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| 1 /* |
| 2 * Copyright 2017 The WebRTC project authors. All Rights Reserved. |
| 3 * |
| 4 * Use of this source code is governed by a BSD-style license |
| 5 * that can be found in the LICENSE file in the root of the source |
| 6 * tree. An additional intellectual property rights grant can be found |
| 7 * in the file PATENTS. All contributing project authors may |
| 8 * be found in the AUTHORS file in the root of the source tree. |
| 9 */ |
| 10 #include "webrtc/tools/network_tester/packet_logger.h" |
| 11 |
| 12 #include "webrtc/base/checks.h" |
| 13 #include "webrtc/base/protobuf_utils.h" |
| 14 |
| 15 namespace webrtc { |
| 16 |
| 17 PacketLogger::PacketLogger(const std::string& log_file_path) |
| 18 : packet_logger_stream_(log_file_path, |
| 19 std::ios_base::out | std::ios_base::binary) { |
| 20 RTC_DCHECK(packet_logger_stream_.is_open()); |
| 21 RTC_DCHECK(packet_logger_stream_.good()); |
| 22 } |
| 23 |
| 24 PacketLogger::~PacketLogger() = default; |
| 25 |
| 26 void PacketLogger::LogPacket(const NetworkTesterPacket& packet) { |
| 27 // The protobuffer message will be saved in the following format to the file: |
| 28 // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 29 // | 1 byte | X byte | 1 byte | ... | X byte | |
| 30 // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 31 // | Size of the next | proto | Size of the next | ... | proto | |
| 32 // | proto message | message | proto message | | message | |
| 33 // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 34 ProtoString packet_data; |
| 35 packet.SerializeToString(&packet_data); |
| 36 RTC_DCHECK_LE(packet_data.length(), 255); |
| 37 RTC_DCHECK_GE(packet_data.length(), 0); |
| 38 char proto_size = packet_data.length(); |
| 39 packet_logger_stream_.write(&proto_size, sizeof(proto_size)); |
| 40 packet_logger_stream_.write(packet_data.data(), packet_data.length()); |
| 41 } |
| 42 |
| 43 } // namespace webrtc |
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