Examples of java.net.DatagramSocket.send()

java.net.DatagramSocket.send()
Sends a datagram packet from this socket. The DatagramPacket includes information indicating the data to be sent, its length, the IP address of the remote host, and the port number on the remote host.
If there is a security manager, and the socket is not currently connected to a remote address, this method first performs some security checks. First, if p.getAddress().isMulticastAddress() is true, this method calls the security manager's checkMulticast method with p.getAddress() as its argument. If the evaluation of that expression is false, this method instead calls the security manager's checkConnect method with arguments p.getAddress().getHostAddress() and p.getPort(). Each call to a security manager method could result in a SecurityException if the operation is not allowed. @param p the DatagramPacket to be sent. @exception IOException if an I/O error occurs. @exception SecurityException if a security manager exists and its checkMulticast or checkConnect method doesn't allow the send. @exception PortUnreachableException may be thrown if the socket is connectedto a currently unreachable destination. Note, there is no guarantee that the exception will be thrown. @exception java.nio.channels.IllegalBlockingModeException if this socket has an associated channel, and the channel is in non-blocking mode. @see java.net.DatagramPacket @see SecurityManager#checkMulticast(InetAddress) @see SecurityManager#checkConnect @revised 1.4 @spec JSR-51

            for (int i = 0; i < messageCount; i++) {


                byte[] data = message.getBytes();


                DatagramPacket packet = new DatagramPacket(data, data.length, address, serverPort);
                socket.send(packet);
                Thread.sleep(100);
            }
        } finally {
            socket.close();
        }

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    line = null;
    String test = "This is a test";
    byte[] testBytes = test.getBytes("UTF-8");
    DatagramPacket request = new DatagramPacket(testBytes, testBytes.length, InetAddress.getLocalHost(), 10000);
        DatagramSocket socket = new DatagramSocket();
        socket.send(request);
        try {
      Thread.sleep(500);
    } catch (InterruptedException e) {}
        
        assertEquals(line, test);

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      socket = new DatagramSocket();


      final DatagramPacket dgmPacket = new DatagramPacket(msg.getBytes(),
          msg.length(), remoteAddress, port);


      socket.send(dgmPacket);
      
      logger.debug("replied ["+remoteAddress + ":" + port +"] ->\n" + msg);
    } finally {
      if (socket != null) {
        logger.trace("close reply-socket");

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        for (int i = 0; i < messageCount; i++) {
            String text = "Hello Message: " + i;
            byte[] data = text.getBytes();


            DatagramPacket packet = new DatagramPacket(data, data.length, address, port);
            socket.send(packet);
            Thread.sleep(1000);
        }
    }


    protected RouteBuilder createRouteBuilder() {

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            DatagramSocket socket = new DatagramSocket();
            if (log.isDebugEnabled()) {
                log.debug("Sending " + payload.length + " bytes to " + udpOutInfo.getAddress());
            }
            try {
                socket.send(new DatagramPacket(payload, payload.length, udpOutInfo.getAddress()));
                if (!msgContext.getOptions().isUseSeparateListener() &&
                        !msgContext.isServerSide()){
                    waitForReply(msgContext, socket, udpOutInfo.getContentType());
                }
            }

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                    if (SNMP_ADAPTOR_LOGGER.isLoggable(Level.FINER)) {
                        SNMP_ADAPTOR_LOGGER.logp(Level.FINER, dbgTag,
                            "stop", "Sending: using port " + port);
                    }
                    sn.send(pk);
                } finally {
                    sn.close();
                }
            } catch (Throwable e){
                if (SNMP_ADAPTOR_LOGGER.isLoggable(Level.FINEST)) {

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         java.net.InetAddress.getLocalHost(), port);
                                
        if (isTraceOn()) {
      trace("stop", "Sending: using port " + port);
        }
        sn.send(pk);
    } finally {
        sn.close();
    }
            } catch (Throwable e){
                if (isDebugOn()) {

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            // We send an empty datagram packet to fix bug 4293791 (it's a jdk 1.1 bug)
            //
            DatagramSocket sn = new java.net.DatagramSocket(0);
            byte[] ob = new byte[1];
            DatagramPacket pk = new DatagramPacket(ob , 1, java.net.InetAddress.getLocalHost(), _socketPort);
            sn.send(pk);
            sn.close();
        } catch (Exception e) {}
                
        // First close the datagram socket.
        // This may generates an IO exception at the run method (_socket.receive).

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        try
        {
            logger.debug("Testing UDP on " + addressToString(address, port));
            DatagramSocket server = openUdpServer(address, port);
            DatagramSocket client = openUdpClient();
            client.send(new DatagramPacket(new byte[]{1}, 1, address, port));
            DatagramPacket packet = new DatagramPacket(new byte[1], 1);
            server.receive(packet);
            assertEquals("Failed to send packet via " + addressToString(address, port),
                    1, packet.getData()[0]);
            client.close();

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                dataOut.writeFloat(2.0f);
                byte[] bytesToSend = bytesOut.toByteArray();


                DatagramPacket outboundPacket = new DatagramPacket(bytesToSend, bytesToSend.length,
                    InetAddress.getLocalHost(), outPort);
                socket.send(outboundPacket);


            // receive whatever came back
            byte[] receiveBuffer = new byte[bytesToSend.length];
            DatagramPacket inboundPacket = new DatagramPacket(receiveBuffer, receiveBuffer.length);
            socket.receive(inboundPacket);

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