Examples with DatagramPacket java.net.DatagramPacket used on opensource projects

Example 81 with DatagramPacket

use of java.net.DatagramPacket in project physical-web by google.

the class Ssdp method run.

@Override
public void run() {
    Thread currentThread = Thread.currentThread();
    byte[] buf = new byte[1024];
    Log.d(TAG, "SSDP scan started");
    while (!currentThread.isInterrupted() && mDatagramSocket != null) {
        try {
            DatagramPacket dp = new DatagramPacket(buf, buf.length);
            mDatagramSocket.receive(dp);
            String txt = new String(dp.getData(), StandardCharsets.UTF_8);
            SsdpMessage msg = new SsdpMessage(txt);
            mSsdpCallback.onSsdpMessageReceived(msg);
        } catch (SocketTimeoutException e) {
            Log.d(TAG, e.getMessage());
            break;
        } catch (IOException e) {
            Log.e(TAG, e.getMessage());
        }
    }
    // cleanup if needed
    synchronized (this) {
        if (mThread == currentThread) {
            mThread = null;
            if (mDatagramSocket != null) {
                mDatagramSocket.close();
                mDatagramSocket = null;
            }
        }
    }
    Log.d(TAG, "SSDP scan terminated");
}

Example 82 with DatagramPacket

use of java.net.DatagramPacket in project j2objc by google.

the class DatagramChannelImpl method receiveImpl.

private SocketAddress receiveImpl(ByteBuffer target, boolean loop) throws IOException {
    SocketAddress retAddr = null;
    DatagramPacket receivePacket;
    int oldposition = target.position();
    int received;
    // TODO: disallow mapped buffers and lose this conditional?
    if (target.hasArray()) {
        receivePacket = new DatagramPacket(target.array(), target.position() + target.arrayOffset(), target.remaining());
    } else {
        receivePacket = new DatagramPacket(new byte[target.remaining()], target.remaining());
    }
    do {
        received = NetworkBridge.recvfrom(false, fd, receivePacket.getData(), receivePacket.getOffset(), receivePacket.getLength(), 0, receivePacket, isConnected());
        if (receivePacket.getAddress() != null) {
            if (received > 0) {
                if (target.hasArray()) {
                    target.position(oldposition + received);
                } else {
                    // copy the data of received packet
                    target.put(receivePacket.getData(), 0, received);
                }
            }
            retAddr = receivePacket.getSocketAddress();
            break;
        }
    } while (loop);
    return retAddr;
}

Example 83 with DatagramPacket

use of java.net.DatagramPacket in project gradle by gradle.

the class FileLockCommunicator method receive.

public long receive() throws GracefullyStoppedException {
    try {
        byte[] bytes = new byte[9];
        DatagramPacket packet = new DatagramPacket(bytes, bytes.length);
        socket.receive(packet);
        return decode(bytes);
    } catch (IOException e) {
        if (!stopped) {
            throw new RuntimeException(e);
        }
        throw new GracefullyStoppedException();
    }
}

Example 84 with DatagramPacket

use of java.net.DatagramPacket in project XobotOS by xamarin.

the class UDPMessageChannel method processIncomingDataPacket.

/**
     * Process an incoming datagram
     *
     * @param packet
     *            is the incoming datagram packet.
     */
private void processIncomingDataPacket(DatagramPacket packet) throws Exception {
    this.peerAddress = packet.getAddress();
    int packetLength = packet.getLength();
    // Read bytes and put it in a eueue.
    byte[] bytes = packet.getData();
    byte[] msgBytes = new byte[packetLength];
    System.arraycopy(bytes, 0, msgBytes, 0, packetLength);
    // Do debug logging.
    if (sipStack.isLoggingEnabled()) {
        this.sipStack.getStackLogger().logDebug("UDPMessageChannel: processIncomingDataPacket : peerAddress = " + peerAddress.getHostAddress() + "/" + packet.getPort() + " Length = " + packetLength);
    }
    SIPMessage sipMessage = null;
    try {
        this.receptionTime = System.currentTimeMillis();
        sipMessage = myParser.parseSIPMessage(msgBytes);
        myParser = null;
    } catch (ParseException ex) {
        // let go of the parser reference.
        myParser = null;
        if (sipStack.isLoggingEnabled()) {
            this.sipStack.getStackLogger().logDebug("Rejecting message !  " + new String(msgBytes));
            this.sipStack.getStackLogger().logDebug("error message " + ex.getMessage());
            this.sipStack.getStackLogger().logException(ex);
        }
        // JvB: send a 400 response for requests (except ACK)
        // Currently only UDP, @todo also other transports
        String msgString = new String(msgBytes, 0, packetLength);
        if (!msgString.startsWith("SIP/") && !msgString.startsWith("ACK ")) {
            String badReqRes = createBadReqRes(msgString, ex);
            if (badReqRes != null) {
                if (sipStack.isLoggingEnabled()) {
                    sipStack.getStackLogger().logDebug("Sending automatic 400 Bad Request:");
                    sipStack.getStackLogger().logDebug(badReqRes);
                }
                try {
                    this.sendMessage(badReqRes.getBytes(), peerAddress, packet.getPort(), "UDP", false);
                } catch (IOException e) {
                    this.sipStack.getStackLogger().logException(e);
                }
            } else {
                if (sipStack.isLoggingEnabled()) {
                    sipStack.getStackLogger().logDebug("Could not formulate automatic 400 Bad Request");
                }
            }
        }
        return;
    }
    if (sipMessage == null) {
        if (sipStack.isLoggingEnabled()) {
            this.sipStack.getStackLogger().logDebug("Rejecting message !  + Null message parsed.");
        }
        if (pingBackRecord.get(packet.getAddress().getHostAddress() + ":" + packet.getPort()) == null) {
            byte[] retval = "\r\n\r\n".getBytes();
            DatagramPacket keepalive = new DatagramPacket(retval, 0, retval.length, packet.getAddress(), packet.getPort());
            ((UDPMessageProcessor) this.messageProcessor).sock.send(keepalive);
            this.sipStack.getTimer().schedule(new PingBackTimerTask(packet.getAddress().getHostAddress(), packet.getPort()), 1000);
        }
        return;
    }
    ViaList viaList = sipMessage.getViaHeaders();
    // Check for the required headers.
    if (sipMessage.getFrom() == null || sipMessage.getTo() == null || sipMessage.getCallId() == null || sipMessage.getCSeq() == null || sipMessage.getViaHeaders() == null) {
        String badmsg = new String(msgBytes);
        if (sipStack.isLoggingEnabled()) {
            this.sipStack.getStackLogger().logError("bad message " + badmsg);
            this.sipStack.getStackLogger().logError(">>> Dropped Bad Msg " + "From = " + sipMessage.getFrom() + "To = " + sipMessage.getTo() + "CallId = " + sipMessage.getCallId() + "CSeq = " + sipMessage.getCSeq() + "Via = " + sipMessage.getViaHeaders());
        }
        return;
    }
    // For response, just get the port from the packet.
    if (sipMessage instanceof SIPRequest) {
        Via v = (Via) viaList.getFirst();
        Hop hop = sipStack.addressResolver.resolveAddress(v.getHop());
        this.peerPort = hop.getPort();
        this.peerProtocol = v.getTransport();
        this.peerPacketSourceAddress = packet.getAddress();
        this.peerPacketSourcePort = packet.getPort();
        try {
            this.peerAddress = packet.getAddress();
            // Check to see if the received parameter matches
            // the peer address and tag it appropriately.
            boolean hasRPort = v.hasParameter(Via.RPORT);
            if (hasRPort || !hop.getHost().equals(this.peerAddress.getHostAddress())) {
                v.setParameter(Via.RECEIVED, this.peerAddress.getHostAddress());
            }
            if (hasRPort) {
                v.setParameter(Via.RPORT, Integer.toString(this.peerPacketSourcePort));
            }
        } catch (java.text.ParseException ex1) {
            InternalErrorHandler.handleException(ex1);
        }
    } else {
        this.peerPacketSourceAddress = packet.getAddress();
        this.peerPacketSourcePort = packet.getPort();
        this.peerAddress = packet.getAddress();
        this.peerPort = packet.getPort();
        this.peerProtocol = ((Via) viaList.getFirst()).getTransport();
    }
    this.processMessage(sipMessage);
}

Example 85 with DatagramPacket

use of java.net.DatagramPacket in project XobotOS by xamarin.

the class DatagramChannelImpl method receiveImpl.

private SocketAddress receiveImpl(ByteBuffer target, boolean loop) throws IOException {
    SocketAddress retAddr = null;
    DatagramPacket receivePacket;
    int oldposition = target.position();
    int received = 0;
    // TODO: disallow mapped buffers and lose this conditional?
    if (target.hasArray()) {
        receivePacket = new DatagramPacket(target.array(), target.position() + target.arrayOffset(), target.remaining());
    } else {
        receivePacket = new DatagramPacket(new byte[target.remaining()], target.remaining());
    }
    do {
        received = IoBridge.recvfrom(false, fd, receivePacket.getData(), receivePacket.getOffset(), receivePacket.getLength(), 0, receivePacket, isConnected());
        if (receivePacket != null && receivePacket.getAddress() != null) {
            if (received > 0) {
                if (target.hasArray()) {
                    target.position(oldposition + received);
                } else {
                    // copy the data of received packet
                    target.put(receivePacket.getData(), 0, received);
                }
            }
            retAddr = receivePacket.getSocketAddress();
            break;
        }
    } while (loop);
    return retAddr;
}