Method PeekData

extra/yassl/src/yassl_int.cpp:1202–1228

like Fill but keep data in buffer

// like Fill but keep data in buffer
void SSL::PeekData(Data& data)
{
    if (GetError()) return;
    uint   dataSz   = data.get_length();        // input, data size to fill
    size_t elements = buffers_.getData().size();

    data.set_length(0);                         // output, actual data filled
    dataSz = min(dataSz, bufferedData());

    Buffers::inputList::iterator front = buffers_.useData().begin();

    while (elements) {
        uint frontSz = (*front)->get_remaining();
        uint readSz  = min(dataSz - data.get_length(), frontSz);
        uint before  = (*front)->get_current();

        (*front)->read(data.set_buffer() + data.get_length(), readSz);
        data.set_length(data.get_length() + readSz);
        (*front)->set_current(before);

        if (data.get_length() == dataSz)
            break;

        elements--;
        front++;
    }
}


// flush output buffer