WooCommerce Webhook: invalid URL

Question

I am setting up WooCommerce to trigger a webhook upon order creation. I have set the webhook's URL as the url of a local web API we have setup for this purpose:

http://localhost:3000/store/orders/new

WooCommerce does trigger the webhook with the correct data payload, but the request is reported as failed in the webhook's logs:

Status: HTTP http_request_failed Es wurde keine gültige URL übermittelt.: Array

which, translated from German, means "no valid URL was passed"

I then later changed the URL to a web-facing deployment of our API (https://xxx.azurewebsites.net/store/order/new), and the webhook was received without any problems by the API.

I am not sure if WC webhook's don't play nice with urls that have a custom port (in my case, port 3000), so I wanted to ask the question on whether this is true and if there is a way to make WC webhooks play nice with a localhost development environment.

Answer 1

For WooCommerce version 3.3.5, Bjorn's solution doesn't seem to work.

In my case, I had to eddit the file wp-content/plugins/woocommerce/includes/class-wc-webhook.php:185, method deliver.

Comment the wp_safe_remote_request method, and instead, use the insecure http request method.

// Webhook away!
$http_call = _wp_http_get_object();
$response = $http_call->request( $this->get_delivery_url(), $http_args );
//$response = wp_safe_remote_request( $this->get_delivery_url(), $http_args );

Answer 2

It is not the custom port, but localhost.

There is a check in wp-includes/http.php wp_http_validate_url() that rejects all kinds of local IPs unless specifically allowed with a filter on http_request_host_is_external that returns true...

Cheers, Björn

Answer 3

I solved it after inserting the following code at the end of the file: wp-content/themes/MYTHEME/functions.php

function allow_unsafe_urls ( $args ) {
       $args['reject_unsafe_urls'] = false;
       return $args;
    } ;

add_filter( 'http_request_args', 'allow_unsafe_urls' );