Coinbase Commerce Webhooks API PHP

Question

I'm new to PHP development

I'm trying to learn by implementing some real projects for fun. So I tried to build a bitcoin app where customers can pay in cryptocurrency.

So I start with Coinbase commerce API

I successfully implement the charge page and everything is working well until I reached the point where I have to deal with WEBHOOKS 😔

I'm following this documentation

https://github.com/coinbase/coinbase-commerce-php/blob/master/README.md

And that's the WEBHOOKs code

`<?php
require_once __DIR__ . "/vendor/autoload.php";
use CoinbaseCommerce\Webhook;
/**
 * To run this example please read README.md file
 * Past your Webhook Secret Key from Settings/Webhook section
 * Make sure you don't store your Secret Key in your source code!
 */
$secret = 'SECRET_KEY';
$headerName = 'X-Cc-Webhook-Signature';
$headers = getallheaders();
$signraturHeader = isset($headers[$headerName]) ? $headers[$headerName] : null;
$payload = trim(file_get_contents('php://input'));
try {
    $event = Webhook::buildEvent($payload, $signraturHeader, $secret);
    http_response_code(200);
    echo sprintf('Successully verified event with id %s and type %s.', $event->id, $event->type);
} catch (\Exception $exception) {
    http_response_code(400);
    echo 'Error occured. ' . $exception->getMessage();
}
`

When I access to the we hooks URL I got this error

Error occured. Invalid payload provided. No JSON object could be decoded

Please 🙏 I want someone to explain to me this error

Thanks in advance.

Answer 1

Seems like you are making a GET (No payload data) request to a url that is expecting a POST (Has payload data) request from the web-hook.

To test API's with POST, PUT, GET requests, you can use tools like PostMan .
You can build JSON payloads manually and test your endpoints.

Answer 2

Try this

$headerName = 'x-cc-webhook-signature';

$signraturHeader = isset($headers[$headerName]) ? $headers[$headerName] : null;

instead of

$headerName = 'X-Cc-Webhook-Signature';

$signraturHeader = isset($headers[$headerName]) ? $headers[$headerName] : null;