/** write the message body to the output array, starting at the given index */
protected int writeMessageBody(byte out[], int curIndex) throws I2NPMessageException {
if ((_tunnelId == null) || ((_msg == null) && (_msgData == null))) {
_log.log(Log.CRIT, "failing to write out gateway message");
throw new I2NPMessageException(
"Not enough data to write out (id=" + _tunnelId + " data=" + _msg + ")");
}
DataHelper.toLong(out, curIndex, 4, _tunnelId.getTunnelId());
curIndex += 4;
synchronized (this) {
if (_msgData == null) {
_msgData = _msg.toByteArray();
_msg = null;
}
}
DataHelper.toLong(out, curIndex, 2, _msgData.length);
curIndex += 2;
// where is this coming from?
if (curIndex + _msgData.length > out.length) {
_log.log(
Log.ERROR,
"output buffer too small idx: "
+ curIndex
+ " len: "
+ _msgData.length
+ " outlen: "
+ out.length);
throw new I2NPMessageException(
"Too much data to write out (id=" + _tunnelId + " data=" + _msg + ")");
}
System.arraycopy(_msgData, 0, out, curIndex, _msgData.length);
curIndex += _msgData.length;
return curIndex;
}
protected int calculateWrittenLength() {
synchronized (this) {
if (_msgData == null) {
_msgData = _msg.toByteArray();
_msg = null;
}
}
return _msgData.length + 4 + 2;
}