基于Boost.ASIO的HTTP客户端库（如libcurl）

我正在寻找一个现代的C ++ HTTP库，因为libcurl的缺点很难被C ++包装所解决。 基于已经成为事实上的C ++ TCP库的Boost.ASIO的解决scheme是首选。

Answer 1

有一天有人推荐了另一个线程 ：

http://cpp-netlib.github.com/

我认为这是高层次的，但是我不确定它是否足够成熟（我可以说这可能是因为他们已经提出了增强包含）。

Answer 2

迟到比晚起好，这是一个老问题的新答案。 这个新的开放源代码库称为Boost.Beast，它使用Boost.Asio提供HTTP和WebSocketfunction。 它尽可能地模拟熟悉的Asio接口，并有大量的文档。 它build立在clang，gcc和Visual Studio上，使用bjam或CMake – 你的select！ 请注意，我也是图书馆的作者。

https://github.com/boostorg/beast/

这是一个完整的示例程序，用于检索网页：

#include <boost/beast/core.hpp> #include <boost/beast/http.hpp> #include <boost/beast/version.hpp> #include <boost/asio/connect.hpp> #include <boost/asio/ip/tcp.hpp> #include <cstdlib> #include <iostream> #include <string> using tcp = boost::asio::ip::tcp; // from <boost/asio/ip/tcp.hpp> namespace http = boost::beast::http; // from <boost/beast/http.hpp> // Performs an HTTP GET and prints the response int main(int argc, char** argv) { try { // Check command line arguments. if(argc != 4 && argc != 5) { std::cerr << "Usage: http-client-sync <host> <port> <target> [<HTTP version: 1.0 or 1.1(default)>]\n" << "Example:\n" << " http-client-sync www.example.com 80 /\n" << " http-client-sync www.example.com 80 / 1.0\n"; return EXIT_FAILURE; } auto const host = argv[1]; auto const port = argv[2]; auto const target = argv[3]; int version = argc == 5 && !std::strcmp("1.0", argv[4]) ? 10 : 11; // The io_context is required for all I/O boost::asio::io_context ioc; // These objects perform our I/O tcp::resolver resolver{ioc}; tcp::socket socket{ioc}; // Look up the domain name auto const results = resolver.resolve(host, port); // Make the connection on the IP address we get from a lookup boost::asio::connect(socket, results.begin(), results.end()); // Set up an HTTP GET request message http::request<http::string_body> req{http::verb::get, target, version}; req.set(http::field::host, host); req.set(http::field::user_agent, BOOST_BEAST_VERSION_STRING); // Send the HTTP request to the remote host http::write(socket, req); // This buffer is used for reading and must be persisted boost::beast::flat_buffer buffer; // Declare a container to hold the response http::response<http::dynamic_body> res; // Receive the HTTP response http::read(socket, buffer, res); // Write the message to standard out std::cout << res << std::endl; // Gracefully close the socket boost::system::error_code ec; socket.shutdown(tcp::socket::shutdown_both, ec); // not_connected happens sometimes // so don't bother reporting it. // if(ec && ec != boost::system::errc::not_connected) throw boost::system::system_error{ec}; // If we get here then the connection is closed gracefully } catch(std::exception const& e) { std::cerr << "Error: " << e.what() << std::endl; return EXIT_FAILURE; } return EXIT_SUCCESS; } 

Answer 3

asio作者实现：

• http://think-async.com/Urdl
• http://sourceforge.net/projects/urdl

Answer 4

您还应该检查出Pionnetworking库：

http://pion.org/projects/pion-network-library

Answer 5

Boost.Http – 这里有一个新玩家： https ： //github.com/BoostGSoC14/boost.http，docs – http://boostgsoc14.github.io/boost.http/

Answer 6

有这个项目试图“boostify”libcurl： https ： //github.com/breese/trial.url

我将用它作为deviseBoost.Http客户端API的参考。 不过，我打算专注于高层次的抽象，并尽可能地与Beast.HTTP作者合作。