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export database to csv in laravel won't work , "the site can't be reach"

I have some code like this in my controller "UserController.php" to export from the model database to CSV.
when I use die dump dd($id,$performance); data that I want to export its looks fine...
die dump img
but when I click the export button, it didn't work
the button code
<span data-href="{{ route('user/export', $user->id) }}" id="export" class="btn btn-success btn-sm" onclick="exportTasks(event.target);">Export</span>
the javascript
<script>
function exportTasks(_this) {
let _url = $(_this).data('href');
window.location.href = _url;
}
</script>
my controller export method
public function exportCsv(Request $request , User $user)
{
$date = \Carbon\Carbon::today();
$id = $request->id;
$performance = Performance::where('user_id', '=', $id)
->get();
$count = 1;
$fileName = 'performance.csv';
$headers = array(
"Content-type" => "text/csv",
"Content-Disposition" => "attachment; filename=$fileName",
"Pragma" => "no-cache",
"Cache-Control" => "must-revalidate, post-check=0, pre-check=0",
"Expires" => "0"
);
$columns = array('No', 'User_ID', 'Username', 'No Order', 'Update Status','Tanggal');
$callback = function() use($performance, $columns) {
$file = fopen('php://output', 'w');
fputcsv($file, $columns);
foreach ($performance as $pr) {
$row['No'] = $count++;
$row['User_ID'] = $pr->user_id;
$row['ID_Moban'] = $pr->id_moban;
$row['Username'] = $pr->user_name;
$row['No Order'] = $pr->no_order;
$row['Update Status'] = $pr->update_status;
$row['Tanggal'] = $pr->created_at;
fputcsv($file, array($row['No'], $row['User_ID'], $row['ID_Moban'], $row['Username'], $row['No Order'], $row['Update Status'], $row['Tanggal']));
}
fclose($file);
};
//dd($id,$performance);
return response()->stream($callback, 200, $headers);
}
my routes
Route::get('user/{id}/export', [UserController::class, 'exportCsv'])->name('user/export');
the error message looks like this

Create post and upload image with Ajax (axios) in Wordpress

So I want my users to be able to create a post in the frontend and upload an image with a form I've created.
When the image is uploaded I want to update an ACF-field with the uploaded image.
I've seen some posts on this but none of them are explained any good.
I want to use Ajax and I want to use axios, so please no jQuery. I also use Qs.
The image itself is never uploaded but the file name is inserted in the media library.
Thank you!
HTML
<form enctype="multipart/form-data" method="post" id="register-store-form">
<fieldset class="store-images mb-3">
<label for="store-images">Add images</label>
<input type="file" id="store_images" name="store_images" accept="image/png, image/jpeg">
</fieldset>
<button class="btn btn-primary" id="update-store">Save store</button>
</form>
JS
const Qs = require('qs');
const axios = require('axios');
const saveStoreBtn = document.querySelector('#update-store');
const addStore = document.querySelector('#add-one-more-store');
function saveStore(e) {
const storeName = document.querySelector('#store-name');
const storeImages = document.querySelector('#store_images');
const storeImageFile = storeImages.files[0];
const ajaxData = {
action : 'create_store',
security : shkGlobal.addStore,
name : storeName.value,
image_name : storeImageFile.name,
image_type : storeImageFile.type,
description : storeDescription.value
};
axios.post(shkGlobal.adminUrl, Qs.stringify(ajaxData))
.then(function(response) {
saveStoreBtn.innerHTML = "Thank you";
})
.catch(err => console.log('Not working', err));
};
updateStoreBtn.addEventListener('click', saveStore);
PHP
function create_store() {
check_ajax_referer('add_store', 'security');
$name_value = $_POST['name'];
$image_name = $_POST['image_name'];
$image_type = $_POST['image_type'];
$post_data = array(
'post_type' => 'store',
'post_title' => htmlentities($name_value),
'post_content' => $_POST['description'],
'post_status' => 'draft'
);
$post_id = wp_insert_post( $post_data );
if ( ! function_exists( 'wp_handle_upload' ) ) require_once( ABSPATH . 'wp-admin/includes/file.php' );
$uploadedfile = $_FILES[$image_name];
$upload_overrides = array( 'test_form' => false );
$movefile = wp_handle_upload( $uploadedfile, $upload_overrides );
if ($movefile) {
$wp_upload_dir = wp_upload_dir();
$attachment = array(
'guid' => $wp_upload_dir['url'].'/'.$image_name,
'post_mime_type' => $image_type,
'post_title' => $image_name,
'post_content' => 'File '.$image_name,
'post_status' => 'inherit'
);
$attach_id = wp_insert_attachment($attachment, $movefile['file']);
update_field('field_602019eba7767', $attach_id, $post_id);
}
echo json_decode($response);
exit;
}
add_action('wp_ajax_create_store', 'create_store');
add_action('wp_ajax_nopriv_create_store', 'create_store');

There are two problems in your case, first one that you are uploading multiple files, so structure of $_FILES will be different. Second one is that you specified store_images instead store_images[] for multiple file upload.
So in html change <input type="file" name="store_images" multiple> to <input type="file" name="store_images[]" multiple>
And in php, change your code accordingly to example below.
$files = $_FILES['store_images];
foreach ($files as $key => $value) {
if ($files['name']) {
$file = array(
'name' => $files['name'][$key],
'type' => $files['type'][$key],
'tmp_name' => $files['tmp_name'][$key],
'error' => $files['error'][$key],
'size' => $files['size'][$key]
);
wp_handle_upload($file);
}
}
}

Campaign Monitor Ajax form submission

Campaign Monitor seems to have updated their code snippets to use a different method of submitting the forms. Now in the <form> tag there's a data-id attribute. None of the usual ways of submitting the forms using Ajax work anymore. Does anybody know how to use Ajax to submit the new style of Campaign Monitor forms?
Here's the code snippet Campaign Monitor gives me:
<form id="subForm" class="js-cm-form" action="https://www.createsend.com/t/subscribeerror?description=" method="post" data-id="A61C50BDC994654B1D79D5719EC1255C09788D1CED7F46D508DAE8944C2CB34BA5EC78954EB81FB5F54AD0716B1F245E696D5CFAF72B819D19DC3B44517">
<p>
<label for="fieldEmail">Email</label>
<br />
<input id="fieldEmail" name="cm-wmpt-wmpt" type="email" class="js-cm-email-input"
required />
</p>
<p>
<button class="js-cm-submit-button" type="submit">Subscribe</button>
</p>
</form>
<script type="text/javascript" src="https://js.createsend1.com/javascript/copypastesubscribeformlogic.js"></script>

I emailed their support, so I can answer the question myself. They've replaced all the old methods with their API. You need to have the form's action set to your own endpoint (e.g. signup.php).
I'm using PHP, so I downloaded their PHP API wrapper from https://github.com/campaignmonitor/createsend-php. A simple example is like this:
require_once 'lib/campaignmonitor/csrest_subscribers.php';
$auth = array(
'api_key' => 'Your API key'
);
$wrap = new CS_REST_Subscribers( 'Your list ID', $auth );
$result = $wrap->add( array(
'EmailAddress' => 'Subscriber email',
'Name' => 'Subscriber name',
'CustomFields' => array(
array(
'Key' => 'Field 1 Key',
'Value' => 'Field Value'
),
array(
'Key' => 'Field 2 Key',
'Value' => 'Field Value'
),
array(
'Key' => 'Multi Option Field 1',
'Value' => 'Option 1'
),
array(
'Key' => 'Multi Option Field 1',
'Value' => 'Option 2'
)
),
'ConsentToTrack' => 'yes',
'Resubscribe' => true
) );
Update: Here's my complete PHP if you're curious:
require_once 'libs/campaignmonitor/csrest_subscribers.php';
$success_message = 'You\'ve been signed up for our email list.';
$error_message_general = 'There was a problem signing you up for the email list. Please try again.';
$error_message_format = 'Please enter a valid email address.';
if ( $_SERVER[ 'REQUEST_METHOD' ] !== 'POST' ) {
renderResponse( true, $error_message_general );
}
else {
$api_key = 'your_api_key_here';
$list_id = 'your_list_id_here';
$email = array_key_exists( 'email', $_POST ) ? $_POST[ 'email' ] : '';
$email = cleanInput( $email );
if ( filter_var( $email, FILTER_VALIDATE_EMAIL ) ) {
try {
$auth = array(
'api_key' => $api_key
);
$wrap = new CS_REST_Subscribers( $list_id, $auth );
$result = $wrap->add( array(
'EmailAddress' => $email,
'ConsentToTrack' => 'yes',
'Resubscribe' => true
) );
if ( $result->was_successful() )
renderResponse( false, $success_message );
else
renderResponse( true, $error_message_general );
}
catch ( Exception $e ) {
renderResponse( true, $error_message_general );
}
}
else {
renderResponse( true, $error_message_format );
}
}
function renderResponse( $error, $message ) {
header( 'Content-Type: application/json' );
$result = [
'error' => $error,
'message' => $message
];
echo json_encode( $result );
die();
}
function cleanInput( $data ) {
$data = trim( $data );
$data = stripslashes( $data );
$data = htmlspecialchars( $data );
return $data;
}

Google Invisible Recaptcha: Cannot contact reCAPTCHA. Check your connection and try again

I'm trying to implement Google Invisible Recaptcha on a website online after the domain registration on google recaptcha site, I followed the documentation, but not works. When send the form, show the alert error:
Cannot contact reCAPTCHA. Check your connection and try again.
This is my code (only the interesting points), HTML/JS:
<script src='https://www.google.com/recaptcha/api.js?
onload=onloadCallback&render=explicit&hl=it' async defer></script>
</head>
<body>
<form method="post" action="contact.php" name="contactform" id="contactform">
<fieldset>
<input name="email" type="text" id="email" required/>
<input type="submit" class="submit" id="submit" value="Contact!" />
</fieldset>
</form>
<script type="text/javascript">
var onSubmit = function(token) {
// ajax call
};
var onloadCallback = function() {
grecaptcha.render('submit', {
'sitekey' : 'PUBLIC_KEY',
'callback' : onSubmit
});
};
</script>
and the contact.php file:
class Captcha
{
private $key = 'PRIVATE_KEY';
public $goo;
public function verify()
{
$postData = http_build_query(
array(
'secret' => $this->key,
'response' => $this->goo,
'remoteip' => $_SERVER['REMOTE_ADDR']
)
);
$options = array('http' =>
array(
'method' => 'POST',
'header' => 'Content-type: application/x-www-form-urlencoded',
'content' => $postData
)
);
$context = stream_context_create($options);
$response = file_get_contents('https://www.google.com/recaptcha/api/siteverify', false, $context);
return json_decode($response);
}
}
$captcha = new Captcha();
$captcha->goo = $_POST['g-recaptcha-response'];
$response = $captcha->verify();
if (!$response->success) {
// not works
}
else {
// works
}
I don't understand what is incorrect.
Thanks for help!

Integrating Payment Gateway in ASP.NET

integration payment gateway in asp.net webform based website. sample code documentation examples are in php only.
I am not sure how to go forward as documentation doesnt seem to be of much help
https://telr.com/support/knowledge-base/hosted-payment-page-integration-guide/
<%# Page Language="C#" AutoEventWireup="true" CodeFile="PaymentProcess.aspx.cs" Inherits="PaymentProcess" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css" rel="stylesheet">
<style>
#telr {
width: 100%;
min-width: 600px;
height: 600px;
frameborder: 0;
}
</style>
</head>
<body>
<form id="form1" runat="server">
<p> Enter You Credit Card Details Here</p>
<p><iframe id= " telr " src= " [url obtained from create order] " ></iframe></p>
<div>
</div>
</form>
<script type="text/javascript">
</script>
</body>
</html>
Any help or pointer is appreciated
UPDATE:
I am trying to using HTTPClient for same but i am not sure if i am doing it wring
protected void btn_Click(object sender, EventArgs e)
{
using (var client = new HttpClient())
{
TelrObj obj = new TelrObj();
obj.ivp_method = "create";
obj.ivp_store = 12345;
obj.ivp_cart = "cardid1234";
obj.ivp_test = 1;
obj.return_auth = "xxxx-xxxx-xxx";
obj.return_can = "";
obj.return_decl = "";
obj.ivp_amount = 10;
obj.bill_fname = "David";
obj.ivp_currency = "USD";
var str = "{ 'method':'create', 'order':{ 'ref':'OrderRef', 'cartid':'cardid1234', 'test':1,'amount':10,'currency':'USD', 'url':'https://secure.telr.com/gateway/process.html?o=OrderRef' }";
var response = client.PostAsync("https://secure.telr.com/gateway/order.json",
new StringContent(JsonConvert.SerializeObject(str).ToString(),
Encoding.UTF8, "application/json"))
.Result;
Response.Write(response);
if (response.IsSuccessStatusCode)
{
dynamic content = JsonConvert.DeserializeObject(
response.Content.ReadAsStringAsync()
.Result);
// Access variables from the returned JSON object
var appHref = content.links.applications.href;
}
}
}
RESPONSE
StatusCode: 417, ReasonPhrase: 'Expectation Failed', Version: 1.1, Content: System.Net.Http.StreamContent, Headers: { Connection: close Date: Tue, 17 Jan 2017 10:52:30 GMT Server: Apache Content-Length: 364 Content-Type: text/html; charset=iso-8859-1 }
I have changed return_auth & ivp_store as i cant share it. Any pointer to do it right would be of great help.
I am confused with there documentation so to do it right way. They dont seem to have any .net example on their website rather they have PHP Plugins which i don't understand.
I found another example for wooCommerce plugin which is in PHP
<?php
if (!defined('ABSPATH')) { exit; } // Exit if accessed directly
if (!defined('WP_CONTENT_URL')) { define('WP_CONTENT_URL', get_option('siteurl').'/wp-content'); }
if (!defined('WP_PLUGIN_URL')) { define('WP_PLUGIN_URL', WP_CONTENT_URL.'/plugins'); }
if (!defined('WP_CONTENT_DIR')) { define('WP_CONTENT_DIR', ABSPATH.'wp-content'); }
if (!defined('WP_PLUGIN_DIR')) { define('WP_PLUGIN_DIR', WP_CONTENT_DIR.'/plugins'); }
function telr_init() {
/**
* __construct function.
*
* #access public
* #return void
*/
class WC_Gateway_Telr extends WC_Payment_Gateway {
public function __construct() {
global $woocommerce;
$this->min_wc_ver="2.3.8";
$this->id = 'telr';
$this->has_fields = false; // No additional fields in checkout page
$this->method_title = __('Telr', 'woocommerce');
$this->method_description = __('Telr Checkout', 'telr-for-woocommerce');
$this->order_button_text = __( 'Proceed to Telr', 'telr-for-woocommerce' );
$this->woocom_ver = $woocommerce->version;
// Load the settings.
$this->init_form_fields(); // Config page fields
$this->init_settings();
if ($this->can_init()) {
$preload='<iframe style="width:1px;height:1px;visibility:hidden;display:none;" src="https://secure.telrcdn.com/preload.html"></iframe>';
$this->enabled = $this->get_config_option('enabled');
$this->title = $this->get_config_option('title');
$this->description = $this->get_config_option('description').$preload;
$this->store_id = $this->get_config_option('store_id');
$this->store_secret = $this->get_config_option('store_secret');
$this->testmode = $this->get_config_option('testmode');
$this->debug = $this->get_config_option('debug');
$this->order_status = $this->get_config_option('order_status');
$this->cart_desc = $this->get_config_option('cart_desc');
$this->form_submission_method = true;
$this->api_endpoint = 'https://secure.telr.com/gateway/order.json';
// Actions
add_action('woocommerce_update_options_payment_gateways_'.$this->id, array($this, 'process_admin_options'));
add_action( 'woocommerce_thankyou', array($this, 'update_order_status'));
} else {
$this->enabled = false;
}
}
private function can_init() {
if (version_compare(PHP_VERSION, '5.5.0') < 0) {
return false;
}
if (!function_exists('curl_version')) { return false; }
if (!function_exists('curl_init')) { return false; }
if (version_compare($this->woocom_ver,$this->min_wc_ver) < 0) {
return false;
}
return true;
}
public function update_order_status($order_id) {
global $woocommerce;
$order = new WC_Order( $order_id );
$order_check = $this->check_order($order_id);
if($order_check) {
$new_status = $this->sorder_status;
if (empty($new_status)) { $new_status="completed"; }
$order->update_status($new_status);
}
}
/**
* Process the payment and return the result.
*
* #access public
* #return array
*/
function process_payment($order_id) {
$order = new WC_Order($order_id);
$result = $this->generate_request($order);
$telr_ref = trim($result['order']['ref']);
$telr_url= trim($result['order']['url']);
if (empty($telr_ref) || empty($telr_url)) {
wc_add_notice('Payment API Failure, Please try again.', 'error');
} else {
update_post_meta( $order_id, '_telr_ref', $telr_ref);
}
return array(
'result' => 'success',
'redirect' => $telr_url,
);
}
public function generate_request($order) {
global $woocommerce;
$order_id = $order->id;
$cart_id = $order_id."_".uniqid();
$cart_desc=trim($this->cart_desc);
if (empty($cart_desc)) { $cart_desc='Order {order_id}'; }
$cart_desc = preg_replace('/{order_id}/i',$order_id,$cart_desc);
$test_mode = ($this->testmode == 'yes') ? 1 : 0;
$return_url = 'auto:'.add_query_arg('utm_nooverride','1',$this->get_return_url($order));
$cancel_url = 'auto:'.$order->get_cancel_order_url();
$data = array(
'ivp_method' => "create",
'ivp_source' => 'WooCommerce '.$woocommerce->version,
'ivp_store' => $this->store_id ,
'ivp_authkey' => $this->store_secret,
'ivp_cart' => $cart_id,
'ivp_test' => $test_mode,
'ivp_amount' => $order->order_total,
'ivp_currency' => get_woocommerce_currency(),
'ivp_desc' => $cart_desc,
'return_auth' => $return_url,
'return_can' => $cancel_url,
'return_decl' => $cancel_url,
'bill_fname' => $order->billing_first_name,
'bill_sname' => $order->billing_last_name,
'bill_addr1' => $order->billing_address_1,
'bill_addr2' => $order->billing_address_2,
'bill_city' => $order->billing_city,
'bill_region' => $order->billing_state,
'bill_zip' => $order->billing_postcode,
'bill_country' => $order->billing_country,
'bill_email' => $order->billing_email,
);
if (is_ssl() && is_user_logged_in()) {
$data['bill_custref'] = get_current_user_id();
}
$response = $this->api_request($data);
return $response;
}
public function check_order($order_id) {
global $woocommerce;
$order_ref = get_post_meta($order_id, '_telr_ref', true);
$data = array(
'ivp_method' => "check",
'ivp_store' => $this->store_id ,
'order_ref' => $order_ref,
'ivp_authkey' => $this->store_secret,
);
$response = $this->api_request($data);
$order_status_arr = array(2,3);
$transaction_status_arr = array('A', 'H');
if (array_key_exists("order", $response)) {
$order_status = $response['order']['status']['code'];
$transaction_status = $response['order']['transaction']['status'];
if ( in_array($order_status, $order_status_arr) && in_array($transaction_status, $transaction_status_arr)) {
return true;
}
}
return false;
}
public function api_request($data) {
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $this->api_endpoint);
curl_setopt($ch, CURLOPT_POST, count($data));
curl_setopt($ch, CURLOPT_POSTFIELDS,$data);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, array('Expect:'));
$results = curl_exec($ch);
curl_close($ch);
$results = json_decode($results,true);
return $results;
}
/* ------------------------------ Admin setting page ------------------------------------------------ */
public function get_config_option($key) {
return $this->get_option($key);
}
public function admin_options() {
if ($this->can_init()) {
$this->show_admin_options();
} else {
$this->not_available();
}
}
public function not_available() {
?>
<div class="inline error"><p><strong><?php _e( 'Gateway Disabled', 'woocommerce' ); ?></strong>: <?php _e( sprintf('Requires WooCommerce %s or later, PHP 5.5 or later, and PHP cURL',$this->min_wc_ver), 'woocommerce' ); ?></p></div>
<?php
}
public function show_admin_options() {
// Admin Panel Options
$configured = true;
if ((empty($this->store_id)) || (empty($this->store_secret))) { $configured=false; }
?>
<h3><?php _e('Telr', 'woocommerce'); ?></h3>
<?php if (!$configured) : ?>
<div id="wc_get_started">
<span class="main"><?php _e('Telr Hosted Payment Page', 'woocommerce'); ?></span>
<span>Telr <?php _e('are a PCI DSS Level 1 certified payment gateway. We guarantee that we will handle the storage, processing and transmission of your customer\'s cardholder data in a manner which meets or exceeds the highest standards in the industry.', 'woocommerce'); ?></span>
<span><br><b>NOTE: </b> You must enter your store ID and authentication key</span>
</div>
<?php else : ?>
<p><?php _e('Telr Hosted Payment Page', 'woocommerce'); ?></p>
<?php endif; ?>
<table class="form-table">
<?php $this->generate_settings_html(); ?>
</table><!--/.form-table-->
<?php
}
// Admin settings fields
function init_form_fields() {
// Initialise Gateway Settings Form Fields
$this->form_fields = array(
'enabled' => array(
'title' => __('Enable/Disable', 'woocommerce'),
'type' => 'checkbox',
'label' => __('Enable Telr', 'woocommerce'),
'default' => 'yes'
),
'title' => array(
'title' => __('Title', 'woocommerce'),
'type' => 'text',
'description' => __('This controls the title which the user sees during checkout.', 'woocommerce'),
'default' => __('Credit/Debit card', 'woocommerce'),
'desc_tip' => true,
),
'description' => array(
'title' => __('Description', 'woocommerce'),
'type' => 'textarea',
'description' => __('This controls the description which the user sees during checkout.', 'woocommerce'),
'default' => __('Pay using a credit or debit card via Telr Secure Payments', 'woocommerce'),
'desc_tip' => true,
),
'cart_desc' => array(
'title' => __('Transaction description', 'woocommerce'),
'type' => 'text',
'description' => __('This controls the transaction description shown within the hosted payment page.', 'woocommerce'),
'default' => __('Your order from StoreName', 'woocommerce'),
'desc_tip' => true,
),
'store_id' => array(
'title' => __('Store ID', 'woocommerce'),
'type' => 'text',
'description' => __('Enter your Telr Store ID.', 'woocommerce'),
'default' => '',
'desc_tip' => true,
'placeholder' => '[StoreID]'
),
'store_secret' => array(
'title' => __('Authentication Key', 'woocommerce'),
'type' => 'text',
'description' => __('This value must match the value configured in the hosted payment page V2 settings', 'woocommerce'),
'default' => '',
'desc_tip' => true,
'placeholder' => '[Authentication Key]'
),
'testmode' => array(
'title' => __('Test Mode', 'woocommerce'),
'type' => 'checkbox',
'label' => __('Generate transactions in test mode', 'woocommerce'),
'default' => 'yes',
'description' => __('Use this whilst testing your integration. You must disable test mode when you are ready to take live transactions')
),
'order_status' => array(
'title' => __('Order Status', 'woocommerce'),
'type' => 'select',
'label' => __('Order status for authorised payments', 'woocommerce'),
'default' => 'processing',
'description' => __('Set the WooCommerce order status that will be used for authorised transations', 'woocommerce'),
'options' => array(
'processing' => __( 'Processing', 'woocommerce' ),
'completed' => __( 'Completed', 'woocommerce' )
)
)
);
}
}
}
if(!function_exists('telr_list_network_plugins')) {
function telr_list_network_plugins() {
if (!is_multisite()) {
return false;
$sitewide_plugins = array_keys((array) get_site_option('active_sitewide_plugins'));
}
if (!is_array($sitewide_plugins)) {
return false;
}
return $sitewide_plugins;
}
}
function add_telr_gateway($methods) {
$methods[] = 'WC_Gateway_Telr';
return $methods;
}
// Add plugin to wordpress/woocommerce
if ((in_array('woocommerce/woocommerce.php', (array)get_option('active_plugins'))) || (in_array('woocommerce/woocommerce.php', (array)telr_list_network_plugins()))) {
add_action('plugins_loaded', 'telr_init', 0);
add_filter('woocommerce_payment_gateways', 'add_telr_gateway');
}
?>

If I use Postman and send a following request to the https://secure.telr.com/gateway/order.json I'm getting HTTP 200:
POST /gateway/order.json HTTP/1.1
Host: secure.telr.com
Content-Type: application/x-www-form-urlencoded
Cache-Control: no-cache
Postman-Token: 570a44c1-9c4e-58b2-5d4d-fdd352272235
ivp_method=create&ivp_store=12345&ivp_authkey=12345&ivp_cart=12345&ivp_test=1&ivp_amount=100.00&ivp_currency=AED&ivp_desc=Description&return_auth=https%3A%2F%2Fdomain.com%2Freturn.html&return_can=https%3A%2F%2Fdomain.com%2Freturn.html&return_decl=https%3A%2F%2Fdomain.com%2Freturn.html
So I guess you're building your request in a wrong way(especially Content-Type which should be application/x-www-form-urlencoded, not application/json).
I cannot test it more since I don't ivp_store parameter, thus following response appears:
{
"method": "create",
"trace": "4001/18544/587dfa99",
"error": {
"message": "E04:Invalid store ID"
}
}
EDIT:
Here's working example:
static void Main(string[] args)
{
using (var client = new HttpClient())
{
client.BaseAddress = new Uri("https://secure.telr.com/");
client.DefaultRequestHeaders.ExpectContinue = false;
var result = client.PostAsync("gateway/order.json",
new FormUrlEncodedContent(new List<KeyValuePair<string, string>>()
{
new KeyValuePair<string, string>("ivp_method", "create"),
new KeyValuePair<string, string>("ivp_store", "12345"),
new KeyValuePair<string, string>("ivp_authkey", "12345"),
new KeyValuePair<string, string>("ivp_cart", "12345"),
new KeyValuePair<string, string>("ivp_desc", "Desc"),
new KeyValuePair<string, string>("ivp_test", "1"),
new KeyValuePair<string, string>("ivp_amount", "100.00"),
new KeyValuePair<string, string>("ivp_currency", "AED"),
new KeyValuePair<string, string>("return_auth", "https://wwww.google.pl"),
new KeyValuePair<string, string>("return_can", "https://wwww.google.pl"),
new KeyValuePair<string, string>("return_decl", "https://wwww.google.pl"),
})).Result;
Console.WriteLine(result.Content.ReadAsStringAsync().Result);
Console.ReadLine();
}
}
Note following line:
client.DefaultRequestHeaders.ExpectContinue = false;
which is required for this server. If you do not include this line and run my code, you will get following response:
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<html><head>
<title>417 Expectation Failed</title>
</head><body>
<h1>Expectation Failed</h1>
<p>The expectation given in the Expect request-header
field could not be met by this server.
The client sent<pre>
Expect: 100-continue
</pre>
</p><p>Only the 100-continue expectation is supported.</p>
</body></html>
HttpClient by default sends a Expect: 100-continue header, which clearly messes with a server you're trying to connect.