Intra-App routing not working

[mikkelhegn]

The following method of calling a route within a Spin app written in JS/TS does not work: https://developer.fermyon.com/spin/v2/http-outbound#intra-application-http-requests-by-route

It looks like the call is using the host-name that spin up is binding to - e.g., http://localhost:3001, which causes the following error, even with having allowed_outbound_hosts = ["http://self", "https://self"] in spin.toml

const response = await fetch("/back");

2024-12-09T08:40:17.797984Z ERROR spin_runtime_factors: Outbound network destination not allowed: http://localhost:3001
Warning: A component tried to make an outbound network connection to disallowed destination 'http://localhost:3001'.
To allow this request, add 'allowed_outbound_hosts = ["http://localhost:3001"]' to the manifest component section.