nack

README

nack

nack demonstrates how to send RTP packets over a connection that both generates and handles NACKs

Instructions

run main.go

go run main.go

You will then see output like

$ go run main.go
2020/12/16 00:27:54 Received RTP
2020/12/16 00:27:54 Received RTP
2020/12/16 00:27:54 Received RTP
2020/12/16 00:27:54 Received RTP
2020/12/16 00:27:54 Received RTP
2020/12/16 00:27:55 Received RTP
2020/12/16 00:27:55 Received NACK
2020/12/16 00:27:55 Received RTP
2020/12/16 00:27:55 Received RTP
2020/12/16 00:27:55 Received RTP
2020/12/16 00:27:55 Received RTP
2020/12/16 00:27:56 Received RTP
2020/12/16 00:27:56 Received NACK
2020/12/16 00:27:56 Received RTP
2020/12/16 00:27:56 Received NACK
2020/12/16 00:27:56 Received RTP
2020/12/16 00:27:56 Received RTP
2020/12/16 00:27:56 Received RTP
2020/12/16 00:27:57 Received RTP
2020/12/16 00:27:57 Received RTP
2020/12/16 00:27:57 Received RTP
2020/12/16 00:27:58 Received RTP
2020/12/16 00:27:58 Received NACK
2020/12/16 00:27:58 Received RTP
2020/12/16 00:27:58 Received RTP
2020/12/16 00:27:58 Received RTP
2020/12/16 00:27:58 Received NACK
2020/12/16 00:27:58 Received RTP
2020/12/16 00:27:58 Received RTP

Introduce loss

You will not see much loss on loopback by default. To introduce 15% loss you can do

$ iptables -A INPUT -m statistic --mode random --probability 0.15 -p udp -j DROP