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Update open threads — host-based IDE deferred, Caddy root cause documented

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jester 2026-03-22 15:16:32 +00:00
parent 70bc8e36b6
commit 6e95080de3
1 changed files with 25 additions and 19 deletions
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OPEN_THREADS.md
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@ -95,32 +95,37 @@ Working flow:
5. all live code-server HTTP + WS traffic proxied through `/__ide/:id/*`
6. API proxies to `http://<container-ip>:8080`
### Host-based IDE URL — Caddy edge (BLOCKED)
### Host-based IDE URL — deferred
Goal: open IDE on `dev-<vmid>.zerolaghub.dev` instead of raw API IP.
```
Browser → dev-6070.zerolaghub.dev → Caddy → 127.0.0.1:4000 → API
```
State: reverted — Caddy removed, back to working path-based flow.
Root cause understood: Express resolves relative redirects using the `Host`
header. Without `header_up Host {host}` in Caddy, the bootstrap redirect fires
as `http://10.60.0.245:4000/__ide/6070/` instead of staying on the clean hostname.
When revisiting, the full Caddyfile block needed is:
State:
- API env vars set: `DEV_IDE_HOST_SUFFIX=zerolaghub.dev`, `DEV_IDE_RETURN_HOSTED_URL=true`
- API generating correct absolute URL: `http://dev-6070.zerolaghub.dev/?token=...`
- Caddyfile block correct:
```
{
auto_https off
}
http://dev-*.zerolaghub.dev {
@dev host dev-*.zerolaghub.dev
reverse_proxy @dev 127.0.0.1:4000
reverse_proxy @dev 127.0.0.1:4000 {
header_up Host {host}
}
}
```
- `auto_https off` global option added
Blocking issue: browser HSTS cache forces `zerolaghub.dev` subdomains to HTTPS
regardless of Caddy config. Need to clear Chrome HSTS cache:
- `chrome://net-internals/#hsts`
- Delete `zerolaghub.dev` and `dev-6070.zerolaghub.dev`
`header_up Host {host}` is the critical line — without it Express loses the
hostname on every redirect.
Resume here next session.
API env vars already set and working:
- `DEV_IDE_HOST_SUFFIX=zerolaghub.dev`
- `DEV_IDE_RETURN_HOSTED_URL=true`
### Local Dev Access (Headscale/Tailscale — Future)
@ -148,6 +153,7 @@ Completed:
- `/__ide/:id/*` — live tunnel proxy (HTTP + WS, target-bound)
- dev routing experiment removed (`devRouting.js`, `devDePublisher.js` deleted)
- host-based URL generation (`DEV_IDE_HOST_SUFFIX`, `DEV_IDE_RETURN_HOSTED_URL`)
- `handleHostedProxy` — host-based routing via `Host` header vmid extraction
Outstanding: