サーバー間のアイテム授受コールバックの実装#

using UnityEngine;
using System.Collections;
using UnityEngine.Advertisements;
 
public class UnityAdsManager : MonoBehaviour
{
    public string gameId;
    public string placement = "rewardedVideo"
 
    public void ShowAd() {
 
        ShowOptions options = new ShowOptions();
 
        // setting the server ID
        options.gamerSid = "your-side-id";
 
        Advertisement.Show(placementID, options);
    }
}

PlayerMetaData playerMetaData = new PlayerMetaData(context);
        playerMetaData.setServerId("example");
        playerMetaData.commit();
 
        UnityAds.show(activity);

id playerMetaData = [[UADSPlayerMetaData alloc] init];
        [playerMetaData setServerId:@"example"];
        [playerMetaData commit];
 
        [UnityAds show:self
          placementId: placementId
   	      showDelegate: showDelegate];

[CALLBACK_URL][SEPARATOR1]sid=[SID][SEPARATOR]oid=[OID][SEPARATOR]hmac=[SIGNATURE]

https://developer.example.com/award.php?productid=1234&sid=1234567890&oid=0987654321&hmac=106ed4300f91145aff6378a355fced73

HTTP/1.1 200 OK
Date: Wed, 22 Feb 2012 23:59:59 GMT
Content-Length: 8
 
1

HTTP/1.1 400 ERROR
Date: Wed, 22 Feb 2012 23:59:59 GMT
Content-Length: 12
 
Duplicate order

// NODE.js S2S callback endpoint sample implementation
// Unity Ads
 
var express = require('express');
var crypto = require('crypto')
var app = express();
 
app.listen(process.env.PORT || 3412);
 
function getHMAC(parameters, secret) {
    var sortedParameterString = sortParams(parameters);
    return crypto.createHmac('md5', secret).update(sortedParameterString).digest('hex');
}
 
function sortParams(parameters) {
    var params = parameters || {};
    return Object.keys(params)
        .filter(key => key !== 'hmac')
        .sort()
        .map(key => params[key] === null ? `${key}=` : `${key}=${params[key]}`)
        .join(',');
}
 
app.get('/', function (req, res) {
 
    var sid = req.query.sid;
    var oid = req.query.oid;
    var hmac = req.query.hmac;
 
    // Save the secret as an environment variable. If none is set, default to xyzKEY
    var secret = process.env.UNITYADSSECRET || 'xyzKEY';
 
    var newHmac = getHMAC(req.query, secret);
 
    if (hmac === newHmac) {
        // Signatures match
 
        // Check for duplicate oid here (player already received reward) and return 403 if it exists
 
        // If there's no duplicate - give virtual goods to player. Return 500 if it fails.
 
        // Save the oid for duplicate checking. Return 500 if it fails.
 
        // Callback passed, return 200 and include '1' in the message body
        res.status(200).send('1');
 
    } else {
        // no match
        res.sendStatus(403);
    }
 
});

<?php
function generate_hash($params, $secret) {
   ksort($params); // All parameters are always checked in alphabetical order
   $s = '';
   foreach ($params as $key => $value) {
     $s .= "$key=$value,";
   }
   $s = substr($s, 0, -1);
   $hash = hash_hmac('md5', $s, $secret);
   return $hash;
}
 
$hash = $_GET['hmac'];
unset($_GET['hmac']);
$signature = generate_hash($_GET, 'xyzKEY'); // insert here the secret hash key you received from Unity Ads support
error_log("req hmac".$hash);
error_log("sig hmac".$signature);
 
// check signature
if($hash != $signature) { header('HTTP/1.1 403 Forbidden'); echo "Signature did not match"; exit; }
 
// check duplicate orders
if(check_duplicate_orders($_GET['oid']) { header('HTTP/1.1 403 Forbidden'); echo "Duplicate order"; exit; }
 
// if not then give the player the item and check that it succeeds.
if(!give_item_to_player($_GET['sid'], $_GET['product']) { header('HTTP/1.1 500 Internal Server Error'); echo "Failed to give item to the player"; exit; }
 
// save the order ID for duplicate checking
if(save_order_number($_GET['oid']) { header('HTTP/1.1 500 Internal Server Error'); echo "Order ID saving failed, user granted item"; exit; }
 
// everything OK, return "1"
header('HTTP/1.1 200 OK');
echo "1";
?>