Toshit ChawdaandClaude Opus 5 1d6d0da950 feat(puter.js): transferables in AppConnection.postMessage (#3776)
`postMessage(message, transfer)` (or `{ transfer }`) moves ArrayBuffers,
MessagePorts, streams and the rest to the target app instead of copying
them. The second argument is optional, so existing callers are unchanged.

The transfer list rides in the message body as well as the real transfer
list: structured clone's memory map keeps those objects identical to the
ones inside `contents`, which is how the desktop picks them out mid-relay
and keeps transferring them onward rather than leaving copies behind. Both
`messageToApp` paths carry it — the direct iframe relay and the connection
path that `launchApp()` between apps actually uses.

The desktop forwards the list as-is and lets postMessage judge it. A list
that arrived through the SDK was already validated by the browser on the
first hop, and validating again here would mean an allowlist of
transferable types that silently downgrades an unrecognised one to a copy.
A bad list only reaches us from an app that hand-wrote the envelope; that
throws without detaching anything, and is caught so it cannot escape
`ipc_listener` as an unhandled rejection.

Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-09-08 08:57:52 -07:00

Puter.com, The Personal Cloud Computer: All your files, apps, and games in one place accessible from anywhere at any time.

The Open-Source Internet Computer!

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Puter

Puter is an advanced, open-source, self-hostable internet computer designed to be feature-rich, fast, and highly extensible.

For Users

Puter's goal is to provide you with every app and feature you need to work, create, and play under one roof. From a simple Notepad and Voice Recorder to Spreadsheet and Camera, Puter wants to be the all-in-one solution for your digital life.

For Developers

Puter provides everything you need to build and publish web apps and games. From AI to Cloud Storage and Database to Serverless Workers, Puter has you covered. Puter also helps you get users! Once you build your app, you can publish it on our App Store to reach and monetize users.


Getting Started

💻 Local Development

git clone https://github.com/HeyPuter/puter
cd puter
npm install
npm start

This should launch Puter at http://puter.localhost:4100


🚀 Self-Hosting

Linux/macOS

curl -fsSL https://puter.com/selfhost | sh

Windows

irm https://puter.com/selfhost?os=windows | iex

For more details, see Self-Hosting Puter.


☁️ Puter.com

Puter is available as a hosted service at puter.com.


Support

Connect with the maintainers and community through these channels:

We are always happy to help you with any questions you may have. Don't hesitate to ask!


License

This repository, including all its contents, sub-projects, modules, and components, is licensed under AGPL-3.0 unless explicitly stated otherwise. Third-party libraries included in this repository may be subject to their own licenses.


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