这不是重复的! (这不是关于UDP,它是TCP,这不是C#,Python或其他,它是C++)C++ boost :: asio无法连接,因为目标机器主动拒绝它
如果我试图通过我的外部IP连接,我得到标题中描述的错误。但是,它通过“本地主机”或“127.0.0.1”(我在同一台机器上运行client.exe和server.exe)工作。这段代码是从一个例子中复制出来的,我做了一些小改动。
编辑:我给了两个可执行文件的防火墙权限。但问题仍然存在。
服务器:
#include <ctime>
#include <iostream>
#include <string>
#include <boost/asio.hpp>
using boost::asio::ip::tcp;
std::string make_daytime_string()
{
using namespace std; // For time_t, time and ctime;
time_t now = time(0);
return ctime(&now);
}
int main()
{
try
{
boost::asio::io_service io_service;
tcp::acceptor acceptor(io_service, tcp::endpoint(tcp::v4(), 62000));
for (;;)
{
tcp::socket socket(io_service);
acceptor.accept(socket);
std::string message = make_daytime_string();
boost::system::error_code ignored_error;
boost::asio::write(socket, boost::asio::buffer(message), ignored_error);
}
}
catch (std::exception& e)
{
std::cerr << e.what() << std::endl;
}
return 0;
}
客户:
#include <iostream>
#include <boost/array.hpp>
#include <boost/asio.hpp>
using boost::asio::ip::tcp;
int main(int argc, char* argv[])
{
try
{
boost::asio::io_service io_service;
tcp::resolver resolver(io_service);
tcp::resolver::query query("localhost", "62000");
tcp::resolver::iterator endpoint_iterator = resolver.resolve(query);
tcp::endpoint endpoint = *endpoint_iterator;
std::cout << endpoint << "\n\n";
tcp::socket socket(io_service);
boost::asio::connect(socket, endpoint_iterator);
for (;;)
{
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)
break; // Connection closed cleanly by peer.
else if (error)
throw boost::system::system_error(error); // Some other error.
std::cout.write(buf.data(), len);
}
}
catch (std::exception& e)
{
std::cerr << e.what() << std::endl;
}
std::cout << "\n\n";
system("pause");
return 0;
}
检查计算机的防火墙设置 –
在发布此线程之前,我曾尝试过。它不起作用。 – bitcode
This [answer](http://stackoverflow.com/a/15036553/1053968)可能会有所帮助。特别是,可能需要调查路由设备的功能/配置(回送和端口转发)。 –