(const boost::system::error_code& ec, boost::asio::ip::tcp::resolver::iterator it) { if (!ec) { sock.async_connect(*it, connect_handler); } } int main() { boost::asio::ip::tcp::resolver::query query("www.baidu.com", "80"); resolver.async_resolve(query, resolve_handler);...
这是因为Boost.Asio在添加了其他I / O对象之前很早就支持网络功能。 网络功能非常适合异步操作，因为通过...
ec) { Socket.async_connect(*it,ConnectHandler); std::cout<<(*it).service_name()<<std::endl; } else std::cout<<"解析失败"<<std::endl; } int main() { boost::asio::ip::tcp::resolver::query query("www.highscore.de","80"); Resolver.async_resolve(query,ResolverHandler); Io...
Boost.Asio may use one or more hidden threads to emulate asynchronous functionality(async_resolve()就会创建额外的内部线程来执行). The above requirements are intended to prevent these hidden threads from making calls to program code. This means that a program can, for example, use thread-unsafe r...
boost::asio::io_service ioservice; tcp::resolver resolver(ioservice); tcp::resolver::query query("www.google.com","80"); tcp::resolver::iterator it=resolver.resolve(query); tcp::resolver::iterator end;while(it!=end) { tcp::endpoint ep= *it; ...
boost::asio::io_service io_service; boost::asio::deadline_timer timer(io_service, boost::posix_time::seconds(5)); timer.async_wait(handler); io_service.run(); return 0; } 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. ...
async_read_some(boost::asio::buffer(buffer), read_handler); } } void resolve_handler(const boost::system::error_code &ec, boost::asio::ip::tcp::resolver::iterator it) { if (!ec) { sock.async_connect(*it, connect_handler); } } int main() { boost::asio::ip::tcp::resolver::...
发送数据也使用了异步方式(async_write_some), 同样要保证在整个异步发送期间缓冲区的有效性,所以也用boost::bind绑定了boost::shared_ptr。 对于客户端也一样,在connect和read_some方法前加一个async_前缀,然后加入回调即可,大家自己练习写一写。 ASIO的“便民措施” ...
boost::asio::io_service service; TCPServer server(service, 12345); service.run(); return 0; } 在上面的示例中,我们首先创建了一个io_service对象来驱动异步操作。然后,我们创建了一个TCPServer类来处理客户端连接。在构造函数中,我们使用async_accept()来接受客户端连接,并在成功连接时调用handleRead()来...
4)异步连接:由于async_connect只接受boost::basic_socket类即最底层的socket作为参数,因此需要调用lowest_layer。1void handle_resolve(const boost::system::error_code& e,boost::asio::ip::tcp::resolver::iterator endpoint_iterator)2{3 if (!e)4 boost::asio::async_connect(socket_->lowest_layer(), ...