What networking operations can a MIDP application perform?
MIDP defines a networking API called the Generic Connection Framework (GCF). This is a highly abstract representation of the fundamental things that an application can to do over a network, that is, send data and receive data. To use the GCF, the application supplies a URL to the (static) Connector class, and gets back an object that implements the InputConnection and OutputConnection interfaces. Methods on these interfaces allow the creation of input and output streams to the remote system. These streams can then be used to send and receive data. Apart from the URL itself, no part of this process depends on the network protocol. In practice, a MIDP device will probably support only HTTP, and unless the URL begins http:// the connection will usually fail. Moreover, an HTTP transaction consists of more than simply establishing a data stream in each direction. The device will probably need to set specific HTTP request header items, and parse the HTTP response headers. As a result, MIDP p
