Nuxt 3 app on IIS not serving static files - iis

Question

I'm trying to deploy a Nuxt 3 app on a server using IIS.
The idea is to use reverse proxy to rewrite requests from the external https://www.example.com to the internal http://localhost:8080 where the app is running.
It should be straight forward I thought, with an inbound rule matching everything (.*) and a Rewrite URL like http://localhost:8080/{R:1}:
<?xml version="1.0" encoding="UTF-8"?>
<configuration>
<system.webServer>
<rewrite>
<rules>
<rule name="ReverseProxyInboundRule1" stopProcessing="true">
<match url="(.*)" />
<action type="Rewrite" url="http://localhost:8080/{R:1}" logRewrittenUrl="true" />
</rule>
</rules>
</rewrite>
<httpErrors existingResponse="PassThrough" />
</system.webServer>
</configuration>
But apparently only the dynamic routes are being served correctly, all public static files are not. On those this is the curl response: curl: (92) HTTP/2 stream 0 was not closed cleanly: CANCEL (err 8).
Other notes:
Opening the app locally on http://localhost:8080 works perfectly.
The same behaviour occurs with a fresh Nuxt app.
Usage of iisnode seems not possible because of ES Modules incompatibility: iisnode Error [ERR_REQUIRE_ESM]: require() of ES Module (...)index.mjs not supported.

Answer 1

After adding a rule to force HTTPS it started working as expected, all static files are being served as expected.
<rule name="Force HTTPS" stopProcessing="true">
<match url="(.*)" />
<conditions>
<add input="{HTTPS}" pattern="^OFF$" />
</conditions>
<action type="Redirect" url="https://{HTTP_HOST}{REQUEST_URI}" appendQueryString="false" />
</rule>