listen(2048); }; void run(boost::asio::yield_context yield) { boost::system::error_code ec; while (true) { auto session = std::make_shared<session_http>(acceptor_.get_executor().context()); acceptor_.async_accept(session->socket_, yield[ec]); if (ec) { BOOST_LOG_TRIVIAL(error...
socket_type sock(io);//一个socket对象boost::system::error_code ec;//用于获取错误码acceptor.async_accept(sock,yield[ec]);//使用协程,无handlerif(ec)//检查错误码{return; } auto len= sock.async_write_some(//异步写数据,获取字节数buffer("hello coroutine."),yield);//使用协程,无handlerstd:...
yield socket_->async_read_some(buffer(*buffer_),*this); //异步handler是*this, *this是定义的operator()的类,而operator()函数开头的reenter(this*)又保存了上次的执行行数,这就实现了重入 其执行的逻辑为: yield保存了当前协程的状态; 其表达式初始化了异步操作; 定义恢复点为statement后的一条语句; 控...
async_wait(yield); } int main() { asio::io_service ios; tcp::acceptor acceptor(ios, tcp::endpoint(tcp::v4(), 0)); boost::asio::spawn(ios, [&](boost::asio::yield_context yield) { tcp::socket s(ios); acceptor.async_accept(s, yield); // Keep the socket from going out of ...
acceptor.async_accept(pSession->GetSocket(), yield[ec]); if (ec) continue; pSession->Go(); // Will spawn read and write coroutine. } } 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. ...
voiddo_read_header_and_body(){boost::asio::spawn(socket_.get_executor(),[this](boost::asio::yield_context yield){while(true){boost::system::error_code header_ec;boost::asio::async_read(socket_,boost::asio::buffer(read_msg_.data(),chat_message::header_length),yield[header_ec]);if...
http::async_read(stream, buffer, res, yield[ec]); stream.close(); }); m_io.run();if(ec)throwboost::system::system_error(ec);returnstd::move(res); } I have tried both sync/async implementations of a boost http client and I get the exact same problem. ...
1 reenter (this) 2 { 3 do 4 { 5 socket_.reset(new tcp::socket(io_service_)); 6 yield acceptor->async_accept(*socket_, *this); 7 fork server(*this)(); 8 } while (is_parent()); 9 // client-specific handling follows 10 } 这个分4个步骤实现 : fork 保存当前的协程状态. 创建...
asio::spawn(io_context, [&, endpoints, i](asio::yield_context yield) { UCHAR vIndex = i; tcp::socket socket(io_context); websocket::stream<tcp::socket> ws(std::move(socket)); boost::system::error_code ec; asio::async_connect(ws.next_layer(), endpoints, yield[ec]); ...
以上便是针对yield return async_foo()形式的调用进行的示例分析,除此之外,还有yield;,yield break,yield async_foo()三种使用方式。 yield;和yield aysnc_foo()效果都是中止operate(),控制权返回到 manager。实现原理是yield展开中310行结束后,由于307行的 for 结构导致跳转到 308 行,进而 309 行跳转到reenter...