undefined reference to constructor

Kode 

slot@debian:~/Programmering/C++/Socket$ g++ test.cpp 
/tmp/ccgv3IIE.o(.text+0x7e): In function `main':
: undefined reference to `socket::socket[in-charge](std::basic_string<char, std::char_traits<char>, std::allocator<char> >, int, std::basic_string<char, std::char_traits<char>, std::allocator<char> >)'
/tmp/ccgv3IIE.o(.text+0x11b): In function `main':
: undefined reference to `socket::bind()'
collect2: ld returnerede afslutningskoden 1

Kode 

#ifndef socketHeader
#define socketHeader

#include "job.h"

class socket
{
 public:
  socket(string ip, int port, string familiy);
  ~socket(){}
  bool bind();
  bool connect();
  bool close();
  string read();
  void write(string s);

};

#endif

Kode 

#include "socket.h"


socket::socket(string ip, int port, string familiy)
{

  cout << "socket constructor"<<endl;
}

bool socket::bind()
{
  cout << "socket bind"<<endl;
  return true;
};


bool socket::close()
{
  cout << "socket close"<<endl;
  return true;
}

bool socket::connect()
{
  cout <<" socket connect" << endl;
  return true;
}

string socket::read()
{
  cout << "socket read"<<endl;
  return "HEJ";
}

void socket::write(string s)
{
  cout<<"socket write"<<endl;
}

Kode 

#include <iostream>
#include <string>
using namespace std;

#include "socket.h"

int main()
{

  socket t("hej",50,"hej");
  t.bind();

  return 0;
}