Error comunicate with internal servicecs

I'm trying to make a post on a route that is in an internal service on railway = api-ecompleto.railway.internal , but it's not working, I tried with http, https and without, follow the code:

6e41b675-08ce-4b50-a9ac-760fd5c4f279

you are missing a port in that url
these internal services may get a nice domain, but they are still very much private addresses without any sort of proxy

oh sure, like this ?
http://api-ecompleto.railway.internal:3002/order/deliveryOrder

if that's the port that service listens on then yes

yeh yeh
okkk
i ll try
ok so this is the correct port
but still not works

im just removed railway.internal this time
and add the correct port

how do know thats the correct port

here

this is the api-ecompleto port

that means you are listening on a random port railway assigns you, and 4001 when developing locally
set a PORT variable to 4001 in the ecompleto service variables

ok i ll try

its also worth noting that your ecompleto service would probably need to listen on the host "::"