PHP File delivery of KML file not accepted by google maps

[WiredHome]

I have some KML files with client information in them, and want to make them accessible only by logged on users - then delivering them to google maps. So, the KML files are in a secure folder and as you'll see below I use readfile to send them out. Through various web browsers, I can open the link (google earth is configured, starts, and works great), giving that same link to google maps fails with a file not found error.

 

The minimalist [unsecured] version for debugging this "f.php" script -

<?php

$t = "test.kml";

header("Content-Type: application/vnd.google-earth.kml+xml");

header("Content-Length: " . filesize($t));

readfile($t);

?>

 

this allows a: http://www.mysite.com/f.php and b: http://www.mysite.com/test.kml

dropping a into http://maps.google.com/ fails and

dropping b into http://maps.google.com/ works fine.

 

I've read and worked it from a "header" perspective and am very sure I'm not introducing characters ahead of the header. I can in fact download the file just fine (saving or launching into Google Earth), but google maps is not accepting it.

 

The PHP script

Header from the PHP delivered version:

==============

HTTP/1.1 200 OK

Server: Microsoft-IIS/5.0

Date: Sat, 23 Jan 2010 15:55:18 GMT

X-Powered-By: ASP.NET

X-Powered-By: PHP/5.2.11

Content-Type: application/vnd.google-earth.kml+xml

Content-Length: 390080

 

<?xml version="1.0" encoding="UTF-8"?>

... the rest of the file streams from here ...

==============

 

and direct from the IIS delivered version it looks like this:

==============

HTTP/1.1 200 OK

Server: Microsoft-IIS/5.0

X-Powered-By: ASP.NET

Date: Sat, 23 Jan 2010 15:56:53 GMT

Content-Type: application/vnd.google-earth.kml+xml

Accept-Ranges: bytes

Last-Modified: Mon, 18 Jan 2010 20:57:57 GMT

ETag: "104b82e98098ca1:dd1"

Content-Length: 390080

 

<?xml version="1.0" encoding="UTF-8"?>

==============

 

I've tried various modifications to the headers, within the constraints of PHP control, but have been unsuccessful. For example, adding -

header("Accept-Ranges: bytes");

header("Last-Modified: Mon, 18 Jan 2010 20:57:57 GMT");

 

results in

==============

HTTP/1.1 200 OK

Server: Microsoft-IIS/5.0

Date: Sat, 23 Jan 2010 16:03:47 GMT

X-Powered-By: ASP.NET

X-Powered-By: PHP/5.2.11

Accept-Ranges: bytes

Last-Modified: Mon, 18 Jan 2010 20:57:57 GMT

Content-Type: application/vnd.google-earth.kml+xml

Content-Length: 390080

 

<?xml version="1.0" encoding="UTF-8"?>

==============

 

I've looked at timing aspects, and the server response to either query is within a fraction of a second - the php being about 1/4 second slower.

 

An easy recommendation might be to post this into a google maps forum too, and I'm seeking out the right one to do so.