GCM 规范 ID

Question

当 1 个设备具有多个 regid 时，GCM 返回规范 id 错误：

{"multicast_id":xxxx,"success":2,"failure":0,"canonical_ids":1,"results":[{"message_id":"xxxxx"},{"registration_id":"newest reg ID here","message_id":"xxxxxx"}]}

所以它显示了 GCM 应该使用的最新 regid，但为什么不显示你应该删除的 regid（旧的）？我如何知道旧的 regid 是什么以及应该从我的数据库中删除哪个？

Answer 1

Eran 的回答是正确的，尽管我发现它对我来说仍然有点模糊。不过，多亏了他，我找到了解决办法。

说这是你的回应：

{
   "multicast_id":xxxxx,
   "success":7,
   "failure":0,
   "canonical_ids":2,
   "results":[
      {
         "message_id":"0:xxx%xxxxx"
      },
      {
         "message_id":"0:xxx%xxxxx"
      },
      {
         "registration_id":"MY_REG_ID_1",
         "message_id":"0:xxx%xxxxx"
      },
      {
         "message_id":"0:xxx%xxxxx"
      },
      {
         "message_id":"0:xxx%xxxxx"
      },
      {
         "registration_id":"MY_REG_ID_2",
         "message_id":"0:xxx%xxxxx"
      },
      {
         "message_id":"0:xxx%xxxxx"
      }
   ]
}

如您所见，7 条消息中有 2 条是重复的。

这是我向服务器发送消息的方式：

$tokenResult = mysql_query("SELECT reg_ids FROM table_with_regids"); //
$i = 0;
while($row = mysql_fetch_array($tokenResult)) {

     $registrationIDs[$i] = $row['reg_ids'];
     $i++;
}

来自 Eran 的回答：

由于您收到 Google 针对您发送的每个请求的回复，您 应该知道请求中向 Google 发送了哪些注册 ID 触发了这个响应。您必须使用的旧注册 ID delete 是该请求中的第二个注册 ID。

这意味着数组 $registrationIDs[] 的索引 2 和 5 应替换为 MY_REG_ID_1和 MY_REG_ID_2。

最后检查双精度值并删除完全重复的值。结果应该是一个包含 5 个 regid 的数组（或直接从数组中删除该索引，而不是替换为 MY_REG_ID_#）。

Answer 2

您包含的 GCM 响应表明您向两个注册 ID 发送了消息。在 GCM 服务中成功接收到两条消息。仅对于第二条消息，您才获得了规范的注册 ID。

由于您发送的每个请求都会收到来自 Google 的响应，因此您应该知道在触发此响应的请求中向 Google 发送了哪些注册 ID。您必须删除的旧注册 ID 是该请求中的第二个注册 ID。

Answer 3

<?php

//ASSUME gcm_registration_table field
// id || registration_id || user_id || created_at || updated_at


// FIND CANONICAL IDS POSITION
function CanonicalIdPosition($gcm_response)
{
    $c_ids = array();
    foreach ($gcm_response['results'] as $k => $val) {
        if (isset($val['registration_id'])) {
            $c_ids[] = $k;
        }
    }
    if ($c_ids) {
        return $c_ids;
    } else {
        return false;
    }
}

// Find Duplicate registration Ids from Server Matchind to index position
function DuplicateRegIdFromRegistrationTable($canonical_ids)
{

    DB::query("SELECT registration_id FROM gcm_registration_table");
    $results = DB::fetch_assoc_all();
    $duplicate_reg_val = array();

// Match Position and Find Value
    foreach ($results as $key => $val) {
        if (in_array($key, $canonical_ids)) {
            $duplicate_reg_val[] = $val['registration_id'];
        }
    }

    return $duplicate_reg_val;
}

// update existing Duplicate registration id with New Canonical registration ids
function UpdateDuplicateRegIds($duplicateVal)
{

    foreach ($duplicateVal as $val) {
        $sql = "UPDATE gcm_registration_table SET registration_id = {$val} WHERE registration_id ={$val}";
// Some Yours Code...
    }
}

// Method to send Notification to GCM Server
function SendGcmNotification($registatoin_ids_from_table, $message, $gcm_api_key, $dry_run = false)
{

// Set POST variables
    $url = 'https://android.googleapis.com/gcm/send';

    $fields = array(
        'registration_ids' => $registatoin_ids,
        'data' => $message,
        'dry_run' => $dry_run
    );

    $headers = array(
        'Authorization: key=' . $gcm_api_key,
        'Content-Type: application/json'
    );

//print_r($headers);
// Open connection
    if (!class_exists('curl_init')) {
        $ch = curl_init();
    } else {
        echo "Class Doesnot Exist";
        exit();
    }


// Set the url, number of POST vars, POST data
    curl_setopt($ch, CURLOPT_URL, $url);

    curl_setopt($ch, CURLOPT_POST, true);
    curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);

// Disabling SSL Certificate support temporarly
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);

    curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($fields));

// Execute post
    $result = curl_exec($ch);

    if ($result === FALSE) {

        die('Curl failed: ' . curl_error($ch));
        return false;
    } else {
        return json_decode($result, true);
    }

// Close connection
    curl_close($ch);
}


//This Wont Send Notification to Device but gives you response to remove canonical ids
$gcm_response = SendGcmNotification($registatoin_ids_from_table, $message, $gcm_api_key, $dry_run = true);

$canonical_ids = CanonicalIdPosition($gcm_response);

if ($canonical_ids) {
    $duplicate_ids = DuplicateRegIdFromRegistrationTable($canonical_ids);
    UpdateDuplicateRegIds($duplicate_ids);
}

// Finally Get updated Registration Ids from table and send to GCM Server with
$gcm_response = SendGcmNotification($registatoin_ids_from_table, $message, $gcm_api_key, $dry_run = false);

Answer 4

<?php

// API access key from Google API's Console

define( 'API_ACCESS_KEY', 'AIzaSyCa1vcyOF6UhM6cgvnwARBafmdl8haQo1Y' );
$con=mysqli_connect("localhost","root","","bloodbank_master");
$response = array();

$q="SELECT `regester_id` FROM  `gcm`";
$result1 = $con->query($q) ;
if ($result1->num_rows > 0) {

$response["users"] = array();

while ($row = $result1->fetch_array(MYSQLI_BOTH)) {
    $user = array();
    $registrationIds = array($row[0]);


    $msg = array
    (
    'message'   => 'hieee',
    'title'     => 'Blood Bank',
    'subtitle'  => 'This is a subtitle. subtitle',
    'tickerText'    => 'Ticker text here...Ticker text here...Ticker text here',
    'vibrate'   => 1,
    'sound'     => 1,
    'largeIcon' => 'large_icon',
    'smallIcon' => 'small_icon'
    );

    $fields = array
    (
    'registration_ids'  => $registrationIds,
    'data'          => $msg
    );

    $headers = array
    (
    'Authorization: key=' . API_ACCESS_KEY,
    'Content-Type: application/json'
    );

    $ch = curl_init();
    curl_setopt( $ch,CURLOPT_URL, 'https://android.googleapis.com/gcm/send' );
    curl_setopt( $ch,CURLOPT_POST, true );
    curl_setopt( $ch,CURLOPT_HTTPHEADER, $headers );
    curl_setopt( $ch,CURLOPT_RETURNTRANSFER, true );
    curl_setopt( $ch,CURLOPT_SSL_VERIFYPEER, false );
    curl_setopt( $ch,CURLOPT_POSTFIELDS, json_encode( $fields ) );
    $result = curl_exec($ch );
    curl_close( $ch );

    echo $result;
    }
} 
else {
    $response["success"] = 0;
    $response["message"] = "No users found";
}
?>