Hi, I have written an app what is receiving UDP broadcast messages (via WLAN). It is running on an HTC magic (1.6) without any problems. But on a HTC Desire (2.1.1) or Motorola Milestone (2.0.1) we receive nothing. We tryed to send the broadcast by the phone it self, this is working on all phones...
Has anyone a clue what could be wrong?
Thx
Marco
here my code:
---
DatagramSocket dsocket;
try {
dsocket = new
DatagramSocket(BROADCAST_PORT);
dsocket.setReuseAddress(true);
} catch (SocketException e) {
CDebug.getLog().log(Level.SEVERE,
"Could not open
Backend broadcast listener", e);
return;
}
// Create a buffer to read datagrams
into. If a
// packet is larger than this buffer,
the
// excess will simply be discarded!
byte[] buffer = new byte[2048];
// Create a packet to receive data into
the buffer
DatagramPacket packet = new
DatagramPacket(buffer,
buffer.length);
CDebug.getLog().log(Level.FINE,
"Open Backend broadcast
listener on Port: " + BROADCAST_PORT);
dsocket.setSoTimeout(300); // max time
the socket is blocked
// System.out.println("open poard");
// Now loop forever, waiting to receive
packets and printing
// them.
while (true) {
if (stopBroadcastListening) {
dsocket.close();
return;
}
// Wait to receive a datagram
try {
dsocket.receive(packet);
oneBroadcastReceived =
true;
} catch (SocketTimeoutException
e) {
// Debug
// .getLog().info("Backend
broadcast listener timeout");
continue;
} catch (IOException e) {
CDebug
.getLog()
.log(
Level.SEVERE,
"Could not read from Backend broadcast listener socket.
close connection",
e);
dsocket.close();
return;
}
// Convert the contents to a
string, and display them
String msg = new String(buffer,
0, packet.getLength());
InetSocketAddress sender =
(InetSocketAddress) packet
.getSocketAddress();
// System.out.println(sender +
msg);
CDebug.getLog().log(
Level.INFO,
"Receive
Broadcast from "
+ sender.getHostName() + ":" + msg);
try {
ObjectParser.fireEventsForMessage(msg, me,sender);
} catch (Exception e) {
CDebug.getLog().log(
Level.WARNING,
"Could
not compute received message from Backend broadcast:"
+ msg, e);
}
//
System.out.println(packet.getAddress().getHostName()
// +
// ": " + msg);
// Reset the length of the
packet before reusing it.
packet.setLength(buffer.length);
}
} catch (Throwable t) {
CAirport.getInstance().unsetBroadcastListening();
}
}
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