how to create custom push notification using asp.net webservice?

Please use following code from github available for .Net push notification. You need to provide .p12 file in it and you have to set developer/production mode according to your requirement.

Below code is for PHP.

There is no such Code readily available. You can do it like maintain 1 tag field in database table like 1 for iOS device and 2 for android device. I have implemented same functionality and below is code for sending push notification accordingly.

//This function determines which is the device and send notification accordingly.
function sendPushNotificaitonToAllUser($NotificationMsg)
{
    $sql = "select ID,DeviceToken,DeviceType from TblDeviceToken";
    $rs  = mysql_query($sql);
    $num = mysql_num_rows($rs);

    if($num >= 1)
    {
        while($row = mysql_fetch_array($rs))
        {
            $deviceToken = $row['DeviceToken'];
            if($deviceToken!='' || $deviceToken!='NULL')
            {
                if($row['DeviceType']==1)   
                    deliverApplePushNotification($deviceToken,$NotificationMsg);
                else if($row['DeviceType']==2)  
                    sendAndroidPushNotification($deviceToken,$NotificationMsg);
            }
        }
    }     
}

//APPLE PUSH NOTIFICATION DELIVERY
function deliverApplePushNotification($deviceToken,$message)
{
    //Create context
    $ctx = stream_context_create();
    stream_context_set_option($ctx, 'ssl', 'local_cert', PEM_FILE_NAME);
    stream_context_set_option($ctx, 'ssl', 'passphrase', APPLE_PEM_PASSPHRASE);

    //Establish connection
    $fp = stream_socket_client(APPLE_URL, $err, $errstr, 60, STREAM_CLIENT_CONNECT|STREAM_CLIENT_PERSISTENT, $ctx);

    /*
        if (!$fp)
            exit("Failed to connect: $err $errstr" . PHP_EOL);
    */  

    $body['aps'] = array('alert' => $message,   'sound' => 'default'); // Create the payload body
    $payload = json_encode($body); // Encode the payload as JSON
    $msg = chr(0) . pack('n', 32) . pack('H*', $deviceToken) . pack('n', strlen($payload)) . $payload;// Build the binary notification
    $result = fwrite($fp, $msg, strlen($msg));// Send it to the server


    //If want to keep track of delivery can be done from here.
    /*if (!$result)
        echo '<br/>Message not delivered-->$deviceToken' . PHP_EOL;
    else
        echo '<br/>Message successfully delivered-->$deviceToken' . PHP_EOL;        
    */

    fclose($fp); // Close the connection to the server
}

function sendAndroidPushNotification($deviceRegistrationId,$messageText)
{   
    $authenticationID=googleAuthenticate(ANDROID_USERNAME,ANDROID_PASSWORD,ANDROID_SOURCE,ANDROID_SERVICE);
    $result= sendMessageToPhone($authenticationID,$deviceRegistrationId,ANDROID_MSGTYPE,$messageText);
}   

function googleAuthenticate($username, $password, $source="Company-AppName-Version", $service="ac2dm") 
{    
    session_start();
    if( isset($_SESSION['google_auth_id']) && $_SESSION['google_auth_id'] != null)
        return $_SESSION['google_auth_id'];

    // get an authorization token
    $ch = curl_init();
    if(!ch){
        return false;
    }

    curl_setopt($ch, CURLOPT_URL, "https://www.google.com/accounts/ClientLogin");
    $post_fields = "accountType=" . urlencode('HOSTED_OR_GOOGLE')
        . "&Email=" . urlencode($username)
        . "&Passwd=" . urlencode($password)
        . "&source=" . urlencode($source)
        . "&service=" . urlencode($service);
    curl_setopt($ch, CURLOPT_HEADER, true);
    curl_setopt($ch, CURLOPT_POST, true);
    curl_setopt($ch, CURLOPT_POSTFIELDS, $post_fields);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch, CURLOPT_FRESH_CONNECT, true);    
    curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);

    // for debugging the request
    //curl_setopt($ch, CURLINFO_HEADER_OUT, true); // for debugging the request

    $response = curl_exec($ch);

    //var_dump(curl_getinfo($ch)); //for debugging the request
    //var_dump($response);

    curl_close($ch);

    if (strpos($response, '200 OK') === false) {
        return false;
    }

    // find the auth code
    preg_match("/(Auth=)([\w|-]+)/", $response, $matches);

    if (!$matches[2]) {
        return false;
    }

    $_SESSION['google_auth_id'] = $matches[2];
    return $matches[2];
}

function sendMessageToPhone($authCode, $deviceRegistrationId, $msgType, $messageText) 
{
    $headers = array('Authorization: GoogleLogin auth=' . $authCode);
    $data = array(
                            'registration_id' => $deviceRegistrationId,
                            'collapse_key' => $msgType,
                            'data.message' => $messageText //TODO Add more params with just simple data instead           
                        );

    $ch = curl_init();

    curl_setopt($ch, CURLOPT_URL, "https://android.apis.google.com/c2dm/send");
    if ($headers)
        curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);

    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
    curl_setopt($ch, CURLOPT_POST, true);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch, CURLOPT_POSTFIELDS, $data);

    $response = curl_exec($ch);

    curl_close($ch);

    return $response;
}

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