boost-asio

问题 The property could be described like so: if the action gets cancelled, it's handler is guaranteed to be executed with an error . For example, the boost::asio::deadline_timer doesn't have this property as described in the Remarks section of documentation for deadline_timer::cancel function. So it is possible that even though one cancels a waiting operation on a timer, its callback gets executed without an error. On the other hand, the property holds for asio sockets (at least I hope so :) as

问题 I'm trying to hack a client together in C++ using Google's Protocol Buffers and boost::asio. My problem is that I don't know how I can feed the protobuf message to asio. What I have is this: // set up *sock - works PlayerInfo info; info.set_name(name); // other stuff Now I know that the following is wrong, but I'll post it anyways: size_t request_length = info.ByteSize(); boost::asio::write(*sock, boost::asio::buffer(info, request_length)); I got as far as that I know that I have to pack my

问题 I'm trying to hack a client together in C++ using Google's Protocol Buffers and boost::asio. My problem is that I don't know how I can feed the protobuf message to asio. What I have is this: // set up *sock - works PlayerInfo info; info.set_name(name); // other stuff Now I know that the following is wrong, but I'll post it anyways: size_t request_length = info.ByteSize(); boost::asio::write(*sock, boost::asio::buffer(info, request_length)); I got as far as that I know that I have to pack my

问题 I am writing a client server application using boost::asio. I want to transfer a structure from a client to the server. The struct has a few std::wstrings in it. How do I encode the structure in boost::asio::buffer? 回答1: Typically I use boost::asio::streambuf for serializing structures. Message.h #ifndef MESSAGE_H #define MESSAGE_H #include <boost/serialization/string.hpp> #include <string> struct Message { std::string _a; std::string _b; template <class Archive> void serialize( Archive& ar,

问题 Currently I´m not sure, I try to make a high-performance server, I got a 6Core CPU, so if I would use the "io_service_per_cpu" design, I have 6 io_service´s. I already heard that the threadpool design isn´t the best one, but I´m not sure about that. What knowledge do you have? Someone already made a Stress test with each, or something else? 回答1: In my experience it is vastly easier to approach asynchronous application design with the following order: single thread and a single io_service

问题 Currently I´m not sure, I try to make a high-performance server, I got a 6Core CPU, so if I would use the "io_service_per_cpu" design, I have 6 io_service´s. I already heard that the threadpool design isn´t the best one, but I´m not sure about that. What knowledge do you have? Someone already made a Stress test with each, or something else? 回答1: In my experience it is vastly easier to approach asynchronous application design with the following order: single thread and a single io_service

问题 I am trying to implement double buffering for my network server when it sends to clients. The idea came from boost::asio::async_write - ensure only one outstanding call Unfortunately, as great as it looks, I am getting an error when I try to run it. AFAIK, I am not using any iterators, so I assume the async_write is when it attempts to complete, but I don't know what is really causing the problem. The error occurs after the first async_write is posted. The error is "vector iterator not

问题 I am using Boost.Asio ssl streams, and got a working encrypted socket from which I can send and receive bytes. I successfully did a GET request with the following code : // Construct HTTP request (using vanilla std::ostream) std::ostream request_stream(&request); request_stream << "GET / HTTP/1.0\r\n"; request_stream << "Host: " << argv[1] << "\r\n"; ... // Send request ssl::stream<tcp::socket> socket boost::asio::write(socket, request); And I would now love to find a small C++ library that

问题 I'm trying to serialize objects/messages and send them as UDP packets between nodes. I'm currently looking at cereal for serialization and boost::asio for actual network programming. Are there any examples of using these two libraries together, even if it's pseudocode? 回答1: You can treat any example of Boost Serialization with Asio as the pseudo code example. Despite some differences, Cereal is similar enough to Boost Serialization for the samples to be relevant. Straight forward: sending

问题 I'm trying to serialize objects/messages and send them as UDP packets between nodes. I'm currently looking at cereal for serialization and boost::asio for actual network programming. Are there any examples of using these two libraries together, even if it's pseudocode? 回答1: You can treat any example of Boost Serialization with Asio as the pseudo code example. Despite some differences, Cereal is similar enough to Boost Serialization for the samples to be relevant. Straight forward: sending