Image upload not working in Linkedin V2 API

Question

I'm now working with Linkedin V2 integration with my application. I'm facing an issue while trying to upload image to Linkedin.

I have tried CURL request from my terminal(I'm using Ubuntu OS) & getting response as below:

Terminal command (Working & file uploaded):

curl -i --upload-file /Users/peter/Desktop/superneatimage.png --header "Authorization: Bearer redacted" 'https://api.linkedin.com/mediaUpload/C5522AQGTYER3k3ByHQ/feedshare-uploadedImage/0?ca=vector_feedshare&cn=uploads&m=AQJbrN86Zm265gAAAWemyz2pxPSgONtBiZdchrgG872QltnfYjnMdb2j3A&app=1953784&sync=0&v=beta&ut=2H-IhpbfXrRow1'

It's response as below:

HTTP/2 201 date: Wed Apr 10 09:14:44 UTC 2019 server: Play set-cookie: lang=v=2&lang=en-us; Path=/; Domain=api.linkedin.com x-ambry-creation-time: Wed Apr 10 09:14:44 UTC 2019 access-control-allow-origin: https://www.linkedin.com content-length: 0

I'm facing issue when I integrate the CURL request in my application. My CURL request code from my application is given below.

$headers = array();
$headers[] = 'Authorization: Bearer xxxxx';
$headers[] = 'X-Restli-Protocol-Version: 2.0.0';
$headers[] = 'Content-Type: multipart/form-data';
$ch = curl_init();
$options = array(
    CURLOPT_HEADER => true,
    CURLOPT_CUSTOMREQUEST => 'PUT',
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_URL => 'https://api.linkedin.com/mediaUpload/C5522AQGTYER3k3ByHQ/feedshare-uploadedImage/0?ca=vector_feedshare&cn=uploads&m=AQJbrN86Zm265gAAAWemyz2pxPSgONtBiZdchrgG872QltnfYjnMdb2j3A&app=1953784&sync=0&v=beta&ut=2H-IhpbfXrRow1',
    CURLOPT_HTTPHEADER => $headers,
    CURLOPT_FOLLOWLOCATION => true,
    CURLOPT_POST => true,
    CURLOPT_POSTFIELDS => array("upload-file" => '/Users/peter/Desktop/superneatimage.png')
    // CURLOPT_POSTFIELDS => array("upload-file" => new CURLFile('/Users/peter/Desktop/superneatimage.png'))
);
curl_setopt_array($ch, $options);
$response = curl_exec($ch);
print_r($response);
$code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
curl_close($ch);

Response as:

HTTP/1.1 400 Bad Request Server: Play Set-Cookie: lang=v=2&lang=en-us; Path=/; Domain=api.linkedin.com Date: Wed, 10 Apr 2019 09:16:25 GMT Content-Length: 0 X-Li-Fabric: prod-lsg1 Connection: keep-alive

Link to the Linkedin doc

Similar question from SO, which do not solved my issue.

You are not uploading any file, you are sending the file path only. Prefixing the file path with @ was the way to do file uploads, but that is deprecated since PHP 5.5.0, so what you should be using is php.net/manual/en/class.curlfile.php — 04FS
I have used @ before image path as you said but it did not helped me. Used PHP 7 — Sinto

augustine jenin augustine jenin · Accepted Answer · 2019-04-11T09:08:38

Use Guzzle HTTP client instead of curl.I tried curl but it is not working.

First install the composer in the current directory with below command:

php -r "copy('https://getcomposer.org/installer', 'composer-setup.php');"
php -r "if (hash_file('sha384', 'composer-setup.php') === '48e3236262b34d30969dca3c37281b3b4bbe3221bda826ac6a9a62d6444cdb0dcd0615698a5cbe587c3f0fe57a54d8f5') { echo 'Installer verified'; } else { echo 'Installer corrupt'; unlink('composer-setup.php'); } echo PHP_EOL;"
php composer-setup.php
php -r "unlink('composer-setup.php');"

After the composer Update, run below command to install the Guzzle (default version will be 3.9 it requires php >= 5.3.3.You can specify based on your php version):

php composer.phar require guzzlehttp/guzzle

Once Guzzle client installed successfully.Please use the below code to upload the file

    require 'vendor/autoload.php';
    $client =new \GuzzleHttp\Client();
    $image_path='/path_to_your_image/my_image.png';
    $result=$client->request('PUT',$target_url, [
             'headers' => [
                 'Authorization' => 'Bearer ' . $token
              ],
              'body' => fopen($image_path, 'r'),
    
        ]);

You will get below success full response

HTTP/2 201

date: Wed Apr 10 09:14:44 UTC 2019 server: Play set-cookie: lang=v=2&lang=en-us; Path=/; Domain=api.linkedin.com x-ambry-creation-time: Wed Apr 10 09:14:44 UTC 2019 access-control-allow-origin: https://www.linkedin.com content-length: 0

Guzzle is a PHP HTTP client that makes it easy to send HTTP requests and trivial to integrate with web services.

Simple interface for building query strings, POST requests, streaming large uploads, streaming large downloads, using HTTP cookies, uploading JSON data, etc...
Can send both synchronous and asynchronous requests using the same interface. Uses PSR-7 interfaces for requests, responses, and streams. This allows you to utilize other PSR-7 compatible libraries with Guzzle.
Abstracts away the underlying HTTP transport, allowing you to write environment and transport agnostic code; i.e., no hard dependency on cURL, PHP streams, sockets, or non-blocking event loops.
Middleware system allows you to augment and compose client behavior.

Image upload not working in Linkedin V2 API

1 Answers