Bad HTTP "Content-Type" header

[heisenberg41]

Hello,

I am writing a simple app that creates some folders when we add a new client to our systems.

I keep getting an error:

Error in call to API function "files/create_folder_batch": Bad HTTP "Content-Type" header: "application/json; boundary=------------------------0e03e86aa71fa792". Expecting one of "application/json", "application/json; charset=utf-8", "text/plain; charset=dropbox-cors-hack".

Here is the code that I am using:

function create_folders() {
	$ch = curl_init();
	$folders = array(
	    "/B - Client Folders/" . $folder_name, 
	    "/B - Client Folders/" . $folder_name . "/Logo", 
	    "/B - Client Folders/" . $folder_name . "/Photos", 
	    "/B - Client Folders/" . $folder_name . "/Graphics"
	    );

	$params = array(
	    $folders, 
	    '"autorename":false', 
	    '"force_async":false');

	curl_setopt($ch, CURLOPT_URL, 'https://api.dropboxapi.com/2/files/create_folder_batch');
	curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
	curl_setopt($ch, CURLOPT_POST, 1);
	curl_setopt($ch, CURLOPT_POSTFIELDS, $params);
	
	curl_setopt($ch, CURLOPT_HTTPHEADER, array(
	    'Authorization: Bearer <key>',
	    'Dropbox-Api-Path-Root: {".tag": "namespace_id", "namespace_id": "<nsid>"}',
	    'Content-Type: application/json'));

	$result = curl_exec($ch);
	if (curl_errno($ch)) {
		echo 'Error:' . curl_error($ch);
	} else {echo $result;}
	curl_close($ch);
}

I don't understand why "; boundary=------------------------0e03e86aa71fa792" is being added to "application/json".

Thanks for your help in advance.

[Greg-DB]

It looks like you're just passing along a native object as the API call parameters, and curl is then applying the multi-part Content-Type. You should send up the parameters as JSON.

You can build your parameters as JSON like:

$params = json_encode(array(
    'paths'=> $folders,
    'autorename'=> false,
    'force_async'=> false));

[heisenberg41]

Thank you Greg! That worked.  

Biggest noob question of all.  How did you know it had to be JSON encoded?

[Greg-DB]

Great, thanks for confirming that.

All Dropbox API v2 endpoints (except OAuth endpoints) expect the parameters as JSON, though there are some different ways of sending them. You can find information about each one in the documentation. For example, the /2/files/create_folder_batch endpoint uses the "RPC" format, so it expects "JSON in the request body and return results as JSON in the response body".

[eranga119]

Error in call to API function "sharing/create_shared_link_with_settings": Bad HTTP "Content-Type" header: "application/json{\"path\":\"\\/1uawro.jpg\",\"settings\":{\"requested_visibility\":\"public\",\"audience\":\"public\",\"access\":\"viewer\"}}". Expecting one of "application/json", "application/json; charset=utf-8", "text/plain; charset=dropbox-cors-hack".

$share_link = array("path"=> $path, "settings"=> array("requested_visibility"=> "public", "audience"=> "public", "access"=> "viewer"));
$share_link_url = "https://api.dropboxapi.com/2/sharing/create_shared_link_with_settings";
$headers = array('Authorization: Bearer '. $token,
'Content-Type: application/json'.
json_encode($share_link)
);

i was encoded but not work for me.plz advice

[Здравко]

Hi @eranga119,

Why are you passing the body part (in your post: $share_link) in header part? The particular error message denote the sticking the body to the "Content-Type" header, which is NOT correct of course. 😉

Hope this helps.

[Greg-DB]

@eranga119 This error message indicates that instead of just sending the expected "application/json" value in your "Content-Type" header, you're instead sending that plus the JSON string for the API call parameters, as Здравко said. That JSON should be sent in the request body, not a header.

The code you shared does seem to show you are incorrectly appending those parameters to your "Content-Type" header value, so you should fix your code to put that in the request body instead.

[eranga119]

@greg-DB thank you for quick responce.i was fix my code and it's work perfectly now. you are abslutly correct.