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implement packet reordering for UDP / Multicast transports (#132)

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* implement packet reordering for UDP transport

* rtcpreceiver: stop handling unordered / duplicate packets

* remote useless Sleep() from tests
This commit is contained in:
Alessandro Ros
2022-07-05 23:29:03 +02:00
committed by GitHub
parent c6221476fc
commit df7336b5e8
12 changed files with 376 additions and 152 deletions
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182
pkg/rtpreorderer/reorderer_test.go Normal file
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@@ -0,0 +1,182 @@
package rtpreorderer
import (
"testing"
"github.com/pion/rtp"
"github.com/stretchr/testify/require"
)
func TestReorder(t *testing.T) {
sequence := []struct {
in *rtp.Packet
out []*rtp.Packet
}{
{
// first packet
&rtp.Packet{
Header: rtp.Header{
SequenceNumber: 65530,
},
},
[]*rtp.Packet{{
Header: rtp.Header{
SequenceNumber: 65530,
},
}},
},
{
// packet sent before first packet
&rtp.Packet{
Header: rtp.Header{
SequenceNumber: 65529,
},
},
[]*rtp.Packet(nil),
},
{
// ok
&rtp.Packet{
Header: rtp.Header{
SequenceNumber: 65531,
},
},
[]*rtp.Packet{{
Header: rtp.Header{
SequenceNumber: 65531,
},
}},
},
{
// duplicated
&rtp.Packet{
Header: rtp.Header{
SequenceNumber: 65531,
},
},
[]*rtp.Packet(nil),
},
{
// gap
&rtp.Packet{
Header: rtp.Header{
SequenceNumber: 65535,
},
},
[]*rtp.Packet(nil),
},
{
// unordered
&rtp.Packet{
Header: rtp.Header{
SequenceNumber: 65533,
PayloadType: 96,
},
},
[]*rtp.Packet(nil),
},
{
// unordered + duplicated
&rtp.Packet{
Header: rtp.Header{
SequenceNumber: 65533,
PayloadType: 97,
},
},
[]*rtp.Packet(nil),
},
{
// unordered
&rtp.Packet{
Header: rtp.Header{
SequenceNumber: 65532,
},
},
[]*rtp.Packet{
{
Header: rtp.Header{
SequenceNumber: 65532,
},
},
{
Header: rtp.Header{
SequenceNumber: 65533,
PayloadType: 96,
},
},
},
},
{
// unordered
&rtp.Packet{
Header: rtp.Header{
SequenceNumber: 65534,
},
},
[]*rtp.Packet{
{
Header: rtp.Header{
SequenceNumber: 65534,
},
},
{
Header: rtp.Header{
SequenceNumber: 65535,
},
},
},
},
{
// overflow + gap
&rtp.Packet{
Header: rtp.Header{
SequenceNumber: 1,
},
},
[]*rtp.Packet(nil),
},
{
// unordered
&rtp.Packet{
Header: rtp.Header{
SequenceNumber: 0,
},
},
[]*rtp.Packet{
{
Header: rtp.Header{
SequenceNumber: 0,
},
},
{
Header: rtp.Header{
SequenceNumber: 1,
},
},
},
},
{
// buffer is full
&rtp.Packet{
Header: rtp.Header{
SequenceNumber: 67,
},
},
[]*rtp.Packet{
{
Header: rtp.Header{
SequenceNumber: 67,
},
},
},
},
}
r := New()
r.absPos = 40
for _, entry := range sequence {
out := r.Process(entry.in)
require.Equal(t, entry.out, out)
}
}