Error in connecting sockets in c++ - c++

Question

I am using this code snippet from an internet website, and according to it, this code works fine. But I'm unable to connect to server. Code and error are given below:
This is the code:
#include <iostream>
#include <winsock2.h>
#include <string>
#include <conio.h>
int main()
{
WSAData version; //We need to check the version.
WORD mkword = MAKEWORD(2, 2);
int what = WSAStartup(mkword, &version);
if (what != 0){
std::cout << "This version is not supported! - \n" << WSAGetLastError() << std::endl;
}
else{
std::cout << "Good - Everything fine!\n" << std::endl;
}
SOCKET u_sock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
if (u_sock == INVALID_SOCKET)
std::cout << "Creating socket fail\n";
else
std::cout << "It was okay to create the socket\n";
//Socket address information
sockaddr_in addr;
addr.sin_family = AF_INET;
addr.sin_addr.s_addr = inet_addr("10.3.34.131");
addr.sin_port = htons(80);
/*==========Addressing finished==========*/
//Now we connect
int conn = connect(u_sock, (SOCKADDR*)&addr, sizeof(addr));
if (conn == SOCKET_ERROR){
std::cout << "Error - when connecting " << WSAGetLastError() << std::endl;
closesocket(u_sock);
WSACleanup();
}
//Send some message to remote host
char* mymsg = "success";
char vect[512] = { 0 };
int smsg = send(u_sock, mymsg, strlen(mymsg), 0);
if (smsg == SOCKET_ERROR){
std::cout << "Error: " << WSAGetLastError() << std::endl;
WSACleanup();
}
int get = recv(u_sock, vect, 512, 0);
if (get == SOCKET_ERROR){
std::cout << "Error in Receiving: " << WSAGetLastError() << std::endl;
}
std::cout << vect << std::endl;
closesocket(u_sock);
_getch();
return 0;
}
This is the error:
How can I correct this error?

Answer 1

Your network has no machine with IP address 10.3.34.131 that is listening on port 80. Or, if it does, that machine is rejecting your machine's connections to it.