http-stats:
HTTP/1.1 Content_Length header field

The Content_Length field is NOT a standard HTTP header field and may not be supported by all clients.

This field is just an incorrect spelling of the standard field Content-Length. (Using the "_" character instead of "-")
This spelling is not supported by any know client.


Common Content_Length header values:

Sample Content_Length web server response:

HTTP/1.1 200 OK
Content-Type: text/html; charset=UTF-8
Content-Length: 925
Content_Length: 0
Date: Fri, 30 Jul 2010 17:04:47 +0000

<!DOCTYPE html PUBLIC "-//W3C//DTD ...
...
...

Other common HTTP headers

Other less common headers