Maintaining an ASP session with Php+curl

[Kylotan]

I need to use a PHP site as if it was a web browser accessing an ASP site that uses session variables. This involves passing an ASP session cookie back and forth, but my initial attempts have failed.

I can save the appropriate cookie using curl_setopt($ch, CURLOPT_COOKIEJAR, $cookieFilename) but it doesn't appear to be sending it when I specify curl_setopt($ch, CURLOPT_COOKIEFILE, $cookieFilename) on a subsequent page. It's hard for me to verify which cookies are being sent in the header as I'm not in control of the server.

Anybody got any code that is known to work for this?

[Kylotan]

In further experimentation, the system works with CURL directly when I do this:

curl -c cookies.txt [url]http://login_url...[/url]
curl -b cookies.txt [url]http://another_url...[/url]

Yet doesn't seem to work like this:

$ch = curl_init("http://login_url...");
curl_setopt($ch, CURLOPT_COOKIEJAR, "cookies.txt");
$result = curl_exec($ch);

$ch = curl_init("http://another_url..");
curl_setopt($ch, CURLOPT_COOKIEFILE, "cookies.txt");
$result = curl_exec ($ch);

But all the documentation implies that this is a direct parallel.

Any hints welcomed.

[Kylotan]

Just in case anyone brings this post up in a search, it was a problem with reading the cookie file rather than with PHP or Curl.