@Override
protected void decode(ChannelHandlerContext ctx, ByteBuf in, List<Object> out) throws Exception {
if (in.readableBytes() < 4 * Integer.SIZE / Byte.SIZE) {
return;
}
int numPayloads = in.getInt(in.readerIndex() + 3 * Integer.SIZE / Byte.SIZE);
int index = 4 * Integer.SIZE / Byte.SIZE;
for (int i = 0; i < numPayloads; i++) {
if (in.readableBytes() < index + Integer.SIZE / Byte.SIZE) {
return;
}
int size = in.getInt(in.readerIndex() + index);
index += Integer.SIZE / Byte.SIZE + size;
if (in.readableBytes() < index) {
return;
}
}
int sender = in.readInt();
int dest = in.readInt();
int msgType = in.readInt();
numPayloads = in.readInt();
Msg msg = new Msg(msgType);
msg.setSender(sender);
msg.setDest(dest);
for (int i = 0; i < numPayloads; i++) {
int size = in.readInt();
if (size > 0) {
ByteBuffer buffer = ByteBuffer.allocate(size);
in.readBytes(buffer);
buffer.rewind();
msg.addPayload(buffer);
} else {
msg.addPayload(null);
}
}
out.add(msg);
}
