`did:web` with custom HTTPS port not resolving (`:4434` works only on default `:443`)

[pavan-ranganath]

I’m trying to run OpenCred with a custom HTTPS port, but I’ve found that did:web identifiers only work with the default TLS port (443).

---

Configuration

Here’s the relevant part of my combined.yaml:

app:
  server:
    baseUri: https://my-domain:4434
    bindAddr: ["0.0.0.0"]
    domain: "my-domain"
    key: "/letsencrypt/my-domain/privkey.pem"
    cert: "/letsencrypt/my-domain/fullchain.pem"
    port: 4434
    httpPort: true  # This should disable HTTP
  express:
    httpOnly: false

---

Behavior

• Example URL being created:

  openid4vp://?client_id=did:web:my-domain:4434&request_uri=https://my-domain:4434/workflows/workflow_id/exchanges/z19wbPTwEmNgzQFFvUtnLtTXH/openid/client/authorization/request
  

• If I manually GET:

  https://my-domain:4434/workflows/workflow_id/exchanges/z19wbPTwEmNgzQFFvUtnLtTXH/openid/client/authorization/request
  

  → it works.

• But during the actual OIDC4VP interaction, I only see 1 request from the app:

  1. '/workflows/workflow_id/exchanges/z19sCQoHLkWKZxiWc9YRqK3sU/openid/client/authorization/request' - GET
  

• In contrast, when I switch to default HTTPS port (443), I see all 3 expected requests:

  1. '/workflows/workflow_id/exchanges/z19sCQoHLkWKZxiWc9YRqK3sU/openid/client/authorization/request' - GET
  2. '/.well-known/did.json' - GET
  3. '/workflows/workflow_id/exchanges/z19sCQoHLkWKZxiWc9YRqK3sU/openid/client/authorization/response' - POST
  

---

Expected

For example:

did:web:my-domain:4434

should resolve to

https://my-domain:4434/.well-known/did.json

and all 3 request steps should occur, just as with port 443.

---

Actual

• Only the initial authorization/request GET succeeds on port 4434.
• The .well-known/did.json fetch and the authorization/response POST never happen.

---

Question

• Is support for custom HTTPS ports in did:web not implemented yet in CA DMV app?
• Or am I missing a configuration step to make did:web:my-domain:4434 resolvable and fully process the flow?

Thanks!