private MIDIPort(int port)
{
this.port = port;
try {
selector = Selector.Open();
channel = DatagramChannel.Open();
outboundQueue = new Queue <DatagramPacket>();
// inboundQueue = new ConcurrentLinkedQueue<DatagramPacket>();
InetSocketAddress address = new InetSocketAddress(this.port);
channel.Socket().ReuseAddress = true;
channel.ConfigureBlocking(false);
channel.Socket().Bind(address);
channel.Register(selector, Operations.Read | Operations.Write, new UDPBuffer());
Thread newThread = new Thread(new ThreadStart(Run));
newThread.Start();
}
catch (IOException e) {
e.StackTrace.ToString();
}
}
public void Run()
{
Log.Info(TAG, "Started");
try
{
Thread currentThread = Thread.CurrentThread();
while (true)
{
Packet currentPacket;
// TODO: Block when not connected
do
{
currentPacket = (Packet)inputQueue.Poll();
if (currentPacket != null)
{
break;
}
Thread.Sleep(10);
} while (!currentThread.IsInterrupted);
if (currentThread.IsInterrupted)
{
break;
}
InetAddress destinationAddress = currentPacket.ip4Header.destinationAddress;
int destinationPort = currentPacket.udpHeader.destinationPort;
int sourcePort = currentPacket.udpHeader.sourcePort;
Java.Lang.String ipAndPort = new Java.Lang.String(destinationAddress.HostAddress + ":" + destinationPort + ":" + sourcePort);
System.Console.WriteLine("UDP Out: " + ipAndPort);
DatagramChannel outputChannel = (DatagramChannel)channelCache.Get(ipAndPort);
if (outputChannel == null)
{
outputChannel = DatagramChannel.Open();
vpnService.Protect(outputChannel.Socket());
try
{
outputChannel.Connect(new InetSocketAddress(destinationAddress, destinationPort));
}
catch (IOException e)
{
Log.Error(TAG, "Connection error: " + ipAndPort, e);
closeChannel(outputChannel);
ByteBufferPool.Release(currentPacket.backingBuffer);
continue;
}
outputChannel.ConfigureBlocking(false);
currentPacket.SwapSourceAndDestination();
selector.Wakeup();
outputChannel.Register(selector, SelectionKey.OpRead, currentPacket);
channelCache.Put(ipAndPort, outputChannel);
}
try
{
ByteBuffer payloadBuffer = currentPacket.backingBuffer;
while (payloadBuffer.HasRemaining)
{
outputChannel.Write(payloadBuffer);
}
}
catch (IOException e)
{
Log.Error(TAG, "Network write error: " + ipAndPort, e);
channelCache.Remove(ipAndPort);
closeChannel(outputChannel);
}
ByteBufferPool.Release(currentPacket.backingBuffer);
}
}
catch (InterruptedException e)
{
Log.Info(TAG, "Stopping");
}
catch (IOException e)
{
Log.Info(TAG, e.ToString(), e);
}
finally
{
closeAll();
}
}
