@Override
public int getReceiveBufferSize() {
try {
return socket.getReceiveBufferSize();
} catch (SocketException e) {
throw new ChannelException(e);
}
}
/**
* Konstruktor
*
* @param port UDP-Port, der lokal fuer das Datagramm-Socket verwendet werden soll
*/
public UdpSocket(int port) throws SocketException {
socket = new DatagramSocket(port);
try {
log.debug(
"Groesse des Empfangspuffers des Datagram-Sockets: "
+ socket.getReceiveBufferSize()
+ " Byte");
log.debug(
"Groesse des Sendepuffers des Datagram-Sockets: " + socket.getSendBufferSize() + " Byte");
} catch (SocketException e) {
log.debug("Socketfehler: " + e);
}
}
/**
* Konstruktor
*
* @param port UDP-Port, der lokal fuer das Datagramm-Socket verwendet werden soll
* @param sendBufferSize Groesse des Sendepuffers in Byte
* @param receiveBufferSize Groesse des Empfangspuffers in Byte
*/
public UdpSocket(int port, int sendBufferSize, int receiveBufferSize) throws SocketException {
socket = new DatagramSocket(port);
try {
socket.setReceiveBufferSize(receiveBufferSize);
socket.setSendBufferSize(sendBufferSize);
System.out.println(
"Groesse des Empfangspuffers des Datagram-Sockets: "
+ socket.getReceiveBufferSize()
+ " Byte");
System.out.println(
"Groesse des Sendepuffers des Datagram-Sockets: " + socket.getSendBufferSize() + " Byte");
} catch (SocketException e) {
log.debug("Socketfehler: " + e);
}
}
public UdpSocketHandler(
int listenPort,
InetAddress bindto,
Node node,
long startupTime,
String title,
IOStatisticCollector collector)
throws SocketException {
this.node = node;
this.collector = collector;
this.title = title;
_bindTo = bindto;
// Keep the Updater code in, just commented out, for now
// We may want to be able to do on-line updates.
// if (Updater.hasResource()) {
// _sock = (DatagramSocket) Updater.getResource();
// } else {
this.listenPort = listenPort;
_sock = new DatagramSocket(listenPort, bindto);
int sz = _sock.getReceiveBufferSize();
if (sz < 65536) {
_sock.setReceiveBufferSize(65536);
}
try {
// Exit reasonably quickly
_sock.setReuseAddress(true);
} catch (SocketException e) {
throw new RuntimeException(e);
}
// }
// Only used for debugging, no need to seed from Yarrow
dropRandom = node.fastWeakRandom;
logMINOR = Logger.shouldLog(LogLevel.MINOR, this);
logDEBUG = Logger.shouldLog(LogLevel.DEBUG, this);
tracker = AddressTracker.create(node.lastBootID, node.runDir(), listenPort);
tracker.startSend(startupTime);
}
String dumpSocketInfo() throws Exception {
StringBuffer sb = new StringBuffer();
sb.append("local_addr=").append(local_addr);
sb.append(", mcast_addr=").append(mcast_addr);
sb.append(", bind_addr=").append(bind_addr);
sb.append(", ttl=").append(ip_ttl);
if (sock != null) {
sb.append("\nsocket: bound to ");
sb.append(sock.getLocalAddress().getHostAddress()).append(":").append(sock.getLocalPort());
sb.append(", receive buffer size=").append(sock.getReceiveBufferSize());
sb.append(", send buffer size=").append(sock.getSendBufferSize());
}
if (mcast_sock != null) {
sb.append("\nmulticast socket: bound to ");
sb.append(mcast_sock.getInterface().getHostAddress())
.append(":")
.append(mcast_sock.getLocalPort());
sb.append(", send buffer size=").append(mcast_sock.getSendBufferSize());
sb.append(", receive buffer size=").append(mcast_sock.getReceiveBufferSize());
}
return sb.toString();
}
public void run() {
DatagramSocket socketCopy = socket;
if (socketCopy != null) {
try {
socketCopy.setSoTimeout(getSocketTimeout());
if (receiveBufferSize > 0) {
socketCopy.setReceiveBufferSize(Math.max(receiveBufferSize, maxInboundMessageSize));
}
if (logger.isDebugEnabled()) {
logger.debug(
"UDP receive buffer size for socket "
+ getAddress()
+ " is set to: "
+ socketCopy.getReceiveBufferSize());
}
} catch (SocketException ex) {
logger.error(ex);
setSocketTimeout(0);
}
}
while (!stop) {
DatagramPacket packet =
new DatagramPacket(buf, buf.length, udpAddress.getInetAddress(), udpAddress.getPort());
try {
socketCopy = socket;
try {
if (socketCopy == null) {
stop = true;
continue;
}
socketCopy.receive(packet);
} catch (InterruptedIOException iiox) {
if (iiox.bytesTransferred <= 0) {
continue;
}
}
if (logger.isDebugEnabled()) {
logger.debug(
"Received message from "
+ packet.getAddress()
+ "/"
+ packet.getPort()
+ " with length "
+ packet.getLength()
+ ": "
+ new OctetString(packet.getData(), 0, packet.getLength()).toHexString());
}
ByteBuffer bis;
// If messages are processed asynchronously (i.e. multi-threaded)
// then we have to copy the buffer's content here!
if (isAsyncMsgProcessingSupported()) {
byte[] bytes = new byte[packet.getLength()];
System.arraycopy(packet.getData(), 0, bytes, 0, bytes.length);
bis = ByteBuffer.wrap(bytes);
} else {
bis = ByteBuffer.wrap(packet.getData());
}
TransportStateReference stateReference =
new TransportStateReference(
DefaultUdpTransportMapping.this,
udpAddress,
null,
SecurityLevel.undefined,
SecurityLevel.undefined,
false,
socketCopy);
fireProcessMessage(
new UdpAddress(packet.getAddress(), packet.getPort()), bis, stateReference);
} catch (SocketTimeoutException stex) {
// ignore
} catch (PortUnreachableException purex) {
synchronized (DefaultUdpTransportMapping.this) {
listener = null;
}
logger.error(purex);
if (logger.isDebugEnabled()) {
purex.printStackTrace();
}
if (SNMP4JSettings.isFowardRuntimeExceptions()) {
throw new RuntimeException(purex);
}
break;
} catch (SocketException soex) {
if (!stop) {
logger.error(
"Socket for transport mapping " + toString() + " error: " + soex.getMessage(),
soex);
}
if (SNMP4JSettings.isFowardRuntimeExceptions()) {
stop = true;
throw new RuntimeException(soex);
}
} catch (IOException iox) {
logger.warn(iox);
if (logger.isDebugEnabled()) {
iox.printStackTrace();
}
if (SNMP4JSettings.isFowardRuntimeExceptions()) {
throw new RuntimeException(iox);
}
}
}
synchronized (DefaultUdpTransportMapping.this) {
listener = null;
stop = true;
DatagramSocket closingSocket = socket;
if ((closingSocket != null) && (!closingSocket.isClosed())) {
closingSocket.close();
}
}
if (logger.isDebugEnabled()) {
logger.debug("Worker task stopped:" + getClass().getName());
}
}
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));
}