public ClientBlockContext(CoapBlockOption blockOption, CoapBlockSize maxBlocksize) {
/* determine the right blocksize (min of remote and max)*/
if (maxBlocksize == null) {
blockSize = blockOption.getBlockSize();
} else {
int max = maxBlocksize.getSize();
int remote = blockOption.getBlockSize().getSize();
if (remote < max) {
blockSize = blockOption.getBlockSize();
} else {
blockSize = maxBlocksize;
}
}
}
public boolean addBlock(CoapMessage msg, CoapBlockOption block) {
int blockPos = block.getBytePosition();
int blockLength = msg.getPayloadLength();
int bufSize = payload.size();
/*TODO: check if payload length = blocksize (except for the last block)*/
if (blockPos > bufSize) {
/* data is missing before this block */
return false;
} else if ((blockPos + blockLength) <= bufSize) {
/* data already received */
return false;
}
int offset = bufSize - blockPos;
payload.write(msg.getPayload(), offset, blockLength - offset);
if (block.isLast()) {
/* was this the last block */
finished = true;
}
return true;
}