Apache Sending "Content-Length : 0" , How to Fix?

Question

I am using Apache server and it is sending Content-Length = 0 value which is preventing file-downloads, see - http://www.youtubedroid.com/download2.php?v=_3XcMEKNws0&title=Akhila+%2CMumbai+reloaded%2CSuper+dancer+2&hq=0 , here are my .htaccess content :

SetEnv no-gzip dont-vary

Here are headers sent by the server :

HTTP/1.1 200 OK
Date: Tue, 15 Dec 2009 06:12:11 GMT
Server: Apache/2.2.14 (Unix) mod_ssl/2.2.14 OpenSSL/0.9.8e-fips-rhel5 mod_bwlimited/1.4
X-Powered-By: PHP/5.2.11
Content-Description: File Transfer
Content-Disposition: attachment; filename="Akhila ,Mumbai reloaded,Super dancer 2.mp3"
Content-Transfer-Encoding: binary
Expires: 0
Cache-Control: must-revalidate, post-check=0, pre-check=0
Pragma: public
X-Sendfile: ./tmp/64eb3b185e38af95c15405ffb0606e76.mp3
Content-Length: 0
Keep-Alive: timeout=5, max=95
Connection: Keep-Alive
Content-Type: application/octet-stream

Pls. tell how to fix this ?

Solution

X-Sendfile header won't be sent by apache, so probably you haven't enabled xsendfile in that virtual host. When XSendFile is enabled, apache will be remove X-SendFile header and will sent the file.

Comments

[Vineet Kasat]

Please phrase your question in the form of a question.

[Admin]

Michael - I hope it's better now :)

[Vineet Kasat]

My guess is that this is a programming issue. The download2.php script is responsible for setting the length and such. I see you are using sendfile() or its like, which, so long as it can read the file, should "just work."

[PP.]

I would suspect your script is outputting nothing. Triple check your PHP script.