I am using
wp-config.php so everytime I upload a new image and inserted into the post, it is using SSL version
<img src="https://www.example.com/wp-content/uploads/2013/01/test.png" ..
My blog is using HTTP in the public side, so how to make the upload path as rotocol independent, e.g.
<img src="//www.example.com/wp-content/uploads/2013/01/test.png" ..