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LibRaptorQ: Fountain Codes for C/C++
- bb88 7y agoFountain codes provide a reliable encoding stream for UDP. This prevents the need to use a complex transport on top of UDP for both unicast and multicast streams.
- vardump 7y agoWhat's the current patent status?
- wmf 7y agohttps://datatracker.ietf.org/ipr/2554/ https://datatracker.ietf.org/ipr/2554/
- bb88 7y agoIt looks like they've always reserved patents for use in any wide-area wireless. So, 3G/4G/5G handsets and chipsets. I'm pretty sure wifi would not be included here, since wifi is not wide area.
- phonon 7y agoQualcomm didn't invest Raptor codes (they bought out the earlier LT codes, which apparently are still patent protected[1]) so it's still somewhat a concern. [1] https://patents.google.com/patent/US7139960B2/en https://patents.google.com/patent/US7139960B2/en
- phonon 7y agoRust version is faster and in active development. https://github.com/cberner/raptorq https://github.com/cberner/raptorq https://www.cberner.com/2019/03/30/raptorq-rfc6330-rust-optimization/ https://www.cberner.com/2019/03/30/raptorq-rfc6330-rust-opti...
- ncmncm 7y agoCitation needed. The Rust thing goes at about 1 Gbps. It doesn't say how fast this one is. "In active development" can mean "not mature yet".
- eigenvalue 7y agoThese fountain codes are some of the coolest and most useful algorithms around. It really is almost like magic, even after you know how they work. I wrote an article a couple years ago about using them for an off-chain file storage layer for a bitcoin-like blockchain that gives a basic overview of why they are useful: https://bit.ly/2Y0ut6X https://bit.ly/2Y0ut6X