@Override
public OFBsnPduTxRequest readFrom(ChannelBuffer bb) throws OFParseError {
int start = bb.readerIndex();
// fixed value property version == 1
byte version = bb.readByte();
if (version != (byte) 0x1)
throw new OFParseError("Wrong version: Expected=OFVersion.OF_10(1), got=" + version);
// fixed value property type == 4
byte type = bb.readByte();
if (type != (byte) 0x4)
throw new OFParseError("Wrong type: Expected=OFType.EXPERIMENTER(4), got=" + type);
int length = U16.f(bb.readShort());
if (length < MINIMUM_LENGTH)
throw new OFParseError(
"Wrong length: Expected to be >= " + MINIMUM_LENGTH + ", was: " + length);
if (bb.readableBytes() + (bb.readerIndex() - start) < length) {
// Buffer does not have all data yet
bb.readerIndex(start);
return null;
}
if (logger.isTraceEnabled()) logger.trace("readFrom - length={}", length);
long xid = U32.f(bb.readInt());
// fixed value property experimenter == 0x5c16c7L
int experimenter = bb.readInt();
if (experimenter != 0x5c16c7)
throw new OFParseError(
"Wrong experimenter: Expected=0x5c16c7L(0x5c16c7L), got=" + experimenter);
// fixed value property subtype == 0x1fL
int subtype = bb.readInt();
if (subtype != 0x1f)
throw new OFParseError("Wrong subtype: Expected=0x1fL(0x1fL), got=" + subtype);
long txIntervalMs = U32.f(bb.readInt());
OFPort portNo = OFPort.read2Bytes(bb);
short slotNum = U8.f(bb.readByte());
// pad: 3 bytes
bb.skipBytes(3);
byte[] data = ChannelUtils.readBytes(bb, length - (bb.readerIndex() - start));
OFBsnPduTxRequestVer10 bsnPduTxRequestVer10 =
new OFBsnPduTxRequestVer10(xid, txIntervalMs, portNo, slotNum, data);
if (logger.isTraceEnabled()) logger.trace("readFrom - read={}", bsnPduTxRequestVer10);
return bsnPduTxRequestVer10;
}
