petar / utp

Implements uTP, the micro transport protocol as used with Bittorrent

utp

Package utp implements uTP, the micro transport protocol as used with Bittorrent. It opts for simplicity and reliability over strict adherence to the (poor) spec.

Supported

• Multiple uTP connections switched on a single PacketConn, including those initiated locally.
• Raw access to the PacketConn for non-uTP purposes, like sharing the PacketConn with a DHT implementation.

Implementation characteristics

• Receive window size is used to limit out of order packets received.
• There is no MTU path discovery. The minimum size is always used.
• A fixed 64 slot selective ack window is used in both sending and receiving.
• All received non-ACK packets are ACKed in response.

Patches welcomed.