我用于 asio 代码的链接是 https://www.boost.org/doc/libs/1_55_0/doc/html/boost_asio/tutorial/tutdaytime1.html
#include <iostream>
#include <boost/asio.hpp>
#include <boost/array.hpp>
// #include <src.hpp>
using boost::asio::ip::tcp;
int main(int argc, char *argv[])
{
std::cout << "Started" << std::endl;
try{
boost::asio::io_context io;
boost::asio::steady_timer t(io, boost::asio::chrono::seconds(5));
tcp::resolver resolver(io);
tcp::resolver::results_type endpoints = resolver.resolve(argv[1],"daytime");
tcp::socket socket(io);
boost::asio::connect(socket,endpoints);
boost::array<char,128> buf;
boost::system::error_code error;
size_t len = socket.read_some(boost::asio::buffer(buf), error);
if (error == boost::asio::error::eof)
{
std::cout << "No Errors" << std::endl;
}
else if(error){
throw boost::system::system_error(error);
}
std::cout << "Data is: ";
std::cout.write(buf.data(), len);
io.run();
}
catch(std::exception& e){
std::cerr << e.what() << std::endl;
}
return 0;
}
我尝试为白天的 tcp 客户端运行代码时遇到分段错误,但我没有 知道为什么。它表示缓冲区功能自动防止参考上的缓冲区溢出。 我只是需要它不给我一个分段错误,我对 C++ 或网络都没有经验。
可能会出现段错误,因为您使用的命令行参数未传递?
对参数进行硬编码:
tcp::resolver::results_type endpoints = resolver.resolve("127.0.0.1", "daytime");
或者检查参数是否存在:
if (argc < 2) {
std::cerr << "Usage: " << argv[0] << " HOSTNAME" << std::endl;
return 1;
}