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| #include <iostream>
#include <fstream>
#include <string>
#include <boost/asio.hpp>
#include <boost/regex.hpp>
#include <cstdlib>
#include <algorithm>
#include <filesystem>
#include <random>
#include <iterator>
typedef boost::asio::ip::tcp tcp;
namespace fs = std::experimental::filesystem;
boost::asio::io_service io;
tcp::socket sock{ io };
boost::asio::streambuf sBuf;
std::istream istr{ &sBuf };
std::size_t sizBody{ 0 };
std::ofstream ofs;
char buf[8192];
std::string header;
std::ifstream ifs;
char rw;
unsigned long long fileSize;
unsigned long long sentFileBody = 0;
void handleReadBody(boost::system::error_code const& ec, std::size_t bytesTransferred)
{
auto v = ec.value();
if (ec && ec != boost::asio::error::eof)
{
throw std::runtime_error{ "handleReadBody() : " + std::to_string(ec.value()) + ", " + ec.message() };
}
sizBody += bytesTransferred;
ofs << &sBuf;
std::cout << "sizBody = " << sizBody << std::endl;
if (sizBody != fileSize && ec != boost::asio::error::eof)
{
boost::asio::async_read(sock, sBuf, boost::asio::transfer_at_least(1), handleReadBody);
}
else if (sizBody == fileSize)
{
std::cout << "handleReadBody() : Transfer complete successfully" << std::endl;
}
else
{
throw std::runtime_error{ "handleReadBody() : " + std::to_string(ec.value()) + ", " + ec.message() };
}
}
void handleReadHeader(boost::system::error_code const& ec, std::size_t bytesTransferred)
{
if (ec)
{
throw std::runtime_error{ "handleReadHeader() : " + std::to_string(ec.value()) + ", " + ec.message() };
}
boost::smatch mr;
boost::regex regFileName("FileName: *(.+?)\r\n");
boost::regex regFileSize("FileSize: *([0-9]+?)\r\n");
std::string headers{ std::istreambuf_iterator<char>{istr.rdbuf()}, {} };
std::cout << "Headers:\n" << headers << std::endl;
if (!boost::regex_search(headers, mr, regFileSize))
{
throw std::runtime_error{ "handleReadHeader() : regFileSize not found" };
}
fileSize = std::stoull(mr[1]);
std::cout << "fileSize = " << fileSize << std::endl;
if (!boost::regex_search(headers, mr, regFileName))
{
throw std::runtime_error{ "handleReadHeader() : regFileName not found" };
}
std::string fileName = mr[1];
std::cout << "fileName = " << fileName << std::endl;
std::string newFileName{ "0123456789" };
std::mt19937 eng{ std::random_device{}() };
std::shuffle(newFileName.begin(), newFileName.end(), eng);
fs::path filePathToSave{ "c:/" + newFileName + fs::path{fileName}.extension().string() }; // принятый файл будет создан в корне диска С с рандомным именем
ofs.open(filePathToSave, std::ios::binary);
if (!ofs.is_open())
{
throw std::runtime_error{ "handleReadHeader() : Unable to open output file: " + filePathToSave.string() };
}
std::cout << "sBuf.size() = " << sBuf.size() << std::endl;
if (sizBody != fileSize)
{
boost::asio::async_read(sock, sBuf, boost::asio::transfer_at_least(1), handleReadBody);
}
else
{
std::cout << "handleReadHeader() : Transfer complete successfully" << std::endl;
}
}
void handleWriteBody(boost::system::error_code const& ec, std::size_t bytesTransferred)
{
if (ec)
{
throw std::runtime_error{ "handleWriteBody() : " + std::to_string(ec.value()) + ", " + ec.message() };
}
sentFileBody += bytesTransferred;
if (ifs)
{
ifs.read(buf, std::size(buf));
boost::asio::async_write(sock, boost::asio::buffer(buf, ifs.gcount()), handleWriteBody);
}
else
{
if (sentFileBody != fileSize)
{
throw std::runtime_error{ "handleWriteBody(): sentFileBody != fileSize\n" };
}
std::cout << "sentFileBody: " << sentFileBody << std::endl;
std::cout << "OK" << std::endl;
}
}
void handleWriteHeader(boost::system::error_code const& ec, std::size_t bytesTransferred)
{
if (ec)
{
throw std::runtime_error{ "handleWriteHeader() : " + std::to_string(ec.value()) + ", " + ec.message() };
}
if (rw == 'r')
{
boost::asio::async_read_until(sock, sBuf, "\r\n\r\n", handleReadHeader);
}
else
{
ifs.read(buf, std::size(buf));
boost::asio::async_write(sock, boost::asio::buffer(buf, ifs.gcount()), handleWriteBody);
}
}
void handleConnect(boost::system::error_code const& ec)
{
if (ec)
{
throw std::runtime_error{ "handleConnect() : " + std::to_string(ec.value()) + ", " + ec.message() };
}
std::cout << "Connection established\nIs this client receiver (r) or sender (s)?\n"; // если ввести r то клиент будет ресивером (их может быть несколько), s - сендером
(std::cin >> rw).ignore(std::numeric_limits<std::streamsize>::max(), '\n');
if (rw == 'r')
{
header = "read\r\n\r\n";
}
else
{
std::string filePath{ "D:/downloads/Music/1 2 3.mp4" }; // файл, который сендер отправит ресиверам
ifs.open(filePath, std::ios::binary);
if (!ifs.is_open())
{
throw std::runtime_error{ "handleConnect() : Unable to open input file: " + filePath };
}
fileSize = fs::file_size(filePath);
std::cout << "fileSize: " << fileSize << std::endl;
std::stringstream ss{ "FileName: " + fs::path{ filePath }.filename().string() + "\r\n" + "FileSize: " + std::to_string(fileSize) + "\r\n\r\n" };
header = ss.str();
}
boost::asio::async_write(sock, boost::asio::buffer(header, header.size()), handleWriteHeader);
}
void cleanup()
{
try
{
ifs.close();
ofs.close();
sock.shutdown(tcp::socket::shutdown_both);
sock.close();
}
catch (std::exception& ex)
{
std::cerr << "Exception: " << ex.what() << std::endl;
}
}
int main()
{
system("chcp 1251");
std::cout << "Client\n";
try
{
sock.async_connect(tcp::endpoint{ boost::asio::ip::address::from_string("127.0.0.1"), 9090 }, handleConnect);
io.run();
}
catch (std::exception& ex)
{
std::cerr << "Exception: " << ex.what() << std::endl;
}
cleanup();
system("pause");
} |
(
Сообщение было отмечено Peoples как решение
