Package java.net

Examples of java.net.MulticastSocket.receive()

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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");
                    idx = incoming.indexOf('>', idx);
                    incoming = incoming.substring(idx + 1);
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        // send & recieve packet
        byte[] sendData = message.getBytes();
        DatagramPacket sendDatagram = new DatagramPacket(sendData, 0,
                sendData.length, group, PORT);
        socket.send(sendDatagram);
        socket.receive(recvDatagram);
        String recvMessage = new String(recvData, 0, recvDatagram.getLength());
        assertEquals(message, recvMessage);
       
        // send & receive longer packet
        sendData = longerMessage.getBytes();
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        // send & receive longer packet
        sendData = longerMessage.getBytes();
        sendDatagram = new DatagramPacket(sendData, 0, sendData.length,
                group, PORT);
        socket.send(sendDatagram);
        socket.receive(recvDatagram);
        recvMessage = new String(recvData, 0, recvDatagram.getLength());
        assertEquals(longerMessage, recvMessage);

        // tricky case, added to test compatibility with RI;
        // depends on the previous test case
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        sendData = veryLongMessage.getBytes();
        sendDatagram = new DatagramPacket(sendData, 0, sendData.length, group,
                PORT);
        socket.send(sendDatagram);
        recvDatagram.setLength(recvDatagram.getLength()); // !!!
        socket.receive(recvDatagram);
        recvMessage = new String(recvData, 0, recvDatagram.getLength());
        assertEquals(longerMessage, recvMessage);

        // tests if received packet is truncated after length was set to 1
        sendData = message.getBytes();
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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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                channel.getConfig().getReceiveBufferSizePredictor();

            byte[] buf = new byte[predictor.nextReceiveBufferSize()];
            DatagramPacket packet = new DatagramPacket(buf, buf.length);
            try {
                socket.receive(packet);
            } catch (Throwable t) {
                if (!channel.socket.isClosed()) {
                    fireExceptionCaught(channel, t);
                }
                break;
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            for(int i=0; i < 10; i++) {
                start=System.currentTimeMillis();
                send_buf=Util.objectToByteBuffer(start);
                send_packet=new DatagramPacket(send_buf, 0, send_buf.length, GROUP, PORT);
                send_sock.send(send_packet);
                recv_sock.receive(recv_packet);
                start=((Long)Util.objectFromByteBuffer(recv_buf, recv_packet.getOffset(), recv_packet.getLength())).longValue();
                System.out.println("took " + (System.currentTimeMillis() - start) + " ms");
                Util.sleep(1000);
            }
            return;
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            MulticastSocket recv_sock=new MulticastSocket(PORT);
            recv_sock.joinGroup(GROUP);
            recv_packet=new DatagramPacket(recv_buf, 0, recv_buf.length);
            System.out.println("receiver started");
            for(;;) {
                recv_sock.receive(recv_packet);
                start=((Long)Util.objectFromByteBuffer(recv_buf, recv_packet.getOffset(), recv_packet.getLength())).longValue();
                System.out.println("took " + (System.currentTimeMillis() - start) + " ms");
            }
        }
    }
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                channel.getConfig().getReceiveBufferSizePredictor();

            byte[] buf = new byte[predictor.nextReceiveBufferSize()];
            DatagramPacket packet = new DatagramPacket(buf, buf.length);
            try {
                socket.receive(packet);
            } catch (InterruptedIOException e) {
                // Can happen on interruption.
                // Keep receiving unless the channel is closed.
                continue;
            } catch (Throwable t) {
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