About endpoints use udp

I tried the sample code in the Ice-3.3.0.pdf book, and it works fine.
I want to Ice use udp protocol to transfer, so I changed the server code to:

Ice::ObjectAdapterPtr adapter
= ic->createObjectAdapterWithEndpoints(
"SimplePrinterAdapter", "udp -p 10000");

changed the client code to:

Ice::ObjectPrx base = ic->stringToProxy(
"SimplePrinter:udp -p 10000");

But it gave me a Ice::NoEndpointException error.
Could someone tell me where I was doing wrong?Thanks a lot!

Hi,

You need to change the proxy mode to "datagram" to be able to use UDP endpoints, for example:

Ice::ObjectPrx base = ic->stringToProxy("SimplePrinter:udp -p 10000");
base = base->ice_datagram();

Cheers,
Benoit.

Hi, benoit:

I add base = base->ice_datagram(); but it throw another exception:
Ice::TwowayOnlyException

slice file:

module Demo {
	interface Printer {
		void printString(string s);
	};
};

I dont have out parameters, and I dont throw a exception ,why I got this error?

Ok, I got it...I must use uncheckedCast because my server only support udp connection.

PrinterPrx printer = PrinterPrx::uncheckedCast(base);