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/*
* Copyright (c) 2015 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include "webrtc/modules/rtp_rtcp/source/rtcp_packet/bye.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "webrtc/modules/rtp_rtcp/source/rtcp_utility.h"
using ::testing::ElementsAre;
using webrtc::rtcp::Bye;
using webrtc::rtcp::RawPacket;
using webrtc::RTCPUtility::RtcpCommonHeader;
using webrtc::RTCPUtility::RtcpParseCommonHeader;
namespace webrtc {
namespace {
const uint32_t kSenderSsrc = 0x12345678;
const uint32_t kCsrc1 = 0x22232425;
const uint32_t kCsrc2 = 0x33343536;
class RtcpPacketByeTest : public ::testing::Test {
protected:
void BuildPacket() { packet = bye.Build(); }
void ParsePacket() {
RtcpCommonHeader header;
EXPECT_TRUE(
RtcpParseCommonHeader(packet->Buffer(), packet->Length(), &header));
// Check that there is exactly one RTCP packet in the buffer.
EXPECT_EQ(header.BlockSize(), packet->Length());
EXPECT_TRUE(parsed_bye.Parse(
header, packet->Buffer() + RtcpCommonHeader::kHeaderSizeBytes));
}
Bye bye;
rtc::scoped_ptr<RawPacket> packet;
Bye parsed_bye;
};
TEST_F(RtcpPacketByeTest, Bye) {
bye.From(kSenderSsrc);
BuildPacket();
ParsePacket();
EXPECT_EQ(kSenderSsrc, parsed_bye.sender_ssrc());
EXPECT_TRUE(parsed_bye.csrcs().empty());
EXPECT_TRUE(parsed_bye.reason().empty());
}
TEST_F(RtcpPacketByeTest, WithCsrcs) {
bye.From(kSenderSsrc);
EXPECT_TRUE(bye.WithCsrc(kCsrc1));
EXPECT_TRUE(bye.WithCsrc(kCsrc2));
EXPECT_TRUE(bye.reason().empty());
BuildPacket();
EXPECT_EQ(16u, packet->Length()); // Header: 4, 3xSRCs: 12, Reason: 0.
ParsePacket();
EXPECT_EQ(kSenderSsrc, parsed_bye.sender_ssrc());
EXPECT_THAT(parsed_bye.csrcs(), ElementsAre(kCsrc1, kCsrc2));
EXPECT_TRUE(parsed_bye.reason().empty());
}
TEST_F(RtcpPacketByeTest, WithCsrcsAndReason) {
const std::string kReason = "Some Reason";
bye.From(kSenderSsrc);
EXPECT_TRUE(bye.WithCsrc(kCsrc1));
EXPECT_TRUE(bye.WithCsrc(kCsrc2));
bye.WithReason(kReason);
BuildPacket();
EXPECT_EQ(28u, packet->Length()); // Header: 4, 3xSRCs: 12, Reason: 12.
ParsePacket();
EXPECT_EQ(kSenderSsrc, parsed_bye.sender_ssrc());
EXPECT_THAT(parsed_bye.csrcs(), ElementsAre(kCsrc1, kCsrc2));
EXPECT_EQ(kReason, parsed_bye.reason());
}
TEST_F(RtcpPacketByeTest, WithTooManyCsrcs) {
bye.From(kSenderSsrc);
const int kMaxCsrcs = (1 << 5) - 2; // 5 bit len, first item is sender SSRC.
for (int i = 0; i < kMaxCsrcs; ++i) {
EXPECT_TRUE(bye.WithCsrc(i));
}
EXPECT_FALSE(bye.WithCsrc(kMaxCsrcs));
}
TEST_F(RtcpPacketByeTest, WithAReason) {
const std::string kReason = "Some Random Reason";
bye.From(kSenderSsrc);
bye.WithReason(kReason);
BuildPacket();
ParsePacket();
EXPECT_EQ(kSenderSsrc, parsed_bye.sender_ssrc());
EXPECT_TRUE(parsed_bye.csrcs().empty());
EXPECT_EQ(kReason, parsed_bye.reason());
}
TEST_F(RtcpPacketByeTest, WithReasons) {
// Test that packet creation/parsing behave with reasons of different length
// both when it require padding and when it does not.
for (size_t reminder = 0; reminder < 4; ++reminder) {
const std::string kReason(4 + reminder, 'a' + reminder);
bye.From(kSenderSsrc);
bye.WithReason(kReason);
BuildPacket();
ParsePacket();
EXPECT_EQ(kReason, parsed_bye.reason());
}
}
TEST_F(RtcpPacketByeTest, ParseEmptyPacket) {
RtcpCommonHeader header;
header.packet_type = Bye::kPacketType;
header.count_or_format = 0;
header.payload_size_bytes = 0;
uint8_t empty_payload[1];
EXPECT_TRUE(parsed_bye.Parse(header, empty_payload + 1));
EXPECT_EQ(0u, parsed_bye.sender_ssrc());
EXPECT_TRUE(parsed_bye.csrcs().empty());
EXPECT_TRUE(parsed_bye.reason().empty());
}
TEST_F(RtcpPacketByeTest, ParseFailOnInvalidSrcCount) {
bye.From(kSenderSsrc);
BuildPacket();
RtcpCommonHeader header;
RtcpParseCommonHeader(packet->Buffer(), packet->Length(), &header);
header.count_or_format = 2; // Lie there are 2 ssrcs, not one.
EXPECT_FALSE(parsed_bye.Parse(
header, packet->Buffer() + RtcpCommonHeader::kHeaderSizeBytes));
}
TEST_F(RtcpPacketByeTest, ParseFailOnInvalidReasonLength) {
bye.From(kSenderSsrc);
bye.WithReason("18 characters long");
BuildPacket();
RtcpCommonHeader header;
RtcpParseCommonHeader(packet->Buffer(), packet->Length(), &header);
header.payload_size_bytes -= 4; // Payload is usually 32bit aligned.
EXPECT_FALSE(parsed_bye.Parse(
header, packet->Buffer() + RtcpCommonHeader::kHeaderSizeBytes));
}
} // namespace
} // namespace webrtc
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