[boost] [asio] ip::tcp::iostream usage

The classic example: int main() { boost::asio::ip::tcp::iostream s("www.boost.org", "http"); s << "GET / HTTP/1.0\r\n"; s << "Host: www.boost.org\r\n"; s << "\r\n" << std::flush; std::cout << s.rdbuf(); return 0; } It works. But with a server on port 8080, it does not seem to work anymore. The host line was changed to s << "Host: www.boost.org:8080\r\n"; of course.