redirect using htaccess all media in my site into mobile version

Question

How to redirect using htaccess when mobile user acces on my jpg,bmp,gif files on my site

example : i want to redirect mysite.com/media/upload/files.jpg|jpeg|bmp|gif|png into m.mysite.com/media/upload/files.jpg|jpeg|bmp|gif|png

Here is my htaccess

RewriteEngine On
RewriteRule \.(jpg|png|gif|jpeg|bmp)$ - [L]
RewriteCond %{HTTP_USER_AGENT} (mobile|android|blackberry|brew|cldc|docomo|htc|j2me|micromax|lg|midp|mot|motorola|netfront|nokia|obigo|openweb|opera.mini|palm|psp|samsung|sanyo|sch|sonyericsson|symbian|symbos|teleca|up.browser|vodafone|wap|webos|windows.ce) [NC]
RewriteRule ^(.*)$ m.mysite.com [R=302,L]

the problems is, when mobile user straight accessing http:// mysite.com/media/upload/files.jpg it still not redirect into m.mysite.com/media/upload/files.jpg

Answer 1

Assuming that you're checking against the correct user agents, try:

RewriteEngine On

RewriteCond %{HTTP_HOST} !^m\.mysite\.com$ [NC]
RewriteCond %{HTTP_USER_AGENT} (mobile|android|blackberry|brew|cldc|docomo|htc|j2me|micromax|lg|midp|mot|motorola|netfront|nokia|obigo|openweb|opera.mini|palm|psp|samsung|sanyo|sch|sonyericsson|symbian|symbos|teleca|up.browser|vodafone|wap|webos|windows.ce) [NC]
RewriteCond $1 \.(jpg|png|gif|jpeg|bmp)$ [NC]
RewriteRule ^(.*)$ http://m.mysite.com/$1 [R=302,L]