Re: [Boost-users] How to upload a file with ASIO

Benjamin Sobotta wrote:

Hello,

It would be interesting to know *how* you exactly transfer the information at hand and then build a solution from there.

Anyways, I use ASIO in conjunction with boost::serialization. There is an example on the ASIO website. I found that combination extremely handy. With this approach one could easily transfer any kind of data, for example in a std::vector.

hth,

Benjamin

Hi Benjamin, Find below the relevant snippets of the client and the server code. As you can see, I keep on sending parameters, separated by newlines. Two consecutive newlines denote end of input. This obviously does not scale to a more complex transfer (i.e., a complete binary file). Thanks for your kind assistance, -Ramon ---------------------------------------- Client: // stream boost::asio::streambuf buf; std::ostream net_out(&buf); // Display the arguments if (debug()) cout << "client pushing " << argc - 1 << " arguments" << endl; for (int i = 1; i < argc; i++) { net_out << argv[i] << endl; if (debug()) cout << "arg[" << i << "], " << argv[i] << " was pushed" << endl; } net_out << endl; boost::asio::write(socket, buf); while (true) { boost::array buf; boost::system::error_code error; size_t len = socket.read_some(boost::asio::buffer(buf), error); if (error == boost::asio::error::eof) break; // Connection closed cleanly by peer. else if (error) throw boost::system::system_error(error); // Some other error. cout.write(buf.data(), len); } ---------------------------------------- Server: while (true) { tcp::socket socket(io_service); acceptor.accept(socket); /////////////////////////////////////////////////////////////////////////////////// boost::asio::streambuf buf; boost::system::error_code error; // read till end-of-args marker boost::asio::read_until(socket, buf, "\n\n"); // extract args from buf std::istream net_in(&buf); while (getline(net_in, next_line)) { if (next_line.length()) client_argv.push_back(next_line); } if (debug()) cout << client_argv.size() << " arguments received by server" << endl; /////////////////////////////////////////////////////////////////////////////////// ostringstream response; it_takes_two_to_tango(client_argv, tx, db, response); client_argv.clear(); string message = response.str(); // if (debug()) cout << "Deliver to server:" << endl << message << endl; boost::system::error_code ignored_error; boost::asio::write(socket, boost::asio::buffer(message), boost::asio::transfer_all(), ignored_error); } }