Setting up the XML RPC connection

What is XML-RPC

The WordPress XML-RPC is a specification that aims to standardize communications between different systems. It uses HTTP as the transport mechanism and XML as encoding mechanism which allows for a wide range of data to be transmitted.

For us WordPress peeps, the most important part of this is “different systems”. WordPress needs to communicate with other systems from time to time and until recently XML-RPC was the best candidate for the job. When communicating with other blogging systems like Blogger or Movable Type, or when posting from desktop clients or the official mobile apps, XML-RPC was, and still is, there to help. Source - Kinsta

Proxy Requests in Irving Core

Parts of WordPress rely heavily on a working xml-rpc connection - namely Jetpack.

Add this line to your proxy setup as per the Irving Core docs.

// Proxy sitemaps
`app.use('/xmlrpc.php', passthrough);`