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/*
* Copyright 2017 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 "rtc_tools/network_tester/packet_logger.h"
#include "rtc_base/checks.h"
#include "rtc_base/protobuf_utils.h"
namespace webrtc {
PacketLogger::PacketLogger(const std::string& log_file_path)
: packet_logger_stream_(log_file_path,
std::ios_base::out | std::ios_base::binary) {
RTC_DCHECK(packet_logger_stream_.is_open());
RTC_DCHECK(packet_logger_stream_.good());
}
PacketLogger::~PacketLogger() = default;
void PacketLogger::LogPacket(const NetworkTesterPacket& packet) {
// The protobuffer message will be saved in the following format to the file:
// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
// | 1 byte | X byte | 1 byte | ... | X byte |
// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
// | Size of the next | proto | Size of the next | ... | proto |
// | proto message | message | proto message | | message |
// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
ProtoString packet_data;
packet.SerializeToString(&packet_data);
RTC_DCHECK_LE(packet_data.length(), 255);
RTC_DCHECK_GE(packet_data.length(), 0);
char proto_size = packet_data.length();
packet_logger_stream_.write(&proto_size, sizeof(proto_size));
packet_logger_stream_.write(packet_data.data(), packet_data.length());
}
} // namespace webrtc
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