snapshot of https://github.com/pion/webrtc.git (main, 2026-09-15; blobs > 131072B omitted)

rtptransceiverinit_go_test.go

@@ -0,0 +1,78 @@
+// SPDX-FileCopyrightText: 2026 The Pion community <https://pion.ly>
+// SPDX-License-Identifier: MIT
+
+//go:build !js
+
+package webrtc
+
+import (
+	"context"
+	"testing"
+	"time"
+
+	"github.com/pion/transport/v4/test"
+	"github.com/stretchr/testify/assert"
+)
+
+func Test_RTPTransceiverInit_SSRC(t *testing.T) {
+	lim := test.TimeOut(time.Second * 30) //nolint
+	defer lim.Stop()
+
+	report := test.CheckRoutines(t)
+	defer report()
+
+	track, err := NewTrackLocalStaticSample(RTPCodecCapability{MimeType: MimeTypeOpus}, "a", "b")
+	assert.NoError(t, err)
+
+	t.Run("SSRC of 0 is ignored", func(t *testing.T) {
+		offerer, answerer, err := newPair()
+		assert.NoError(t, err)
+
+		ctx, cancel := context.WithCancel(context.Background())
+		answerer.OnTrack(func(track *TrackRemote, _ *RTPReceiver) {
+			assert.NotEqual(t, 0, track.SSRC())
+			cancel()
+		})
+
+		_, err = offerer.AddTransceiverFromTrack(track, RTPTransceiverInit{
+			Direction: RTPTransceiverDirectionSendonly,
+			SendEncodings: []RTPEncodingParameters{
+				{
+					RTPCodingParameters: RTPCodingParameters{
+						SSRC: 0,
+					},
+				},
+			},
+		})
+		assert.NoError(t, err)
+		assert.NoError(t, signalPair(offerer, answerer))
+		sendVideoUntilDone(t, ctx.Done(), []*TrackLocalStaticSample{track})
+		closePairNow(t, offerer, answerer)
+	})
+
+	t.Run("SSRC of 5000", func(t *testing.T) {
+		offerer, answerer, err := newPair()
+		assert.NoError(t, err)
+
+		ctx, cancel := context.WithCancel(context.Background())
+		answerer.OnTrack(func(track *TrackRemote, _ *RTPReceiver) {
+			assert.NotEqual(t, 5000, track.SSRC())
+			cancel()
+		})
+
+		_, err = offerer.AddTransceiverFromTrack(track, RTPTransceiverInit{
+			Direction: RTPTransceiverDirectionSendonly,
+			SendEncodings: []RTPEncodingParameters{
+				{
+					RTPCodingParameters: RTPCodingParameters{
+						SSRC: 5000,
+					},
+				},
+			},
+		})
+		assert.NoError(t, err)
+		assert.NoError(t, signalPair(offerer, answerer))
+		sendVideoUntilDone(t, ctx.Done(), []*TrackLocalStaticSample{track})
+		closePairNow(t, offerer, answerer)
+	})
+}