file upload, Content-Type problem

Hi,

I'm trying to simulate an HTML upload form in order to send a request to
a REST service, and I'm facing a problem with the body content of the
request.

I have to send an XML file to the service. After having tried a lot of
things in my PHP code, I tried to send the XML file by using the 'curl'
client in a Linux terminal and succeeded. This allowed me to inspect the
data that are sent by sniffing my network, and I found a difference that
seems to be the problem.

***********************************************************************************

With the command line, in order to make it work, I had to use the -F
option, with the name of the file + the type of the file:

curl -F file="@content.xml;type=text/xml"
"http://www.my-rest-service.com"


(...)
Content-Type: multipart/form-data;
boundary=----------------------------ea2a22a059af
(...)
----------------------------ea2a22a059af
Content-Disposition: form-data; name="file"; filename="content.xml"
Content-Type: text/xml

<?xml version="1.0" encoding="UTF-8"?>
(...)
----------------------------ea2a22a059af

***********************************************************************************
But with the following PHP code:

$post_data = array('file' => '@/tmp/content.xml');
curl_setopt($curl, CURLOPT_POST, 1);
curl_setopt($curl, CURLOPT_POSTFIELDS, $post_data);

(...)
Content-Type: multipart/form-data;
boundary=----------------------------d795ec2deb5c
(...)
------------------------------d795ec2deb5c
Content-Disposition: form-data; name="file"; filename="content.xml"
Content-Type: application/octet-stream

<?xml version="1.0" encoding="UTF-8"?>
(...)
------------------------------d795ec2deb5c

***********************************************************************************

As you can see, the value of the Content-Type is different

curl client from a terminal :
------------------------------------
Content-Type: text/xml

CURL-PHP : 
--------------
Content-Type: application/octet-stream

Is there a way to set the value of this Content-Type with CURL-PHP ?

Thanks a lot,
Nicolas

--------------------------------------
Nicolas Rod

Université de Genève - DINF/NTICE
Uni-Dufour, bureau 335
Rue Général-Dufour 24
1204 Genève

Tel. +41 22 379 11 19
--------------------------------------

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