How to use

readByte

method

in

org.jgroups.util.ByteArrayDataInputStream

protected static Message readMessage(byte[] buf, int offset, int length) throws Exception {
  ByteArrayDataInputStream in=new ByteArrayDataInputStream(buf, offset, length);
  short ver=in.readShort();
  byte flags=in.readByte();
  // final boolean multicast=(flags & (byte)2) == (byte)2;
  Message msg=new Message(false); // don't create headers, readFrom() will do this
  msg.readFrom(in);
  return msg;
}

/** Reads the message's contents from an input stream, but skips the buffer and instead returns the
 * position (offset) at which the buffer starts */
public int readFromSkipPayload(ByteArrayDataInputStream in) throws Exception {
  // 1. read the leading byte first
  byte leading=in.readByte();
  // 2. the flags
  flags=in.readShort();
  // 3. dest_addr
  if(Util.isFlagSet(leading, DEST_SET))
    dest_addr=Util.readAddress(in);
  // 4. src_addr
  if(Util.isFlagSet(leading, SRC_SET))
    src_addr=Util.readAddress(in);
  // 5. headers
  int len=in.readShort();
  headers=createHeaders(len);
  for(int i=0; i < len; i++) {
    short id=in.readShort();
    Header hdr=readHeader(in).setProtId(id);
    this.headers[i]=hdr;
  }
  // 6. buf
  if(!Util.isFlagSet(leading, BUF_SET))
    return -1;
  length=in.readInt();
  return in.position();
}

GossipType type;
try {
  type=GossipType.values()[in.readByte()];
  in.position(Global.BYTE_SIZE);

protected static Message readMessage(byte[] buf, int offset, int length) throws Exception {
  ByteArrayDataInputStream in=new ByteArrayDataInputStream(buf, offset, length);
  short ver=in.readShort();
  byte flags=in.readByte();
  // final boolean multicast=(flags & (byte)2) == (byte)2;
  Message msg=new Message(false); // don't create headers, readFrom() will do this
  msg.readFrom(in);
  return msg;
}

/** Reads the message's contents from an input stream, but skips the buffer and instead returns the
 * position (offset) at which the buffer starts */
public int readFromSkipPayload(ByteArrayDataInputStream in) throws Exception {
  // 1. read the leading byte first
  byte leading=in.readByte();
  // 2. the flags
  flags=in.readShort();
  // 3. dest_addr
  if(Util.isFlagSet(leading, DEST_SET))
    dest_addr=Util.readAddress(in);
  // 4. src_addr
  if(Util.isFlagSet(leading, SRC_SET))
    src_addr=Util.readAddress(in);
  // 5. headers
  int len=in.readShort();
  headers=createHeaders(len);
  for(int i=0; i < len; i++) {
    short id=in.readShort();
    Header hdr=readHeader(in).setProtId(id);
    this.headers[i]=hdr;
  }
  // 6. buf
  if(!Util.isFlagSet(leading, BUF_SET))
    return -1;
  length=in.readInt();
  return in.position();
}

GossipType type;
try {
  type=GossipType.values()[in.readByte()];
  in.position(Global.BYTE_SIZE);