synchronized( tid_map ){
if ( tid_map.containsKey( tid )){
continue;
}
tid_map.put( tid, new Object[]{ task, SystemTime.getMonotonousTime() });
if ( timer_event == null ){
timer_event =
SimpleTimer.addPeriodicEvent(
"dhtalttimer",
2500,
new TimerEventPerformer()
{
public void
perform(
TimerEvent event)
{
checkTimeouts();
synchronized( tid_map ){
if ( tid_map.size() == 0 ){
timer_event.cancel();
timer_event = null;
}
}
}
});
}
}
try{
map.put( "t", tid );
// System.out.println( "Sending: " + map );
byte[] data_out = BEncoder.encode( map );
DatagramPacket packet = new DatagramPacket( data_out, data_out.length);
packet.setSocketAddress( address );
packets_out++;
bytes_out += data_out.length;
server.send( packet );
return( tid );
}catch( Throwable e ){
try{
server.close();
}catch( Throwable f ){
}
synchronized( tid_map ){
tid_map.remove( tid );
}
if ( e instanceof IOException ){
throw((IOException)e);
}else{
throw(new IOException(Debug.getNestedExceptionMessage(e)));
}
}
}
}
