Boost Asio Buffer Sequence

main.cpp

#include <cstdlib>
#include <cstring>
#include <iostream>
#include <string>
#include <vector>
#include <boost/asio.hpp>

using boost::asio::ip::tcp;

int main(int argc, char** argv) {
	boost::asio::io_service io_service;

	tcp::resolver resolver(io_service);
	tcp::resolver::query query(tcp::v4(), "127.0.0.1", "12345");
	tcp::resolver::iterator iterator = resolver.resolve(query);

	tcp::socket s(io_service);
	boost::asio::connect(s, iterator);

	std::string s1("123\n");
	std::string s2("hello\n");
	std::string s3("world\n");
	std::string s4("321\n");
	std::string s5("test\n");

	std::vector<boost::asio::const_buffer> b;
	b.push_back(boost::asio::buffer(s1)+2);
	b.push_back(boost::asio::buffer(s2));
	b.push_back(boost::asio::buffer(s3));
	b.push_back(boost::asio::buffer(s4));
	b.push_back(boost::asio::buffer(s5));

	s.async_write_some(b, [] (const boost::system::error_code& error, std::size_t bytes_transferred) {
		std::cerr << "ec=" << error << " size=" << bytes_transferred << std::endl;
	});

	io_service.run();

	return 0;
}