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5e130122f5
We already send NACKs when a packet is missing. Under high packet loss, however, the recovery packet might get lost two. Forward receiver NACKs to the sender, but only after a delay and after checking that the packet has not arrived in the meantime.
49 lines
1.3 KiB
Go
49 lines
1.3 KiB
Go
// Copyright (c) 2020 by Juliusz Chroboczek.
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// This is not open source software. Copy it, and I'll break into your
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// house and tell your three year-old that Santa doesn't exist.
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// Package conn defines interfaces for connections and tracks.
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package conn
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import (
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"errors"
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"github.com/pion/rtp"
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"github.com/pion/webrtc/v3"
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)
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var ErrConnectionClosed = errors.New("connection is closed")
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var ErrKeyframeNeeded = errors.New("keyframe needed")
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// Type Up represents a connection in the client to server direction.
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type Up interface {
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AddLocal(Down) error
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DelLocal(Down) bool
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Id() string
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Label() string
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}
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// Type UpTrack represents a track in the client to server direction.
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type UpTrack interface {
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AddLocal(DownTrack) error
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DelLocal(DownTrack) bool
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Label() string
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Codec() *webrtc.RTPCodec
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// get a recent packet. Returns 0 if the packet is not in cache.
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GetRTP(seqno uint16, result []byte) uint16
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Nack(conn Up, seqnos []uint16) error
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}
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// Type Down represents a connection in the server to client direction.
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type Down interface {
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GetMaxBitrate(now uint64) uint64
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}
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// Type DownTrack represents a track in the server to client direction.
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type DownTrack interface {
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WriteRTP(packat *rtp.Packet) error
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Accumulate(bytes uint32)
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SetTimeOffset(ntp uint64, rtp uint32)
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SetCname(string)
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}
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