CID Embedded Images (Inline Images)

[Vikas Batra]

Would anyone please share the code to embed images using CID technique?

I have tried following code but no luck.

 mail = Mail.new do
  from     recipient
  to       recipient
  subject  'Here is thdddfdfe image you wanted'
  html_part do
     content_type 'text/html; charset=UTF-8'
      body '<img src="cid:sdwewewe122332mmdd" />sddddfff'
   end
 add_file :filename => 'somefile.png', :cid => 'sdwewewe122332mmdd', :content => open('http://www.wwm.com/assets/contactimage.jpg').read
 end