two servers for one upload center

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The time now is Sun Oct 12, 2008 7:55 am

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two servers for one upload center

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mehdiali
Trainee Developer

Joined: 30 Dec 2007
Posts: 15
Location: Tehran

564 Cash

two servers for one upload center

Hi every one
there is a upload center that it's files are divided between two servers.
one of the servers is located in Washington and other one is located
in New York.
so some files will be downloaded from Washington server and other files will be downloaded from New York server.
and i want to use one domain for both of them.
for example :
www.mehdiali/files/a.exe (it is downloaded from Washington server)
www.mehdiali/files/b.exe (it is downloaded from New York server)

what is your idea about using .htaccess(it is a file that locates in folder in apache and you can write some commands and according the commands apache do something)
or
is there any tools in operating systems that if there isn't requseted file in
one of them send a message(request) to another operating system and get it.
thank you in advance.

Sun Dec 30, 2007 3:51 am

muthukumar_se@hotmail.com
Junior Developer

Joined: 27 Dec 2007
Posts: 37
Location: Fiji Island
1113 Cash

Re: two servers for one upload center

Hi

use this in your .htaccess

---------Start----------
# to make exe force to download
AddType application/octet-stream .exe

#redirect your request to paticular server
Redirect 301 /files/a.exe http://Washingtonserver-path/a.exe
Redirect 301 /files/b.exe http://NeWYorkserver-path/b.exe
-----------End---------

place the .htaccess file your both server

_________________
Thanks,
Muthukumar Selvarasu,
Project Manager,
Webmasters Ltd.

Sun Dec 30, 2007 3:14 pm

mehdiali
Trainee Developer

Joined: 30 Dec 2007
Posts: 15
Location: Tehran

564 Cash

thank you for your replies,
the solution :
the user type mehdiali/files/b.exe(requested_url) that isn't available in server A.
so i must redirect it to server B.
i write a command like this in htaccess file :

ErrorDocument 404 "http://localhost/divider.php?[COLOR="Red"]r_u=requested_url[/COLOR]"

so in divider.php page i have $HTTP_GET_VARS['r_u']
and after fetching the b.exe(file name)
i'll redirect it to server B, like this :
header("location:mehdiali2/filename/b.exe");

but my problem is how i can find requested_url.
what do you write instead of requested_url in
ErrorDocument 404 "http://localhost/divider.php?[COLOR="Red"]r_u=requested_url[/COLOR]"
is there any variable?

i don't know the name of the files.
please send the complete code.

Tue Jan 01, 2008 5:37 am

hba
nOObee

Joined: 02 Jan 2008
Posts: 1
Location: tehran

30 Cash

hi
thank mehdi :d

for this question cant use dynamic programming like php

only use htaccess or server

i use this code in htaccess to redirect with all request url

Code:

ewriteEngine On
RewriteRule upload/(.*)$ http://server2.com/upload/$1 [L]

but i think we can use this code when 404 error return
ErrorDocument 404

Wed Jan 02, 2008 2:58 am

mehdiali
Trainee Developer

Joined: 30 Dec 2007
Posts: 15
Location: Tehran

564 Cash

thank you my friend
and this is my solution:
------------------------
the code redirects http://A/files/b.exe to http://B/files/b.exe if b.exe
is not in server A
type this code in your htaccess file :

ErrorDocument 404
"<html><body>
<script language =javascript>
url= window.location;<!--current URL
url = url+'';<!--convert it's type to string
slash_location=0;
<!--this while is using for extracting the file name
<!--i mean : http://A/files/b.exe that isn't in server A
while(slash_location!=-1)
{
end_slash_location= url.search('/');
url=url.substring(end_slash_location+1,url.length);
slash_location=url.search('/');
}
<!--here value of URL is b.exe
window.location='http://B/files/'+url; <!--redirect it to server B
</script>
</body></html>"

Note:
1.ErrorDocument 404 command:
ErrorDocument 404 is a event that arise when "Page can't be displayed"
and then the command is executed.
2.all of the mentioned code must be in one line.
3.ErrorDocument 404 " you can't use double quotation in this area ".
4.the script must locate just in one of the servers(in this case in server A).

Thu Jan 03, 2008 12:40 am

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