SIP over UDP Application for Nokia 7650 with J2ME

[hbfornies]

Hello,

I'm developing an java application for a Nokia 7650 that needs to use SIP over UDP.

In an emulator on the PC the communication works fine.

I'm afraid that there will be some problems when I port the application to the real device.

Can I use SIP over UDP communication on a real Nokia 7650?

thanks in advance

Best regards

Hector

[hbfornies]

I add some code example of my application. SIP uses Datagram protocol, which is supported in CLDC.

// Create a new datagram socket.
DatagramConnection dc =
(DatagramConnection)Connector.open("datagram://:5060");

System.out.println("SYSTEM, datagram server listener:" + "datagram://:5060");

while (! sipStack.toExit) {
Datagram datagram =
dc.newDatagram(MAX_DATAGRAM_SIZE);

System.out.println("SYSTEM, listening!");
dc.receive(datagram);
System.out.println("SYSTEM, packet revceived!");

// Create asynchronous message handler
// for this message
UDPMessageChannel udpMessageChannel =
new UDPMessageChannel
(datagram,sipStack);
}
} catch (Exception ex) {
ex.printStackTrace();
}

[ggould]

CLDC "supports" but does not require UDP, so not all valid CLDC devices will provide datagrams. Nokia generally provides only the absolute minimum required by the specification: a fairly dodgy http implementation and nothing more.

As far as I know, no Nokia phones provide datagram connections from Java. If you want datagram support, you should probably look at other handset manufacturers, or else at writing your application in C++ rather than Java.
--G