我正在寻找一个现代的libcurl HTTP库,因为C++包装器很难解决C++的缺点。基于Boost.ASIO的解决方案已经成为事实上的C++ TCP库,是首选。
发布于 2010-02-12 19:39:58
前几天有人在another thread上推荐了这个
我认为这是你会发现的最高级别,但我不确定它是否足够成熟(我想说可能是因为他们提出了Boost inclusion)。
发布于 2016-06-04 09:10:47
迟做总比不做好,这是一个老问题的新答案。有一个名为Boost.Beast的新开源库,它使用Boost.Asio同时提供HTTP和WebSocket功能。它尽可能地模拟熟悉的Asio接口,并且获得了大量的文档。它使用bjam或CMake构建在clang、gcc和Visual Studio之上--您可以选择!注意,我也是这个库的作者。
https://github.com/boostorg/beast/
下面是一个检索网页的完整示例程序:
#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;
}
发布于 2010-12-18 05:10:32
您还可以查看Pion Network Library:
https://stackoverflow.com/questions/2251361
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