Laravel Dropbox API v2 - 上传时为空文件

Question

What I have till now

Right now I have a working oauth2 authentication between a laravel user and the dropbox API. Every user can upload files to their personal folder.

The Problem

After Uploading a file with laravel with the Dropbox API v2 I can see that there is a empty (0 Bytes) file uploaded.

Used to accomplish this task:

• Laravel
• Guzzle
• Dropbox API Library

What am I missing?

The Code

My function for processing a form looks like this:

$formFile = $request->file('fileToUpload');
$path = $formFile->getClientOriginalName();
$file = $formFile->getPathName();
$result = Dropbox::files()->upload($path, $file);
return redirect('dropboxfiles');

And my files->upload function in my Dropbox Library looks like this:

$client = new Client;

   $response = $client->post("https://content.dropboxapi.com/2/files/upload", [
      'headers' => [
         'Authorization' => 'Bearer '.$this->getAccessToken(),
         'Content-Type' => 'application/octet-stream',
         'Dropbox-API-Arg' => json_encode([
            'path' => $path,
            'mode' => 'add',
            'autorename' => true,
            'mute' => true,
            'strict_conflict' => false
          ])
       ],
       'data-binary' => '@'.$file
   ]);

The file, as I said, gets uploaded successfully. Correct name, but 0 Bytes. So empty file.

Thank you so much in advance for your help!

Update

With the following code I made it work. My question is though if there is a better "Laravel-Like" Solution instead of using fopen ?

$response = $client->post("https://content.dropboxapi.com/2/files/upload", [
            'headers' => [
                'Authorization' => 'Bearer '.$this->getAccessToken(),
                'Dropbox-API-Arg' => json_encode([
                    'path' => $path,
                    'mode' => 'add',
                    'autorename' => true,
                    'mute' => true,
                    'strict_conflict' => false
                ]),
                'Content-Type' => 'application/octet-stream',
            ],
            'body' => fopen($file, "r"),
        ]);

Answer 1

How @Greg mentioned ( see cross-linking reference) I was able to solve this issue by using

'body' => fopen($file, "r"),

instead of

'data-binary' => '@'.$file

This is, how Greg mentioned, because data-binary is used in Curl requests. Other HTTP Clients, like Guzzle in my case use different names.