"Headers or JSON POST missing tonce, corrupt or incomplete"

[peterhuynh]

I'm two months into learning php - my first programming language. I'm thankful for all the support I've received from this board.

 

This script is supposed to retrieve a balance from a bitcoin exchange. (Note: it is a dummy account, so no money actually in it.)

 

Here is the script:

<?php
date_default_timezone_set("EST");

$nonce 		= date("Y-m-d H:i:s e"); 
$secret 	= 'banana';
$public 	= 'aGjnonYmA3gEQv6JzgEwcyR7cpa3ARxMlTUweXBer3xM';
$private 	= '2D0ndrWpzWasfDNIWfvKNizeE2cxmqJhQf31ubf0boyd';
$data = array(
	"t"		=> $nonce,
	"secret"	=> $secret
);

$hash = hash_hmac('sha256', json_encode($data), $private);

$headers = array(
	'Accept: application/json',
	'X-Auth: '. $public,
	'X-Auth-Hash: '. $hash
);

$header_data = json_encode($headers);
$ch = curl_init('https://sandbox.cointrader.net/api4/account/balance');
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "POST");
curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($data));
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, array(
	'Content-Type: application/json',
	'Content-Length: ' . strlen($header_data))
	);
$result = curl_exec($ch);
curl_close($ch);
var_dump($result);
?>

The POST parameters are "time" and "secret". Time is supposed to be formatted a certain way, which I've done, and the secret is the word 'banana'.

 

The exchange provides me with this message:

string(205) "{"success":false,"message":"Unauthorized","data":{"errorCode":"401","message":"Headers or JSON POST missing tonce, corrupt or incomplete. Data: {\"t\":\"2015-03-04 22:33:57 EST\",\"secret\":\"banana\"}"}} "

[CroNiX]

I don't think the postfields is supposed to be a json string. It should be a querystring

 

Try

curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($data, '', '&'));

[peterhuynh]

  On 3/6/2015 at 12:26 AM, CroNiX said:

 

I don't think the postfields is supposed to be a json string. It should be a querystring

 

Try

curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($data, '', '&'));

 

Authentication

Authentication is accomplished with a private/public key combination that utilizes HMAC-SHA256. Parameter names AND values (total quantity, price, etc.) are passed as strings in JSON format in POST body of the request. To use the API users must first generate a key pair in the User Profile API section of the site. Multiple keypair combinations can be generated per account.

NOTE:

• All POST parameters in JSON (payload) must be sent in string format (quoted).

• All connections must be be transmitted over HTTPS/SSL.

[peterhuynh]

I FIGURED IT OUT!!!