Unity Server side receipt validation

Hey @MaximillianChronoscope! Using the .purchasePackage or .restoreTransactions functions in the SDK will automatically validate the device receipt. There isn’t a standalone receipt validation endpoint in the SDK, it’s  a little more abstracted then that so the whole purchase process is handled by RevenueCat. 

This is what the code looks like on my client when a player makes a purchase.

        Purchases purchases = GetComponent<Purchases>();
        purchases.PurchaseProduct(productID, (productIdentifier, purchaserInfo, userCancelled, error) =>
        {
            if (!userCancelled)
            {
                if (error != null)
                {
                    LogError(error);
                }
                else
                {

                    //On successful purchase, how do i get a token or transactionID on the client                      so i can send to my server, so my server can request that same event data                          from revanueCat using aforementioned ID / token

                    purchases.SyncPurchases();
                }
            }
            else
            {
                Debug.Log("Subtester: User cancelled, don't show an error");
            }
        });

I’ll have 10+ servers running, with users able to connect to any one each time they login to my app (game). So i can’t just send the information to one location, i need each server to request to receive this information. Can i get more support than a webpage link? How can the client send some sort of idintifying information to my server so that my game server knows which transaction to look for in order to verify it?

I’ve looked through the 13 API functions on that page, and none of them seem to do what I’m looking for.

Hey @MaximillianChronoscope ,

I don’t think there is a way for your servers to request specific transaction IDs. RevenueCat handles all of the receipt validation on our end and we use an entitlement system to unlock access as shown in our documentation here: https://docs.revenuecat.com/docs/entitlements. 

We don’t offer live support , but can you describe the full use-case in which you are trying to account for? I can then see if there is a workaround with RevenueCat that can support your needs  .

I was able to successfully get the information i needed into my game using “Get Subscribers” thank you for your assistance! Look forward to using your company’s services!

[Server]
public IEnumerator ReceiptValidator(string _offer, string _receipt)
{

    yield return new WaitForSeconds(3); //give some time for revenuecat to get copy of receipt

    WWWForm form = new WWWForm();
    form.AddField("UserID", this.name);
    string url = "http://x.xxx.xxx.xxx/receiptvalidatorscriptname.php";

    using (UnityWebRequest webRequest = UnityWebRequest.Post(url, form))
    {
        yield return webRequest.SendWebRequest();

        if (webRequest.result == UnityWebRequest.Result.ConnectionError || webRequest.result == UnityWebRequest.Result.ProtocolError)
        {
            Debug.LogError("Post Web Request Error: " + webRequest.error);
        }
        else
        {
            if (!string.IsNullOrEmpty(webRequest.downloadHandler.text))
            {
                Hashtable hash = ImportJsonString(webRequest.downloadHandler.text);
                //compare receipt to your purchase records and grant rewards
            }
        }
    }

}

<?php

// Enable error reporting
ini_set('display_errors', 1);
ini_set('display_startup_errors', 1);
error_reporting(E_ALL);

// Check if UserID is set in the POST request
if (!isset($_POST["UserID"])) {
    die("UserID not provided");
}

$UserID = $_POST["UserID"];

$curl = curl_init();

curl_setopt_array($curl, [
    CURLOPT_URL => "https://api.revenuecat.com/v1/subscribers/$UserID",
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_ENCODING => "",
    CURLOPT_MAXREDIRS => 10,
    CURLOPT_TIMEOUT => 30,
    CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
    CURLOPT_CUSTOMREQUEST => "GET",
    CURLOPT_HTTPHEADER => [
        "Accept: application/json",
        // Consider storing this in an environment variable for better security
        "Authorization: YourAuthorizationCodeHere",
        "Content-Type: application/json"
    ],
]);

$response = curl_exec($curl);

// Check for cURL errors
$err = curl_error($curl);

// Check for HTTP status code
$http_code = curl_getinfo($curl, CURLINFO_HTTP_CODE);

curl_close($curl);

if ($err) {
    echo "cURL Error #:" . $err;
} elseif ($http_code != 200) {
    echo "HTTP Response Code: " . $http_code;
} else {
    echo $response;
}

@bayramali This is the server code and the PHP receipt validator script i call to get the infromation from revenue cat, from there you parse the hash to get the users and their purchases out, you use custom in game logic to verify their receipts vs your purchases