in cpp/src/file_form.cpp [14:25]
string Darabonba_FileForm::Client::getBoundary() {
typedef boost::uniform_int<long long int> NumberDistribution;
typedef boost::mt19937 RandomNumberGenerator;
typedef boost::variate_generator<RandomNumberGenerator&,NumberDistribution> Generator;
NumberDistribution distribution(MIN, MAX);
RandomNumberGenerator generator;
Generator numberGenerator(generator, distribution);
generator.seed(time(nullptr)); // seed with the current time
long long int A=numberGenerator();
return to_string(A);
}