Thanks to Tedd, Barry, George and others for help over "download file" problem. I'm going to receive an ACK if the file downloads correctly. In absence of such an ACK, a script would quitely remove the temporary files after a fixed interval of time. Temporary files have unique filenames. New problem: Is there a way for the server to notify the client that a new file has become available for download, provided the client was online in the past X minutes? This could be done if 1. The client queries the server after a set interval of time. I DO NOT WANT THIS FOR SOME SILLY REASON. 2. The connection is kept alive (?). With my current knowledge of PHP, I am not able to manage this. Cookies or sessions? Can't find a related example directly dealing with this issue. All wild ideas/links/examples are welcome. What changes would be required in Apache conf file (if any)? Thanks & Regards KM On 6/7/06, tedd <tedd@xxxxxxxxxxxx> wrote:
At 8:42 AM +0000 6/7/06, kartikay malhotra wrote: >Dear All, > >I have a HTTP server + MySQL database. Everytime a file is requested for >download, my PHP script loads the content from the database into a temporary >file (on the server). I then pass a URL to the client, with a link to this >file. The client can thus download the file at any time. > >However, I can foresee many problems with this approach. One is, when to >delete the temporary file? Also with more than one client, this approach >would have to be refined. Security is also an issue: One user may read >another's files. > >Can anyone kindly give me an alternative approach? > >I reiterate, I cannot supply static URLs as the downloadable file is >generated on-demand. > >Thanks & Regards >KM KM: Thinking off the top of my head (not always the best for me) -- why not give the user a static url AND a key? The static url would have a php program sitting there waiting for a user to come along and provide the correct key. After which, your program would then create the file (in a random named folder); provide the user with a link; and clean-up after he's done. That way you have the control over what's happening. The key approach handles security and when to clean-up. hth's tedd -- ------------------------------------------------------------------------------------ http://sperling.com http://ancientstones.com http://earthstones.com -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
