@Override
public void frameReceived(final FrameEvent e) {
try {
// with EMI1 frames, there is the possibility we receive some left-over Get-Value responses
// from BCU switching during link setup, silently discard them
final byte[] emi1 = e.getFrameBytes();
if (emi1 != null && BcuSwitcher.isEmi1GetValue(emi1[0] & 0xff)) return;
final CEMI cemi = onReceive(e);
if (cemi instanceof CEMIDevMgmt) {
// XXX check .con correctly (required for setting cEMI link layer mode)
final int mc = cemi.getMessageCode();
if (mc == CEMIDevMgmt.MC_PROPWRITE_CON) {
final CEMIDevMgmt f = (CEMIDevMgmt) cemi;
if (f.isNegativeResponse())
logger.error("L-DM negative response, " + f.getErrorMessage());
}
}
// from this point on, we are only dealing with L_Data
if (!(cemi instanceof CEMILData)) return;
final CEMILData f = (CEMILData) cemi;
final int mc = f.getMessageCode();
if (mc == CEMILData.MC_LDATA_IND) {
addEvent(l -> l.indication(new FrameEvent(source, f)));
logger.debug("indication {}", f.toString());
} else if (mc == CEMILData.MC_LDATA_CON) {
addEvent(l -> l.confirmation(new FrameEvent(source, f)));
logger.debug("confirmation of {}", f.getDestination());
} else
logger.warn("unspecified frame event - ignored, msg code = 0x" + Integer.toHexString(mc));
} catch (final KNXFormatException | RuntimeException ex) {
logger.warn(
"received unspecified frame {}", DataUnitBuilder.toHex(e.getFrameBytes(), ""), ex);
}
}
public void frameReceived(final FrameEvent e) {
try {
final CEMI frame = e.getFrame();
final CEMIBusMon mon;
if (frame == null) mon = (CEMIBusMon) CEMIFactory.fromEmiBusmon(e.getFrameBytes());
else if (frame instanceof CEMIBusMon) mon = (CEMIBusMon) frame;
else {
logger.warn(
"received unsupported frame type with msg code 0x"
+ Integer.toHexString(frame.getMessageCode()));
return;
}
logger.trace("received monitor indication");
final AbstractMonitor netmon = (AbstractMonitor) source;
MonitorFrameEvent mfe = new MonitorFrameEvent(netmon, mon);
if (decode) {
try {
final RawFrame rf =
RawFrameFactory.create(netmon.medium.getMedium(), mon.getPayload(), 0, extBusmon);
mfe = new MonitorFrameEvent(netmon, mon, rf);
} catch (final KNXFormatException ex) {
logger.error("decoding raw frame", ex);
mfe = new MonitorFrameEvent(netmon, mon, ex);
// workaround for PL, BCU might not have switched to ext. busmonitor
if (extBusmon) {
extBusmon = false;
logger.warn("disable extended busmonitor mode, maybe this helps");
}
}
}
addEvent(new Indication(mfe));
} catch (final KNXFormatException kfe) {
logger.warn("unspecified frame event - ignored", kfe);
} catch (final RuntimeException rte) {
logger.warn("unspecified frame event - ignored", rte);
}
}
/**
* Returns a cEMI representation, e.g., cEMI L-Data, using the received frame event for EMI and
* cEMI formats. Override this method if the used message format does not conform to the supported
* EMI 1/2 or cEMI format.
*
* @param e the received frame event
* @return the constructed cEMI message, e.g., cEMI L-Data
* @throws KNXFormatException on unsupported frame formats, or errors in the frame format
*/
protected CEMI onReceive(final FrameEvent e) throws KNXFormatException {
final CEMI f = e.getFrame();
return f != null ? f : CEMIFactory.createFromEMI(e.getFrameBytes());
}