I want to get path info that from which URL user came to sign in to our page as to redirect back after successful sign in but there is problem how can I check that this URL is related to our website URL or not.
Is there any technique to check that if the user came from www.myDomain.com/* then redirect him back else forward homepage
When you get to the sign-in screen you can try the Referer header (that's right Referer, not Referrer):
It isn't always set, but if it is it should point to the last page the user was at before getting sent to the sign in form. Then you can either store the value in the user's session or add it as a hidden field to the sign in form.
The remote host header gives information about the client (IP address or host name) not the URL to the last page before the sign-in.
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