How to get the hostname of the node in C++?
In C++, how to get the hostname of the node?
In C++, the C way works too. However, with Boost, you can use the boost::asio::ip::host_name() function to get the hostname as a std::string:
namespace boost {
namespace asio {
namespace ip {
/// Get the current host name.
BOOST_ASIO_DECL std::string host_name();
...
More at http://www.boost.org/doc/libs/1_63_0/boost/asio/ip/host_name.hpp
One example:
The boost-host-name.cpp
#include <iostream>
#include <algorithm>
#include <boost/asio.hpp>
namespace ip = boost::asio::ip;
int main()
{
boost::asio::io_service io_service;
std::string h = ip::host_name();
std::cout << "hostname: " << h << 'n';
}
Build and run it:
$ g++ boost-host-name.cpp -o host-name -lboost_system
$ ./host-name
hostname: host001