在阅读
以下是文档中的代码,仅供参考:
coroutine2
文档时,我发现了一个漂亮的 代码片段,展示了如何与 asio
一起使用它。以下是文档中的代码,仅供参考:
void session(boost::asio::io_service& io_service){
// construct TCP-socket from io_service
boost::asio::ip::tcp::socket socket(io_service);
try{
for(;;){
// local data-buffer
char data[max_length];
boost::system::error_code ec;
// read asynchronous data from socket
// execution context will be suspended until
// some bytes are read from socket
std::size_t length=socket.async_read_some(
boost::asio::buffer(data),
boost::asio::yield[ec]);
if (ec==boost::asio::error::eof)
break; //connection closed cleanly by peer
else if(ec)
throw boost::system::system_error(ec); //some other error
// write some bytes asynchronously
boost::asio::async_write(
socket,
boost::asio::buffer(data,length),
boost::asio::yield[ec]);
if (ec==boost::asio::error::eof)
break; //connection closed cleanly by peer
else if(ec)
throw boost::system::system_error(ec); //some other error
}
} catch(std::exception const& e){
std::cerr<<"Exception: "<<e.what()<<"\n";
}
}
然而,我在asio文档中找不到可用的示例,并尝试在coliru上编译此片段会导致与yield
相关的编译器错误。
您是否知道一个使用coroutine2
作为上面示例所示的最小客户端/服务器实现?