#include <asio.hpp>
#include <boost/shared_ptr.hpp>
#include <vector>
#include "yield.hpp"
using asio::async_write;
using asio::buffer;
using asio::ip::tcp;
using asio::error_code;
using std::size_t;
struct session : coroutine
{
 boost::shared_ptr<tcp::socket> socket_;
 boost::shared_ptr<std::vector<char>> buffer_;
 session(boost::shared_ptr<tcp::socket> socket)
 : socket_(socket),
 buffer_(new std::vector<char>(1024))
 {
 }
 void operator()(error_code ec = error_code(), size_t n = 0);
};
struct server : coroutine
{
 asio::io_service& io_service_;
 boost::shared_ptr<tcp::acceptor> acceptor_;
 boost::shared_ptr<tcp::socket> socket_;
 server(asio::io_service& io_service)
 : io_service_(io_service),
 acceptor_(new tcp::acceptor(io_service, tcp::endpoint(tcp::v4(), 54321)))
 {
 }
 void operator()(error_code ec = error_code());
};
// @[session]
void session::operator()(error_code ec, size_t n) // #808080
{ // #808080
 if (!ec) reenter (this) // #808080
 { // #808080
 for (;;) // #d00000
 { // #d00000
 yield socket_->async_read_some(buffer(*buffer_), *this); // #d00000
 yield async_write(*socket_, buffer(*buffer_, n), *this); // #d00000
 } // #d00000
 } // #808080
} // #808080
// @[server]
void server::operator()(error_code ec) // #808080
{ // #808080
 reenter (this) // #808080
 { // #808080
 for (;;) // #d00000
 { // #d00000
 socket_.reset(new tcp::socket(io_service_)); // #d00000
 yield acceptor_->async_accept(*socket_, *this); // #d00000
 io_service_.post(session(socket_)); // @->[session] // #d00000
 } // #d00000
 } // #808080
} // #808080
int main()
{
 asio::io_service io_service;
 io_service.post(server(io_service));
 io_service.run();
}
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