quickblox 500 Internal error REST API call - quickblox

Question

We want to create Quickblox user through our WEB-Java application.
To get the same working we are trying to first make the REST API calls through Postman and CURL and then proceed to Java Code.
However, we are getting 500 internal error
URL
https://api.quickblox.com/session.json
Header
Content-Type: application/json"
QuickBlox-REST-API-Version: 0.1.0
body
{"application_id": “35221”, "auth_key": "wU8JrJ-DKamUB8v", "timestamp": “1456378718”, "nonce": “1112”, "signature": "81f3967265c87de025010eb9298d169555085e91”}
To generate the signature
application_id=35221&auth_key=wU8JrJ-DKamUB8v&nonce=1112&timestamp=1456378718
Here is the response we are getting `Connection → keep-alive
Content-Length → 948
Content-Type → text/html; charset=utf-8
Date → Thu, 25 Feb 2016 05:48:08 GMT
Server → nginx/1.8.0
Status → 500 Internal Server Error
X-Rack-Cache → invalidate, pass
X-Request-Id → 3a47c3daaf9ad353a5b592459c6f3345
X-Runtime → 0.003346`
As to my understanding the parameters are as suggested in the API docs. Please help as we are bit stuck at it and are not able to move forward.
Also posting a curl equivalent that results in same error
curl -X POST \
-H "Content-Type: application/json" \
-H "QuickBlox-REST-API-Version: 0.1.0” \
-d '{"application_id": “35221”, "auth_key": "wU8JrJ-DKamUB8v", "timestamp": “1456378718”, "nonce": “1112”, "signature": "81f3967265c87de025010eb9298d169555085e91”}’ \
https://api.quickblox.com/session.json
application_id=35221&auth_key=wU8JrJ-DKamUB8v&nonce=1112&timestamp=1456378718
authorisation secret - FEu2AN8CfgU7VF4
thanks,
aakash

Answer 1

First define all the related to the application:
DEFINE('APPLICATION_ID', 23424);
DEFINE('AUTH_KEY', "dfsadfasdfsadf-");
DEFINE('AUTH_SECRET', "23421342134");
DEFINE('USER_LOGIN', "rahul");
DEFINE('USER_PASSWORD', "fghdf56456456");
// Quickblox endpoints
DEFINE('QB_API_ENDPOINT', "https://api.quickblox.com");
DEFINE('QB_PATH_SESSION', "session.json");
After define, create signature and pass $post_body in curl session api hit, get token and use token in all the webservices php:
$nonce = rand();
$timestamp = time();
$signature_string = "application_id=".APPLICATION_ID."&auth_key=".AUTH_KEY."&nonce=".$nonce."&timestamp=".$timestamp."&user[login]=".USER_LOGIN."&user[password]=".USER_PASSWORD;
$signature = hash_hmac('sha1', $signature_string , AUTH_SECRET);
$post_body = http_build_query(array(
'application_id' => APPLICATION_ID,
'auth_key' => AUTH_KEY,
'timestamp' => $timestamp,
'nonce' => $nonce,
'signature' => $signature,
'user[login]' => USER_LOGIN,
'user[password]' => USER_PASSWORD
));