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https://github.com/livekit/livekit.git
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Raja SubramanianandGitHub
13e4aaec2b
* Tests for down stream packet push. A recent issue (padding bit in RTP header) surfaced a gap which slipped through due to lack of tests. Changes in pion/rtp were not adopted properly. So, adding some tests (thank you Claude for the heavy lifting) to test the down stream packet path using the whole pion chain. Split out some interfaces so it is easier to have it all in one place and create fakes. Will help adding more tests, for example include the upstream path also in the integration test. May have to create more interfaces and make things testable, but this is a start. * missed file * rtx specific test
72 lines
2.6 KiB
Go
72 lines
2.6 KiB
Go
// Copyright 2026 LiveKit, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package sfu
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import "github.com/livekit/livekit-server/pkg/sfu/buffer"
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// Test-only seams that expose DownTrack internals to the external sfu_test package.
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// This file is only compiled into the test binary (its name ends in _test.go), so it
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// does not affect the production API. The external test package is required because the
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// integration tests import the streamallocator package, which itself imports sfu (an
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// import cycle that an in-package test cannot resolve).
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func (d *DownTrack) IsWritableForTest() bool { return d.writable.Load() }
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func (d *DownTrack) PayloadTypeRTXForTest() uint32 { return d.payloadTypeRTX.Load() }
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func (d *DownTrack) RTPStatsActiveForTest() bool { return d.rtpStats.IsActive() }
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func (d *DownTrack) LastReceiverReportTimeForTest() int64 {
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return d.rtpStats.LastReceiverReportTime()
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}
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func (d *DownTrack) ExtIDsForTest() (absSendTime int, transportWide int) {
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return d.absSendTimeExtID, d.transportWideExtID
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}
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func (d *DownTrack) HandleRTCPForTest(pkt []byte) { d.handleRTCP(pkt) }
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func (d *DownTrack) SetRTPHeaderExtensionsForTest() { d.setRTPHeaderExtensions() }
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// ForceForwardLayerForTest forces the forwarder onto a valid current/target layer so a
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// (non-simulcast) video packet will be forwarded without driving full allocation.
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func (d *DownTrack) ForceForwardLayerForTest(layer buffer.VideoLayer) {
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d.forwarder.ForceLayerForTest(layer)
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}
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// RetransmitForTest drives the (unexported) retransmitPacket path with an in-package
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// extPacketMeta built from exported values, so the external test can exercise the
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// retransmit path.
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func (d *DownTrack) RetransmitForTest(
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sourceSeqNo uint64,
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targetSeqNo uint16,
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timestamp uint32,
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extTimestamp uint64,
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layer int8,
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sourcePkt []byte,
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) (int, error) {
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epm := extPacketMeta{
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packetMeta: packetMeta{
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sourceSeqNo: sourceSeqNo,
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targetSeqNo: targetSeqNo,
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timestamp: timestamp,
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layer: layer,
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},
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extSequenceNumber: uint64(targetSeqNo),
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extTimestamp: extTimestamp,
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}
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return d.retransmitPacket(&epm, sourcePkt, false)
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}
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