public AndroidApplicationWebServiceMulticast()
{
AtData += AndroidApplicationWebServiceMulticast_AtData;
new Thread(
delegate()
{
// http://stackoverflow.com/questions/12610415/multicast-receiver-malfunction
// http://answers.unity3d.com/questions/250732/android-build-is-not-receiving-udp-broadcasts.html
// Acquire multicast lock
wifi = (WifiManager)
ScriptCoreLib.Android.ThreadLocalContextReference.CurrentContext.getSystemService(Context.WIFI_SERVICE);
multicastLock = wifi.createMulticastLock("multicastLock");
//multicastLock.setReferenceCounted(true);
multicastLock.acquire();
System.Console.WriteLine("LANBroadcastListener ready...");
try
{
byte[] b = new byte[0x100];
// https://code.google.com/p/android/issues/detail?id=40003
MulticastSocket socket = new MulticastSocket(40404); // must bind receive side
socket.setBroadcast(true);
socket.setReuseAddress(true);
socket.setTimeToLive(30);
socket.setReceiveBufferSize(0x100);
socket.joinGroup(InetAddress.getByName("239.1.2.3"));
System.Console.WriteLine("LANBroadcastListener joinGroup...");
while (true)
{
DatagramPacket dgram = new DatagramPacket((sbyte[])(object)b, b.Length);
socket.receive(dgram); // blocks until a datagram is received
var bytes = new MemoryStream((byte[])(object)dgram.getData(), 0, dgram.getLength());
var listen = Encoding.UTF8.GetString(bytes.ToArray());
//dgram.setLength(b.Length); // must reset length field!s
if (AtData != null)
AtData(listen);
}
}
catch
{
System.Console.WriteLine("client error");
}
}
)
{
Name = "client"
}.Start();
}
static ApplicationWebService()
{
// http://www.zzzxo.com/q/answers-android-device-not-receiving-multicast-package-13221736.html
new Thread(
delegate()
{
// http://stackoverflow.com/questions/12610415/multicast-receiver-malfunction
// http://answers.unity3d.com/questions/250732/android-build-is-not-receiving-udp-broadcasts.html
// Acquire multicast lock
wifi = (WifiManager)ScriptCoreLib.Android.ThreadLocalContextReference.CurrentContext.getSystemService(Context.WIFI_SERVICE);
multicastLock = wifi.createMulticastLock("multicastLock");
//multicastLock.setReferenceCounted(true);
multicastLock.acquire();
System.Console.WriteLine("LANBroadcastListener ready...");
try
{
byte[] b = new byte[0x100];
// https://code.google.com/p/android/issues/detail?id=40003
MulticastSocket socket = new MulticastSocket(40404); // must bind receive side
socket.setBroadcast(true);
socket.setReuseAddress(true);
socket.setTimeToLive(30);
socket.setReceiveBufferSize(0x100);
socket.joinGroup(InetAddress.getByName("239.1.2.3"));
System.Console.WriteLine("LANBroadcastListener joinGroup...");
while (true)
{
DatagramPacket dgram = new DatagramPacket((sbyte[])(object)b, b.Length);
socket.receive(dgram); // blocks until a datagram is received
var bytes = new MemoryStream((byte[])(object)dgram.getData(), 0, dgram.getLength());
var listen = Encoding.UTF8.GetString(bytes.ToArray());
Console.WriteLine(new { listen });
var skip = false;
foreach (var item in data)
{
if (item == listen)
skip = true;
}
if (!skip)
data.Add(listen);
// { listen = http://www.fun2code.de/articles/multicast_images_java/multicast_images_java.html }
//client error, { Message = , StackTrace = java.lang.RuntimeException
// at ScriptCoreLibJava.BCLImplementation.System.Collections.Generic.__List_1.Contains(__List_1.java:102)
// at ScriptCoreLib.Extensions.ListExtensions.AddDistinct(ListExtensions.java:17)
//System.Console.WriteLine("Received "
// + listen
// + " bytes from " + dgram.getAddress());
//dgram.setLength(b.Length); // must reset length field!s
}
}
catch (Exception ex)
{
System.Console.WriteLine("client error, " + new { ex.Message, ex.StackTrace });
}
}
)
{
Name = "client"
}.Start();
}
protected override void onCreate(Bundle savedInstanceState)
{
base.onCreate(savedInstanceState);
var sv = new ScrollView(this);
var b2 = new Button(this);
{
var ll = new LinearLayout(this);
//ll.setOrientation(LinearLayout.VERTICAL);
sv.addView(ll);
var b1 = new Button(this).AttachTo(ll);
b1.WithText("LANBroadcastListener createMulticastLock");
var c = 0;
b1.AtClick(
v =>
{
// server error { Message = , StackTrace = android.os.NetworkOnMainThreadException
//at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1117)
//at libcore.io.BlockGuardOs.sendto(BlockGuardOs.java:175)
//at libcore.io.IoBridge.sendto(IoBridge.java:473)
//at java.net.PlainDatagramSocketImpl.send(PlainDatagramSocketImpl.java:182)
//at java.net.DatagramSocket.send(DatagramSocket.java:284)
new Thread(
delegate()
{
try
{
var socket = new DatagramSocket(); //construct a datagram socket and binds it to the available port and the localhos
c++;
var b = Encoding.UTF8.GetBytes(c + " hi from jvm!"); //creates a variable b of type byte
var dgram = new DatagramPacket((sbyte[])(object)b, b.Length, InetAddress.getByName("239.1.2.3"), 40404);//sends the packet details, length of the packet,destination address and the port number as parameters to the DatagramPacket
//dgram.setData(b);
//System.Console.WriteLine(
// "Sending " + b.Length + " bytes to " + dgram.getAddress() + ":" + dgram.getPort());//standard error output stream
socket.send(dgram); //send the datagram packet from this port
}
catch (Exception ex)
{
System.Console.WriteLine("server error " + new { ex.Message, ex.StackTrace });
}
}
)
{
Name = "sender"
}.Start();
}
);
b2.setText("The other button!");
ll.addView(b2);
this.setContentView(sv);
}
// http://www.zzzxo.com/q/answers-android-device-not-receiving-multicast-package-13221736.html
new Thread(
delegate()
{
// http://stackoverflow.com/questions/12610415/multicast-receiver-malfunction
// http://answers.unity3d.com/questions/250732/android-build-is-not-receiving-udp-broadcasts.html
// Acquire multicast lock
wifi = (WifiManager)getSystemService(Context.WIFI_SERVICE);
multicastLock = wifi.createMulticastLock("multicastLock");
//multicastLock.setReferenceCounted(true);
multicastLock.acquire();
System.Console.WriteLine("LANBroadcastListener ready...");
try
{
byte[] b = new byte[0x100];
// https://code.google.com/p/android/issues/detail?id=40003
var port = 40404;
MulticastSocket socket = new MulticastSocket(port); // must bind receive side
socket.setBroadcast(true);
socket.setReuseAddress(true);
socket.setTimeToLive(30);
socket.setReceiveBufferSize(0x100);
// https://code.google.com/p/android/issues/detail?id=40003
// http://stackoverflow.com/questions/6550618/multicast-support-on-android-in-hotspot-tethering-mode
// http://www.massapi.com/class/java/net/InetSocketAddress.java.html
// http://www.javadocexamples.com/java/net/MulticastSocket/joinGroup(SocketAddress%20mcastaddr,NetworkInterface%20netIf).html
// http://grokbase.com/t/hadoop/common-issues/117jsjk8d7/jira-created-hadoop-7472-rpc-client-should-deal-with-the-ip-address-changes
var group = InetAddress.getByName("239.1.2.3");
var groupSockAddr = new InetSocketAddress(group, port);
// what lan interfaces do we have?
socket.joinGroup(groupSockAddr,
NetworkInterface.getByName("wlan0")
);
System.Console.WriteLine("LANBroadcastListener joinGroup...");
while (true)
{
DatagramPacket dgram = new DatagramPacket((sbyte[])(object)b, b.Length);
socket.receive(dgram); // blocks until a datagram is received
var bytes = new MemoryStream((byte[])(object)dgram.getData(), 0, dgram.getLength());
var listen = Encoding.UTF8.GetString(bytes.ToArray());
System.Console.WriteLine("Received "
+ dgram.getLength()
+ " bytes from " + dgram.getAddress());
//dgram.setLength(b.Length); // must reset length field!s
}
}
catch
{
System.Console.WriteLine("client error");
}
}
)
{
Name = "client"
}.Start();
}
