Package java.net

Examples of java.net.MulticastSocket.receive()

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        sendData = message.getBytes();
        sendDatagram = new DatagramPacket(sendData, 0, sendData.length,
                group, PORT);
        socket.send(sendDatagram);
        recvDatagram.setLength(1);
        socket.receive(recvDatagram);
        assertEquals("Received message was not truncated", 1,
                recvDatagram.getLength());
        assertSame("Received message is invalid", sendData[0], recvData[0]);

        socket.leaveGroup(group);
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            byte[] recvData = new byte[100];
            DatagramPacket recvDatagram = new DatagramPacket(recvData,
                    recvData.length);
            socket.setSoTimeout(5000); // prevent eternal block in
            // socket.receive()
            socket.receive(recvDatagram);
            String recvMessage = new String(recvData, 0, recvDatagram
                    .getLength());
            assertEquals(message, recvMessage);
        }finally {
            if (socket != null)
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            byte[] recvData = new byte[100];
            DatagramPacket recvDatagram = new DatagramPacket(recvData,
                    recvData.length);
            socket.setSoTimeout(5000); // prevent eternal block in
            // socket.receive()
            socket.receive(recvDatagram);
            String recvMessage = new String(recvData, 0, recvDatagram
                    .getLength());
            assertEquals(message, recvMessage);
        }finally {
            if (socket != null)
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                    s.joinGroup(InetAddress.getByName(group));

                    // Create a DatagramPacket and do a receive
                    byte buf[] = new byte[1024];
                    DatagramPacket pack = new DatagramPacket(buf, buf.length);
                    s.receive(pack);
                    System.out.println("Received data from: " + pack.getAddress().toString() +
                                       ":" + pack.getPort() + " with length: " +
                                       pack.getLength());
                    s.leaveGroup(InetAddress.getByName(group));
                    s.close();
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                    s.joinGroup(address);
                    s.setReceiveBufferSize(64 * 1024);
                    s.setSoTimeout(5000);
                    byte[] bytes = new byte[64 * 1024];
                    DatagramPacket p = new DatagramPacket(bytes, bytes.length, address, Integer.parseInt(PORT));
                    s.receive(p);
                    SocketAddress sa = p.getSocketAddress();
                    String incoming = new String(p.getData(), 0, p.getLength(), "UTF-8");
                    int idx = incoming.indexOf("MessageID>");
                    incoming = incoming.substring(idx + 10);
                    idx = incoming.indexOf("</");
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         // Look for a reply
         // IP address + port number = 128.128.128.128:65535 => (12+3) + 1 + (5) = 21

         buf = new byte[50];
         packet = new DatagramPacket(buf, buf.length);
         s.receive(packet);
         String myServer = new String(packet.getData()).trim();
         if (trace)
            log.trace("Received answer packet: " + myServer);
         while (myServer != null && myServer.startsWith("GET_ADDRESS"))
         {
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            log.trace("Received answer packet: " + myServer);
         while (myServer != null && myServer.startsWith("GET_ADDRESS"))
         {
            Arrays.fill(buf, (byte) 0);
            packet.setLength(buf.length);
            s.receive(packet);
            byte[] reply = packet.getData();
            myServer = new String(reply).trim();
            if (trace)
               log.trace("Received answer packet: " + myServer);
         }
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        DatagramPacket recv = new DatagramPacket(buf2, buf2.length);

        MulticastSocket ms = this.multicastStateManager.getMulticastSocket();

        try {
            ms.receive(recv);
        } catch (IllegalBlockingModeException ibme) {
            // MulticastSocket does not support nonblocking
            // TODO: Use Java 7 NIO.2 DatagramChannel to do multicast
            if (runtime.is1_9()) {
                throw runtime.newErrnoEAGAINReadableError("multicast UDP does not support nonblocking");
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                    s.joinGroup(InetAddress.getByName(group));

                    // Create a DatagramPacket and do a receive
                    byte buf[] = new byte[1024];
                    DatagramPacket pack = new DatagramPacket(buf, buf.length);
                    s.receive(pack);
                    System.out.println("Received data from: " + pack.getAddress().toString() +
                                       ":" + pack.getPort() + " with length: " +
                                       pack.getLength());
                    s.leaveGroup(InetAddress.getByName(group));
                    s.close();
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        byte[] inbuf = new byte[1024];
        DatagramPacket packet = new DatagramPacket(inbuf, inbuf.length);

        // Wait for packet
        msocket.receive(packet);

        // Data is now in inbuf
        int numBytesReceived = packet.getLength();
        System.out.println("Recd: " + new String(inbuf, 0, numBytesReceived));
    }
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