udp: add feature

[milahu]

would be nice to have caniuse.com/udp

afaik, no mainstream browser has full UDP support (raw UDP support)
only HTTP/3 (HTTP over QUIC) which is based on UDP

UDP is required for

• bittorrent: UDP trackers, DHT, uTP
• online games

UDP support is part of github.com/WICG/direct-sockets

alternatives

• Web Sockets
• WebRTC Peer-to-peer connections
• WebTransport

afaik, no mainstream browser has full UDP support (raw UDP support)

IPFS (bittorrent over TCP) is a workaround for this limitation, but IPFS is slow
so the actual solution would be web browsers with full UDP support

IPFS docs on QUIC: docs.libp2p.io/concepts/transports/quic/

QUIC is a new transport protocol that provides an always-encrypted, stream-multiplexed connection built on top of UDP.

In addition to defining the QUIC transport, the IETF also standardized a new version of HTTP that runs on top of QUIC

related

• WebSockets, UDP, and benchmarks
  • It's likely arbitrary UDP connections will never be part of any web specification because of security concerns. The closest thing to what you're after will likely come as part of WebRTC and it's associated JSEP protocol.
• How to talk to UDP sockets with HTML5?
• chrome apps: chrome.sockets.udp
• WebRTC DHT webtorrent/webtorrent#288