uTP Input + Output

[lmangani]

Micro Transport Protocol or µTP (sometimes also uTP) is an open UDP-based variant of the BitTorrent peer-to-peer file sharing protocol intended to mitigate poor latency and other congestion control issues found in conventional BitTorrent over TCP, while providing reliable, ordered delivery.

[amark]

Ordered delivery over UDP based messaging, now that is a tall request!

[lmangani]

uTP sequence number when delivering back to the application and has a smooth congestion control which seems ideal for monitoring when we don't want the stream to interfere with other types of network applications - an interesting protocol: http://www.bittorrent.org/beps/bep_0029.html

The motivation for uTP is for BitTorrent clients to not disrupt internet connections, while still utilizing the unused bandwidth fully.

... 

uTP solves this problem by using the modem queue size as a controller for its send rate. When the queue grows too large, it throttles back.

This lets it utilize the full upload capacity when there is no competition for it, and it lets it throttle back to virtually nothing when there is a lot of interactive traffic.