int fraglen = Encdec.dec_uint16le(inB, 8);
        if ( fraglen > getMaxRecv() ) {
            throw new IOException("Unexpected fragment length: " + fraglen);
        }

        while ( have < fraglen ) {
            int r = this.handle.recv(inB, have, fraglen - have);
            if ( r == 0 ) {
                throw new IOException("Unexpected EOF");
            }
            have += r;

        length = Encdec.dec_uint16le(buf, 8);
        if (length > max_recv)
            throw new IOException("Unexpected fragment length: " + length);

        while (off < length) {
            off += in.readDirect(buf, off, length - off);
        }
    }
    public void close() throws IOException {
        state = 0;
        if (out != null)
            out.close();