title: Send sync message from IpcMain to IpcRenderer - Electron
body: <p>In <a href="https://github.com/electron/electron" rel="noreferrer">electron</a>, It is possible to send sync message from IpcRenderer to IpcMain via <code>ipcRenderer.sendSync('synchronous-message', 'ping')</code>.    </p>
  
  <p>Also possible to send <strong>async</strong> message from IpcMain to IpcRenderer using <code>window.webContents.send('ping', 'whoooooooh!')</code>  </p>
  
  <p>but is there any way to send <strong>sync</strong> message from IpcMain to IpcRenderer?</p>