title: How to get IP Address of client machine when a session is started by using Angular 4
body: <p>I am working in a Angular 4 project. In this I need to get the IP address of a client when the session is started.</p>
  
  <p>Before that how can I achieve the session concept in Angular 4? I have referred lot of pages but nothing has helped me so far. Please help me to solve these all. I am not asking write code to anyone at least I want the clear idea about this.</p>