ASIO: sending QString (UTF-16)

21 Oct 2009

      Hello, I am learning ASIO, and I need to send a QString (from QT) thru
async_write.

The "buffer" function does not supports QString, so I wrote my own, is it
correct? "utf16()" returns a pointer to a ushort (16 bit values).

namespace boost {
	namespace asio {

		inline const_buffers_1 buffer(const QString &data)
		{
			return const_buffers_1(const_buffer(data.utf16(),
data.size()*sizeof(ushort)));
		}
	}
};

As an example, I am trying to send HTTP header and data, using a simple HTTP
server sample. As the header needs to be ASCII, I am sending a vector, with
a std::string and a QString, is the way it is done right? (The "message_"
had a Japanese string for effective test that was removed to put on this
email)

	ba::ip::tcp::socket socket_;
	std::vectorba::const_buffer lbuf;
	static std::string header_;
	static QString message_;

std::string connection::header_="HTTP/1.0 200 OK\r\nContent-Type: text/html;
charset=utf-16\r\n\r\n";

QString
connection::message_=QString::fromUtf16(L"<html><head><title>test</title>"
    L"</head><body><h1>Test</h1><p>This is a test!</p>"
	L"</body></html>");

	void handle_read(const boost::system::error_code& error,
                     size_t bytes_transferred)
	{
		lbuf.clear();
		lbuf.push_back(ba::buffer(header_));
		lbuf.push_back(ba::buffer(message_));

		ba::async_write(socket_, lbuf,
			boost::bind(&connection::handle_write,
shared_from_this(),
			ba::placeholders::error,
ba::placeholders::bytes_transferred));
	}

Rangel [LISTAS]

Igor R

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