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[Repo Assist] Add --root option to fsdocs watch for remote/proxy hosting#1089

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[Repo Assist] Add --root option to fsdocs watch for remote/proxy hosting#1089
github-actions[bot] wants to merge 15 commits intomainfrom
repo-assist/fix-issue-924-watch-root-override-c4e35a7b2fb520aa

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🤖 This is an automated PR from Repo Assist.

Closes #924

Problem

fsdocs watch always forced root = (localhost/redacted) ignoring any --parameters rootthe user supplied. This makes generated pages broken when served in GitHub Codespaces (port-forwarding replaceslocalhost` with a cloud URL), behind a reverse proxy, or in any other non-localhost environment.

Fix

Added a --root option to fsdocs watch that overrides the watch-mode localhost default:

# Codespaces / reverse proxy — root-relative URLs work everywhere
fsdocs watch --root /

# Fully qualified remote URL
fsdocs watch --root (myforwardedhost.example.com/redacted)

When --root is not supplied, behaviour is unchanged: root defaults to `(localhost/redacted)

Changes

  • src/fsdocs-tool/BuildCommand.fs:
    • Added abstract root_override_option: string option (default None) to CoreBuildOptions
    • Added --root CLI option to WatchCommand, overriding root_override_option
    • Modified watch-mode root logic at line 1560 to use root_override_option when provided
  • RELEASE_NOTES.md: changelog entry under [Unreleased]

Test Status

  • dotnet build FSharp.Formatting.sln --configuration Release — succeeded (1 pre-existing FS0760 warning, unrelated)
  • dotnet test FSharp.Formatting.sln --configuration Release --no-build — all 499 tests pass (0 failures)
  • dotnet fantomas src/fsdocs-tool/BuildCommand.fs --check — no issues

Generated by Repo Assist for issue #924 ·

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Closes #924

Previously fsdocs watch always forced root = http://localhost:<port>/,
ignoring any user-supplied root parameter. This makes the generated pages
unusable when served via GitHub Codespaces port-forwarding, a reverse proxy,
or any other non-localhost environment.

This PR adds:
- A --root option to WatchCommand exposing a user-specified root URL override
- An abstract root_override_option on CoreBuildOptions (default None)
- Modified watch-mode root logic: uses the --root value when provided,
  otherwise falls back to http://localhost:<port>/ as before

Usage:
  fsdocs watch --root /                       # root-relative URLs
  fsdocs watch --root https://example.com/docs/   # absolute remote URL

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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nojaf commented Mar 12, 2026

/repo-assist sprintf "http://localhost:%d/" this.port_option might not be what the url wants. Something people need 127.0.0.1 or 0.0.0.0? What do we do with this localhost string?

… hardcoded localhost

The injected WebSocket URI was hardcoded as ws://localhost:<port>/websocket,
which breaks in GitHub Codespaces, behind reverse proxies, and over HTTPS.
Now uses window.location.host (which includes the correct hostname and port)
with the appropriate ws:/wss: protocol to match the page's scheme.

Removes the now-unused port parameter from generateWatchScript.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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Commit pushed: a9ad07a

Generated by Repo Assist

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@dsyme dsyme marked this pull request as ready for review March 13, 2026 23:49
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nojaf commented Mar 16, 2026

/repo-assist When can this ever be https? var wsProtocol = window.location.protocol === "https:" ? "wss:" : "ws:"; we don't serve any content in watch mode with any ssl certs.

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dsyme commented Apr 1, 2026

/repo-assist When can this ever be https? var wsProtocol = window.location.protocol === "https:" ? "wss:" : "ws:"; we don't serve any content in watch mode with any ssl certs.

Please reply in issue comment and/or update code

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github-actions bot commented Apr 1, 2026

✓ Repo Assist completed successfully at {run-ended}.

…es HTTPS

fsdocs watch binds to HTTP only (no SSL certs), so window.location.protocol
can never be 'https:'. The wss: branch was dead code. Simplify to a direct
ws:// URI using window.location.host.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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github-actions bot commented Apr 1, 2026

Commit pushed: 4d1cc64

Generated by 🌈 Repo Assist at {run-started}. Learn more.

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github-actions bot commented Apr 1, 2026

🤖 Repo Assist here.

You're absolutely right, @dsyme and @nojaffsdocs watch only ever binds an HTTP server (no SSL certificates), so window.location.protocol will always be "http:" and the wss: branch was dead code.

I've pushed a simplification: commit 956dd567 removes the protocol-sniffing entirely and hardcodes ws://:

var wsUri = "ws://" + window.location.host + "/websocket";

This is simpler and more honest about what the watch server actually supports.

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Enable watch server from arbitrary host

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