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24.8. Datagrams
The connections we've talked about up to now have all been stream connections. However, just as in J2SE, UDP is a notable exception. UDP, whether implemented through standard I/O or the Generic Connection Framework, just isn't suited to a stream metaphor. In GCF, UDP is handled through the DatagramConnection and Datagram classes. These take the place of DatagramSocket and DatagramPacket in J2SE. Like the socket protocol, support for UDP and the datagram protocol is optional. Some devices support it; some don't.
24.8.1. Datagram URLs
Datagram URLs take two forms. Client URLs for sending data look like this:
