https://webrtc.googlesource.com/src/+/e887cbefa32dddb30bed30930e9fddc0df0244ff/modules/rtp_rtcp/include/rtp_packet_sender.h
modules/rtp_rtcp/include/rtp_packet_sender.h - src - Git at Google
packet sendermodulesrtprtcpinclude
https://webrtc.googlesource.com/src/+/437408bd428c915b11f44df4f35cf1834acd61c9/net/dcsctp/socket/packet_sender.h
net/dcsctp/socket/packet_sender.h - src - Git at Google
packet sendersocketsrcgitgoogle