Cannot send and receive UDP

I'm doing a code to send and receive of UDP. The code works fine on the simulator of 4.2.

But the same code doen't work on the device.

String u = "udp://" + server_addr + ":" + server_port + ";" + client_port + "/internet.beeline.ru|UDP;tunnelauthusername=beeline;tunnelauthpassword=beeline";

socket = (DatagramConnection)Connector.open(u);

Datagram dt = socket.newDatagram( socket.getMaximumLength() );
dt.setData( data, 0, length );

socket.send( dt );

socket.close();

u = "udp://:" + client_port + "/internet.beeline.ru|UDP;tunnelauthusername=beeline;tunnelauthpassword=beeline";

socket = (DatagramConnection)Connector.open(u);

Datagram packet = socket.newDatagram(fullPkt, length);

socket.receive(packet);

BB 8300 with OS throws IOException in an attempt to send UDP in the line of 4.2.2.166

socket.send( dt );

BB 8100 with 4.5.0.110 resembles could not send UDP no exception thrown

but never receive any UDP server.

Such a code should work on 4.5 OS, at least I'm able to see rtsp video to youtube which use UDP.

The cause is the firewall carrier that bloks incoming UDP for the phone.

Also firewall change source port of the datagram received by the server.

The solution I see is to protocols rtsp/rtp simuilate to bypass the firewall of carrier.

Tags: BlackBerry Developers

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