Evan c55ea6bb5a Mint game ids on the server, randomly route create-game across workers (#4393)
## What

Game creation no longer requires the caller to pick the `gameID` or
compute its owning worker. The client POSTs to a prefix-less
`/api/create_game`; **nginx (prod) and the vite dev proxy randomly route
it to a worker**, which **mints an id that hashes back to itself** and
returns it along with its `workerIndex`.

## Why it stays correct

The minted id still hashes to the creating worker (via the existing
`generateGameIdForWorker`), so everything downstream that derives the
worker from the gameID — websocket connect, share URL, join flow — keeps
working unchanged. The only thing that moved is *who picks the id and
worker*.

## Changes

- **`src/server/Worker.ts`** — factor create into a shared
`createGameForId`; add `POST /api/create_game` (no id) that mints a
self-owned id and returns `gameInfo` + `workerIndex`/`workerPath`. The
existing `POST /api/create_game/:id` stays.
- **`nginx.conf`** — `location = /api/create_game` proxies to a `random`
worker upstream.
- **`generate-nginx-upstream.sh` + `Dockerfile`** — the entrypoint
generates that upstream from `NUM_WORKERS` at container **start** time.
`NUM_WORKERS` isn't known at image build time (the image is built once
and deployed with different env), so it can't be baked into `nginx.conf`
— hence runtime generation of exactly the live worker ports (no
dead-server padding).
- **`vite.config.ts`** — dev-only middleware forwards `POST
/api/create_game` to a random worker. Vite's `http-proxy` can't pick a
per-request random target, so this is a small middleware plugin (same
pattern as the existing `serveProprietaryDir`), registered before the
`/api` proxy.
- **`src/client/HostLobbyModal.ts`** — stop generating the id
client-side; use the server's.

## Behavior change to note

The host's share link used to be copied **instantly** from a
client-generated id. Now the id comes from the server, so the copy waits
one create round-trip — I moved the URL build/copy into the create
`.then` (and kept the failure path that clears the clipboard). Brief
empty-link state in the modal until create resolves.

## Verification

- tsc + eslint clean; full suite green (1543 tests).
- nginx additions validated with `nginx -t` in isolation (the full file
references container-only paths like `/etc/nginx/mime.types`); upstream
+ `proxy_pass` resolve.
- `generate-nginx-upstream.sh` tested with `NUM_WORKERS` set and unset
(defaults to 1).

Not yet exercised live end-to-end (needs a dev-server restart —
`vite.config.ts` + `Worker.ts` changes aren't hot-reloaded).

🤖 Generated with [Claude Code](https://claude.com/claude-code)

---------

Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-23 17:15:09 -07:00
2025-06-22 08:14:08 -07:00
2026-05-31 15:09:08 +01:00
2025-05-15 23:09:39 -04:00
2025-03-06 15:50:29 -08:00
2025-05-15 23:09:39 -04:00
2026-03-23 13:40:21 -07:00
2026-04-29 12:49:19 -06:00
2026-01-21 10:00:55 -08:00
2026-05-31 15:09:08 +01:00
2026-05-31 15:09:08 +01:00

OpenFrontIO Logo

OpenFront.io is an online real-time strategy game focused on territorial control and alliance building. Players compete to expand their territory, build structures, and form strategic alliances in various maps based on real-world geography.

This is a fork/rewrite of WarFront.io. Credit to https://github.com/WarFrontIO.

CI Crowdin CLA assistant License: AGPL v3 Assets: CC BY-SA 4.0

License

OpenFront source code is licensed under the GNU Affero General Public License v3.0

Current copyright notices appear in:

  • Footer: "© OpenFront and Contributors"
  • Loading screen: "© OpenFront and Contributors"

Modified versions must preserve these notices in reasonably visible locations.

See the LICENSE for complete requirements.

For asset licensing, see LICENSE-ASSETS.
For license history, see LICENSING.md.

🌟 Features

  • Real-time Strategy Gameplay: Expand your territory and engage in strategic battles
  • Alliance System: Form alliances with other players for mutual defense
  • Multiple Maps: Play across various geographical regions including Europe, Asia, Africa, and more
  • Resource Management: Balance your expansion with defensive capabilities
  • Cross-platform: Play in any modern web browser

📋 Prerequisites

  • npm (v10.9.2 or higher)
  • A modern web browser (Chrome, Firefox, Edge, etc.)

🚀 Installation

  1. Clone the repository

    git clone https://github.com/openfrontio/OpenFrontIO.git
    cd OpenFrontIO
    
  2. Install dependencies

    npm run inst
    

    Do NOT use npm install nor npm i but instead use our npm run inst. It runs the safer npm ci --ignore-scripts to install dependencies exactly according to the versions in package-lock.json and doesn't run scripts. This can prevent being hit by a supply chain attack.

🎮 Running the Game

Development Mode

Run both the client and server in development mode with live reloading:

npm run dev

This will:

  • Start the webpack dev server for the client
  • Launch the game server with development settings
  • Open the game in your default browser (to disable this behavior, set SKIP_BROWSER_OPEN=true in your environment)

Client Only

To run just the client with hot reloading:

npm run start:client

Server Only

To run just the server with development settings:

npm run start:server-dev

Connecting to staging or production backends

Sometimes it's useful to connect to production servers when replaying a game, testing user profiles, purchases, or login flow.

To replay a production game, make sure you're on the same commit that the game you want to replay was executed on, you can find the gitCommit value via https://api.openfront.io/game/[gameId]. Unfinished games cannot be replayed on localhost.

To connect to staging api servers:

npm run dev:staging

To connect to production api servers:

npm run dev:prod

🛠️ Development Tools

  • Format code:

    npm run format
    
  • Lint code:

    npm run lint
    
  • Lint and fix code:

    npm run lint:fix
    
  • Testing

    npm test
    

🏗️ Project Structure

  • /src/client - Frontend game client
  • /src/core - Deterministic game simulation
  • /src/server - Backend game server
  • /resources - Static assets (images, maps, etc.)

🤝 Contributing

Contributions and translations are welcome! See CONTRIBUTING.md for the workflow, the approved-issue process, project governance, and translation info.

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