private void init(Interface intf) throws IOException {
if (intf == null || intf.getNumEndpoints() != 2) throw new IllegalArgumentException();
// XXX presumably this handles the "multiple devfs claims" case; check.
intf.claim();
this.intf = intf;
try {
for (int i = 0; i < intf.getNumEndpoints(); i++) {
Endpoint ep = intf.getEndpoint(i);
if (!"bulk".equals(ep.getType())) throw new IllegalArgumentException();
if (ep.isInput()) in = ep.getInputStream();
else out = ep.getOutputStream();
}
if (in == null || out == null) throw new IllegalArgumentException();
} catch (IOException e) {
try {
close();
} catch (Exception x) {
intf = null;
}
throw e;
} catch (RuntimeException e) {
try {
close();
} catch (Exception x) {
intf = null;
}
throw e;
}
}
public void close() throws IOException {
in = null;
out = null;
if (random != null) {
random.close();
random = null;
} else if (socket != null) {
socket.close();
socket = null;
}
}
/**
* Finalization releases the interface, if it has not already been released by invoking close().
*/
protected void finalize() throws IOException {
close();
}