A look at asm.js and the future with WebAssembly

Re:A look at asm.js and the future with WebAssembly by IshKebab on Saturday January 16, 2016 @06:01AM (#10914982)

Minor correction: you can use UDP, or at least networking with UDP-like characteristics (unreliable, packet based, low latency).

This is because there is a WebRTC data channel you can use that uses SCTP. Emscripten emulates UDP on top of SCTP (which should be just a few bytes overhead per packet). Emscripten also includes the excellent enet networking library which let's you multiplex multiple reliable and unreliable channels on the same connection.

It's kind of a crazy multi-level hack (enet->UDP->SCTP->UDP->C++->JavaScript) but it works well.

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Re:A look at asm.js and the future with WebAssembly by Matthias247 on Saturday January 16, 2016 @06:57AM (#10915064)

But this would require the remote peer to utilize the same protocol encapsulation (UDP->SCTP->UDP), wouldn't it? This means due to browser limitations you can never directly speek an existing UDP/TCP protocol besides HTTP/WS.

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Re:A look at asm.js and the future with WebAssembly by IshKebab on Saturday January 16, 2016 @01:10PM (#10916124)

Yes that's true. I think it is not too much of a limitation though. The major use of UDP is games and if you're writing a game you control the whole protocol anyway.

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