Php – Allow only one request per ip and url

apache-2.2httpPHP

Using a htaccess file or sending special headers from php, is there any way to allow only one http request by ip and url? I mean, an user could make multiple request simultaneously, but not to the same url (file).

The issue comes with the download accelerators. I need to allow multiple dowloads at the same time and also pause and/or resume them (bc of failures in the client's connection, mainly), but disable that annoying function of having multiple partial downloads at the same time because they are making the server crash because of the amount of simultaneously requests.

Best Answer

The server should not crash because of the amount of simultaneous requests. If you are using Apache (as per question tags) try lowering (even dramatically) MaxClients and MinSpareServers or MinSpareThreads. Or also, try out nginx.

Related Solutions

Vanity URL manager for Apache Web Server

I don't know what exactly defines a "maintenance nightmare" in your book, but you could try to go with a dynamic rewriting map in apache:

RewriteEngine on
RewriteMap    vanity-map       prg:/path/to/vanity.pl
RewriteRule   ^/(.*)/(.*)$  /${vanity-map:$1}/$2

vanity.pl could could be a simple perl script (don't forget to set $| = 1;) which gets the first part of the request URL (as outlined above) on STDIN and is supposed to rewrite that - e.g. by querying a database.

Now, that just leaves the frontend. I'm an inexperienced Ruby on Rails programmer (it's just a spare time activity), but I think, if it doesn't need to look pretty, even I could write an application that authenticates a user, lets him create a rewriting and shows that up for approval to some IT guys/$WHATEVER in much less than a week, so I don't think any real programmer would have a problem doing that in a few hours. Depending on the database, there might even be frontends readily available which will do the job with only a little customization (php*admin comes to my mind).

This way, you get all the flexibility of a database approach paired with a central source for all redirections. As long as the database's index on the URL part fits in your servers memory, you won't even have to worry about performance.

Php – getting a 403 error on a POST to a PHP script

How big is your crash dump? PHP has memory limits that may need to be tweaked so your script can work. The memory limit will have to be large enough for the execution of the script + any uploaded data to fit.

Best Answer

Related Solutions

Vanity URL manager for Apache Web Server

Php – getting a 403 error on a POST to a PHP script

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