352 lines
14 KiB
C++
352 lines
14 KiB
C++
/*
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* Copyright (c) 2004 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "webrtc/base/asyncpacketsocket.h"
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#include "webrtc/base/gunit.h"
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#include "webrtc/media/base/fakertp.h"
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#include "webrtc/media/base/rtputils.h"
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namespace cricket {
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static const uint8_t kRtpPacketWithMarker[] = {
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0x80, 0x80, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01
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};
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// 3 CSRCs (0x01020304, 0x12345678, 0xAABBCCDD)
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// Extension (0xBEDE, 0x1122334455667788)
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static const uint8_t kRtpPacketWithMarkerAndCsrcAndExtension[] = {
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0x93, 0x80, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01,
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0x01, 0x02, 0x03, 0x04, 0x12, 0x34, 0x56, 0x78, 0xAA, 0xBB, 0xCC, 0xDD,
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0xBE, 0xDE, 0x00, 0x02, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88
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};
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static const uint8_t kInvalidPacket[] = { 0x80, 0x00 };
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static const uint8_t kInvalidPacketWithCsrc[] = {
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0x83, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01,
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0x01, 0x02, 0x03, 0x04, 0x12, 0x34, 0x56, 0x78, 0xAA, 0xBB, 0xCC
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};
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static const uint8_t kInvalidPacketWithCsrcAndExtension1[] = {
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0x93, 0x80, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01,
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0x01, 0x02, 0x03, 0x04, 0x12, 0x34, 0x56, 0x78, 0xAA, 0xBB, 0xCC, 0xDD,
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0xBE, 0xDE, 0x00
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};
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static const uint8_t kInvalidPacketWithCsrcAndExtension2[] = {
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0x93, 0x80, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01,
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0x01, 0x02, 0x03, 0x04, 0x12, 0x34, 0x56, 0x78, 0xAA, 0xBB, 0xCC, 0xDD,
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0xBE, 0xDE, 0x00, 0x02, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77
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};
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// PT = 206, FMT = 1, Sender SSRC = 0x1111, Media SSRC = 0x1111
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// No FCI information is needed for PLI.
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static const uint8_t kNonCompoundRtcpPliFeedbackPacket[] = {
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0x81, 0xCE, 0x00, 0x0C, 0x00, 0x00, 0x11, 0x11, 0x00, 0x00, 0x11, 0x11
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};
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// Packet has only mandatory fixed RTCP header
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// PT = 204, SSRC = 0x1111
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static const uint8_t kNonCompoundRtcpAppPacket[] = {
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0x81, 0xCC, 0x00, 0x0C, 0x00, 0x00, 0x11, 0x11
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};
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// PT = 202, Source count = 0
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static const uint8_t kNonCompoundRtcpSDESPacket[] = {
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0x80, 0xCA, 0x00, 0x00
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};
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static uint8_t kFakeTag[4] = { 0xba, 0xdd, 0xba, 0xdd };
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static uint8_t kTestKey[] = "12345678901234567890";
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static uint8_t kTestAstValue[3] = { 0xaa, 0xbb, 0xcc };
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// Valid rtp Message with 2 byte header extension.
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static uint8_t kRtpMsgWith2ByteExtnHeader[] = {
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0x90, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00,
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0xAA, 0xBB, 0xCC, 0XDD, // SSRC
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0x10, 0x00, 0x00, 0x01, // 2 Byte header extension
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0x01, 0x00, 0x00, 0x00
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};
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// RTP packet with single byte extension header of length 4 bytes.
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// Extension id = 3 and length = 3
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static uint8_t kRtpMsgWithAbsSendTimeExtension[] = {
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0x90, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00,
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0xBE, 0xDE, 0x00, 0x02,
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0x22, 0x00, 0x02, 0x1c,
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0x32, 0xaa, 0xbb, 0xcc,
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};
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// Index of AbsSendTimeExtn data in message |kRtpMsgWithAbsSendTimeExtension|.
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static const int kAstIndexInRtpMsg = 21;
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TEST(RtpUtilsTest, GetRtp) {
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EXPECT_TRUE(IsRtpPacket(kPcmuFrame, sizeof(kPcmuFrame)));
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int pt;
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EXPECT_TRUE(GetRtpPayloadType(kPcmuFrame, sizeof(kPcmuFrame), &pt));
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EXPECT_EQ(0, pt);
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EXPECT_TRUE(GetRtpPayloadType(kRtpPacketWithMarker,
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sizeof(kRtpPacketWithMarker), &pt));
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EXPECT_EQ(0, pt);
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int seq_num;
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EXPECT_TRUE(GetRtpSeqNum(kPcmuFrame, sizeof(kPcmuFrame), &seq_num));
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EXPECT_EQ(1, seq_num);
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uint32_t ts;
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EXPECT_TRUE(GetRtpTimestamp(kPcmuFrame, sizeof(kPcmuFrame), &ts));
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EXPECT_EQ(0u, ts);
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uint32_t ssrc;
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EXPECT_TRUE(GetRtpSsrc(kPcmuFrame, sizeof(kPcmuFrame), &ssrc));
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EXPECT_EQ(1u, ssrc);
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RtpHeader header;
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EXPECT_TRUE(GetRtpHeader(kPcmuFrame, sizeof(kPcmuFrame), &header));
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EXPECT_EQ(0, header.payload_type);
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EXPECT_EQ(1, header.seq_num);
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EXPECT_EQ(0u, header.timestamp);
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EXPECT_EQ(1u, header.ssrc);
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EXPECT_FALSE(GetRtpPayloadType(kInvalidPacket, sizeof(kInvalidPacket), &pt));
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EXPECT_FALSE(GetRtpSeqNum(kInvalidPacket, sizeof(kInvalidPacket), &seq_num));
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EXPECT_FALSE(GetRtpTimestamp(kInvalidPacket, sizeof(kInvalidPacket), &ts));
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EXPECT_FALSE(GetRtpSsrc(kInvalidPacket, sizeof(kInvalidPacket), &ssrc));
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}
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TEST(RtpUtilsTest, SetRtpHeader) {
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uint8_t packet[] = {
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
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};
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RtpHeader header = { 9, 1111, 2222u, 3333u };
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EXPECT_TRUE(SetRtpHeader(packet, sizeof(packet), header));
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// Bits: 10 0 0 0000
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EXPECT_EQ(128u, packet[0]);
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size_t len;
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EXPECT_TRUE(GetRtpHeaderLen(packet, sizeof(packet), &len));
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EXPECT_EQ(12U, len);
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EXPECT_TRUE(GetRtpHeader(packet, sizeof(packet), &header));
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EXPECT_EQ(9, header.payload_type);
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EXPECT_EQ(1111, header.seq_num);
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EXPECT_EQ(2222u, header.timestamp);
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EXPECT_EQ(3333u, header.ssrc);
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}
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TEST(RtpUtilsTest, GetRtpHeaderLen) {
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size_t len;
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EXPECT_TRUE(GetRtpHeaderLen(kPcmuFrame, sizeof(kPcmuFrame), &len));
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EXPECT_EQ(12U, len);
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EXPECT_TRUE(GetRtpHeaderLen(kRtpPacketWithMarkerAndCsrcAndExtension,
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sizeof(kRtpPacketWithMarkerAndCsrcAndExtension),
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&len));
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EXPECT_EQ(sizeof(kRtpPacketWithMarkerAndCsrcAndExtension), len);
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EXPECT_FALSE(GetRtpHeaderLen(kInvalidPacket, sizeof(kInvalidPacket), &len));
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EXPECT_FALSE(GetRtpHeaderLen(kInvalidPacketWithCsrc,
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sizeof(kInvalidPacketWithCsrc), &len));
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EXPECT_FALSE(GetRtpHeaderLen(kInvalidPacketWithCsrcAndExtension1,
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sizeof(kInvalidPacketWithCsrcAndExtension1),
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&len));
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EXPECT_FALSE(GetRtpHeaderLen(kInvalidPacketWithCsrcAndExtension2,
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sizeof(kInvalidPacketWithCsrcAndExtension2),
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&len));
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}
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TEST(RtpUtilsTest, GetRtcp) {
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int pt;
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EXPECT_TRUE(GetRtcpType(kRtcpReport, sizeof(kRtcpReport), &pt));
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EXPECT_EQ(0xc9, pt);
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EXPECT_FALSE(GetRtcpType(kInvalidPacket, sizeof(kInvalidPacket), &pt));
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uint32_t ssrc;
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EXPECT_TRUE(GetRtcpSsrc(kNonCompoundRtcpPliFeedbackPacket,
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sizeof(kNonCompoundRtcpPliFeedbackPacket),
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&ssrc));
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EXPECT_TRUE(GetRtcpSsrc(kNonCompoundRtcpAppPacket,
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sizeof(kNonCompoundRtcpAppPacket),
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&ssrc));
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EXPECT_FALSE(GetRtcpSsrc(kNonCompoundRtcpSDESPacket,
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sizeof(kNonCompoundRtcpSDESPacket),
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&ssrc));
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}
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// Invalid RTP packets.
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TEST(RtpUtilsTest, InvalidRtpHeader) {
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// Rtp message with invalid length.
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const uint8_t kRtpMsgWithInvalidLength[] = {
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0x94, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0xAA, 0xBB, 0xCC, 0XDD, // SSRC
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0xDD, 0xCC, 0xBB, 0xAA, // Only 1 CSRC, but CC count is 4.
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};
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EXPECT_FALSE(ValidateRtpHeader(kRtpMsgWithInvalidLength,
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sizeof(kRtpMsgWithInvalidLength), nullptr));
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// Rtp message with single byte header extension, invalid extension length.
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const uint8_t kRtpMsgWithInvalidExtnLength[] = {
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0x90, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00,
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0xBE, 0xDE, 0x0A, 0x00, // Extn length - 0x0A00
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};
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EXPECT_FALSE(ValidateRtpHeader(kRtpMsgWithInvalidExtnLength,
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sizeof(kRtpMsgWithInvalidExtnLength),
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nullptr));
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}
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// Valid RTP packet with a 2byte header extension.
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TEST(RtpUtilsTest, Valid2ByteExtnHdrRtpMessage) {
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EXPECT_TRUE(ValidateRtpHeader(kRtpMsgWith2ByteExtnHeader,
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sizeof(kRtpMsgWith2ByteExtnHeader), nullptr));
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}
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// Valid RTP packet which has 1 byte header AbsSendTime extension in it.
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TEST(RtpUtilsTest, ValidRtpPacketWithAbsSendTimeExtension) {
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EXPECT_TRUE(ValidateRtpHeader(kRtpMsgWithAbsSendTimeExtension,
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sizeof(kRtpMsgWithAbsSendTimeExtension),
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nullptr));
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}
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// Verify handling of a 2 byte extension header RTP messsage. Currently these
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// messages are not supported.
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TEST(RtpUtilsTest, UpdateAbsSendTimeExtensionIn2ByteHeaderExtn) {
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std::vector<uint8_t> data(
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kRtpMsgWith2ByteExtnHeader,
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kRtpMsgWith2ByteExtnHeader + sizeof(kRtpMsgWith2ByteExtnHeader));
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EXPECT_FALSE(UpdateRtpAbsSendTimeExtension(&data[0], data.size(), 3, 0));
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}
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// Verify finding an extension ID in the TURN send indication message.
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TEST(RtpUtilsTest, UpdateAbsSendTimeExtensionInTurnSendIndication) {
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// A valid STUN indication message with a valid RTP header in data attribute
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// payload field and no extension bit set.
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uint8_t message_without_extension[] = {
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0x00, 0x16, 0x00, 0x18, // length of
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0x21, 0x12, 0xA4, 0x42, // magic cookie
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'0', '1', '2', '3', // transaction id
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'4', '5', '6', '7',
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'8', '9', 'a', 'b',
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0x00, 0x20, 0x00, 0x04, // Mapped address.
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0x00, 0x00, 0x00, 0x00,
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0x00, 0x13, 0x00, 0x0C, // Data attribute.
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0x80, 0x00, 0x00, 0x00, // RTP packet.
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0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00,
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};
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EXPECT_TRUE(UpdateRtpAbsSendTimeExtension(
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message_without_extension, sizeof(message_without_extension), 3, 0));
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// A valid STUN indication message with a valid RTP header and a extension
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// header.
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uint8_t message[] = {
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0x00, 0x16, 0x00, 0x24, // length of
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0x21, 0x12, 0xA4, 0x42, // magic cookie
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'0', '1', '2', '3', // transaction id
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'4', '5', '6', '7',
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'8', '9', 'a', 'b',
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0x00, 0x20, 0x00, 0x04, // Mapped address.
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0x00, 0x00, 0x00, 0x00,
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0x00, 0x13, 0x00, 0x18, // Data attribute.
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0x90, 0x00, 0x00, 0x00, // RTP packet.
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xBE, 0xDE,
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0x00, 0x02, 0x22, 0xaa, 0xbb, 0xcc, 0x32, 0xaa, 0xbb, 0xcc,
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};
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EXPECT_TRUE(UpdateRtpAbsSendTimeExtension(message, sizeof(message), 3, 0));
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}
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// Test without any packet options variables set. This method should return
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// without HMAC value in the packet.
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TEST(RtpUtilsTest, ApplyPacketOptionsWithDefaultValues) {
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rtc::PacketTimeUpdateParams packet_time_params;
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std::vector<uint8_t> rtp_packet(kRtpMsgWithAbsSendTimeExtension,
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kRtpMsgWithAbsSendTimeExtension +
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sizeof(kRtpMsgWithAbsSendTimeExtension));
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rtp_packet.insert(rtp_packet.end(), kFakeTag, kFakeTag + sizeof(kFakeTag));
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EXPECT_TRUE(ApplyPacketOptions(&rtp_packet[0], rtp_packet.size(),
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packet_time_params, 0));
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// Making sure HMAC wasn't updated..
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EXPECT_EQ(0, memcmp(&rtp_packet[sizeof(kRtpMsgWithAbsSendTimeExtension)],
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kFakeTag, 4));
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// Verify AbsouluteSendTime extension field wasn't modified.
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EXPECT_EQ(0, memcmp(&rtp_packet[kAstIndexInRtpMsg], kTestAstValue,
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sizeof(kTestAstValue)));
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}
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// Veirfy HMAC is updated when packet option parameters are set.
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TEST(RtpUtilsTest, ApplyPacketOptionsWithAuthParams) {
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rtc::PacketTimeUpdateParams packet_time_params;
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packet_time_params.srtp_auth_key.assign(kTestKey,
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kTestKey + sizeof(kTestKey));
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packet_time_params.srtp_auth_tag_len = 4;
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std::vector<uint8_t> rtp_packet(kRtpMsgWithAbsSendTimeExtension,
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kRtpMsgWithAbsSendTimeExtension +
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sizeof(kRtpMsgWithAbsSendTimeExtension));
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rtp_packet.insert(rtp_packet.end(), kFakeTag, kFakeTag + sizeof(kFakeTag));
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EXPECT_TRUE(ApplyPacketOptions(&rtp_packet[0], rtp_packet.size(),
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packet_time_params, 0));
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uint8_t kExpectedTag[] = {0xc1, 0x7a, 0x8c, 0xa0};
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EXPECT_EQ(0, memcmp(&rtp_packet[sizeof(kRtpMsgWithAbsSendTimeExtension)],
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kExpectedTag, sizeof(kExpectedTag)));
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// Verify AbsouluteSendTime extension field is not modified.
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EXPECT_EQ(0, memcmp(&rtp_packet[kAstIndexInRtpMsg], kTestAstValue,
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sizeof(kTestAstValue)));
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}
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// Verify finding an extension ID in a raw rtp message.
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TEST(RtpUtilsTest, UpdateAbsSendTimeExtensionInRtpPacket) {
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std::vector<uint8_t> rtp_packet(kRtpMsgWithAbsSendTimeExtension,
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kRtpMsgWithAbsSendTimeExtension +
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sizeof(kRtpMsgWithAbsSendTimeExtension));
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EXPECT_TRUE(UpdateRtpAbsSendTimeExtension(&rtp_packet[0], rtp_packet.size(),
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3, 51183266));
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// Verify that the timestamp was updated.
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const uint8_t kExpectedTimestamp[3] = {0xcc, 0xbb, 0xaa};
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EXPECT_EQ(0, memcmp(&rtp_packet[kAstIndexInRtpMsg], kExpectedTimestamp,
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sizeof(kExpectedTimestamp)));
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}
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// Verify we update both AbsSendTime extension header and HMAC.
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TEST(RtpUtilsTest, ApplyPacketOptionsWithAuthParamsAndAbsSendTime) {
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rtc::PacketTimeUpdateParams packet_time_params;
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packet_time_params.srtp_auth_key.assign(kTestKey,
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kTestKey + sizeof(kTestKey));
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packet_time_params.srtp_auth_tag_len = 4;
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packet_time_params.rtp_sendtime_extension_id = 3;
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// 3 is also present in the test message.
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std::vector<uint8_t> rtp_packet(kRtpMsgWithAbsSendTimeExtension,
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kRtpMsgWithAbsSendTimeExtension +
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sizeof(kRtpMsgWithAbsSendTimeExtension));
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rtp_packet.insert(rtp_packet.end(), kFakeTag, kFakeTag + sizeof(kFakeTag));
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EXPECT_TRUE(ApplyPacketOptions(&rtp_packet[0], rtp_packet.size(),
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packet_time_params, 51183266));
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const uint8_t kExpectedTag[] = {0x81, 0xd1, 0x2c, 0x0e};
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EXPECT_EQ(0, memcmp(&rtp_packet[sizeof(kRtpMsgWithAbsSendTimeExtension)],
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kExpectedTag, sizeof(kExpectedTag)));
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// Verify that the timestamp was updated.
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const uint8_t kExpectedTimestamp[3] = {0xcc, 0xbb, 0xaa};
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EXPECT_EQ(0, memcmp(&rtp_packet[kAstIndexInRtpMsg], kExpectedTimestamp,
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sizeof(kExpectedTimestamp)));
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}
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} // namespace cricket
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