ish VS FilePizza

You can, with ish (https://ish.app). It is a bit slow though and doesn't support the newest releases. (Well and by default it runs Alpine instead of Debian)

On IOS, there is a emulator called ISH which looks great. I haven't tried personally though, I couldn't afford an iphone. I will be using Termux on android for the rest of the post.

I'm a happy daily iSH [1] user, it's an amazing technical project, but I really pine for the day when `apt get blah` will be a reality, using an app available from the official App Store. Be it a paid or free app. CLI only, or with graphics. For concreteness, let's say a Debian-based distro in your iPhone upon tapping Get on Apple's App Store, independently of your location. It is pretty sad that, if this ever comes to be, it will probably be the result of EU/DOJ forces, not of technological advancements.

When do you see this happening (options are number of years)?

[1] https://ish.app/

You can run iSH on the device for Linux (somewhat limited)

https://github.com/ish-app/ish

If you're curious, iSH's source is public: https://github.com/ish-app/ish

You're correct that there is no Linux kernel emulation. They went with reimplementation for that. However, the userland is very much emulated x86 binaries. You can even compile your own C code inside iSH and run it. When you syscall, control passes from the threaded code[0] interpreter into the Linux reimplementation.

The reason why they aren't shipping Debian is that the threaded code technique being used as a JIT substitute in both iSH and UTM SE is far too slow to run a full Debian derivative. Believe me, I tried installing Ubuntu on UTM SE and it took literal hours and flattened my iPad battery in the process. iSH uses Alpine Linux because it's very lightweight[1].

As far as I'm aware there's no secret deal with Apple to lock iSH down. The only limitations I've ran into have to do with MySQL, which wants unaligned atomics, which you can't do on ARM64 without compromising the performance of the emulator. I actually had a discussion with the developer of iSH about this and put in a PR to make MySQL stop crashing iSH.

[0] return-oriented programming

[1] So lightweight it doesn't even ship anything GNU, making it one of the few genuine "Linux distros" with no slash or plus or "I would just like to interject"

> in software side of Ipad IOS, that is the biggest innovation in years

That would be iSH, slow but functional Alpine Linux emulation for iOS.

https://ish.app

> Just imagine how much more versatile the iPad Pro would be if only you could run Linux VMs on it

After installing https://ish.app for Alpine Linux emulation on iPad, one immediately comes up with use cases, even though it's excruciatingly slow.

Hopefully Apple opens up the imminent M3 iPad Pros to run macOS and Linux VMs.

Hmm. I'm not a WebRTC pro but looked into it recently for a hobby project and felt that the typical WebRTC TURN implementation still leaves the TURN server in a quite trusted position. My rough understanding:

- (1) Each client generates a key pair

- (2) The fingerprint of the public key is part of the SDP message each client generates

- (3) The SDP message is somehow exchanged between the clients, out of band, and the session is started. The client's verify the remote peer using the public key from the SDP message.

The problem is that it's not really feasible in most circumstances to exchange the full SDP message out of band, so instead the service provide some mechanism to map a shorter ID in a URL to a centrally stored copy of the SDP. I think this might be where it happens for filepizza [0].

This means that a malicious file sharing operator, being in control of both the TURN service and the out-of-band signalling mechanism, could just MITM the DTLS connection and snoop on all the data going by. The peer's think they have each others public keys but they just have two keys owned by the server.

[0]: https://github.com/kern/filepizza/blob/main/src/channel.ts

Is there a tl;dr on the crdt/collaboration feature? How does one get the share up and running, do you get a special link that you can send to someone? How smooth can it get? I'm guessing it's hard to do without some sort of relay system (like syncthing) or servers for hosting links (like https://file.pizza )

Not magic-wormhole compatible, but saw these two shared on other comments:

- https://sendfiles.dev

- https://file.pizza

Learn More: FilePizza

There are a few browser based p2p file sharing tools [1] and a bunch of CLI tools out there as well for the same job.

# Browser Based

1. FilePizza https://file.pizza/

alternatively, if going the p2p route, they could try something like file.pizza