Why getting IOException when pinging to rechable host using ICMPClient of POCO library?

I could not use POCO ping functionality as getting IOException when pinging to reachable host. Below is my ping example:

#include "Poco/Net/ICMPClient.h"
#include "Poco/Net/IPAddress.h"
#include "Poco/Net/ICMPEventArgs.h"
#include "Poco/Delegate.h"
#include <iostream>


using Poco::Net::ICMPClient;
using Poco::Net::IPAddress;
using Poco::Net::ICMPEventArgs;


class PingExample {
public:
PingExample(): 
    _icmpClient(IPAddress::IPv4)
{
    _icmpClient.pingBegin += Poco::delegate(this, &PingExample::onBegin);
    _icmpClient.pingReply += Poco::delegate(this, &PingExample::onReply);
    _icmpClient.pingError += Poco::delegate(this, &PingExample::onError);
    _icmpClient.pingEnd   += Poco::delegate(this, &PingExample::onEnd);
}


int start_ping(const std::string& host)
{
    _icmpClient.ping(host);
}


void onBegin(const void* pSender, ICMPEventArgs& args)
{
    std::cout << "Pinging " << args.hostName() << " [" << args.hostAddress() << "] with " << args.dataSize() << " bytes of data:" 
       << std::endl << "---------------------------------------------" << std::endl;
}

void onReply(const void* pSender, ICMPEventArgs& args)
{
    std::cout << "Reply from " << args.hostAddress()
       << " bytes=" << args.dataSize() 
       << " time=" << args.replyTime() << "ms"
       << " TTL=" << args.ttl();
}

void onError(const void* pSender, ICMPEventArgs& args)
{
    std::cout << args.error();
}

void onEnd(const void* pSender, ICMPEventArgs& args)
{
    std::cout << std::endl << "--- Ping statistics for " << args.hostName() << " ---"
       << std::endl << "Packets: Sent=" << args.sent() << ", Received=" << args.received()
       << " Lost=" << args.repetitions() - args.received() << " (" << 100.0 - args.percent() << "% loss),"
       << std::endl << "Approximate round trip times in milliseconds: " << std::endl
       << "Minimum=" << args.minRTT() << "ms, Maximum=" << args.maxRTT()  
       << "ms, Average=" << args.avgRTT() << "ms" 
       << std::endl << "------------------------------------------";
}

private:
       ICMPClient  _icmpClient;
};

int main(int argc, char** argv)
{
    PingExample p;
    p.start_ping("localhost");
    while (true);
    return 0;
}

Getting the following exception when running this code:

terminate called after throwing an instance of 'Poco::IOException'
what():  I/O error
Aborted (core dumped)

The same exception is getting when

• running Net/samples/Ping/src/Ping.cpp test case without any argument (in this case it should ping to localhost) or when specifying the target as argument
• trying to ping to SocketAddres.
• trying to ping to reachable host not to localhost.

What is the reason of getting IOException exception?

ICMPClient uses raw sockets. That means that you have to run your executable with root permission. See here: Raw sockets need root priviliege