gistfile1.cpp

  void DownloadOperation::step() {
    #define BUFFSIZE 200
    char buf[BUFFSIZE];
    std::streamsize readamount = this->httpstream.rdbuf()->sgetn(buf, BUFFSIZE);
    if(!this->httpstream.eof()) {
      this->outfile.write(buf, readamount);
    } else {
      status_mutex.lock();
      this->completed = true;
      status_mutex.unlock();
    }
  }