Add packet logger and server

webrtc/tools/network_tester/packet_logger.h

 /*
  *  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.
  */
 
-#ifndef WEBRTC_TOOLS_NETWORK_TESTER_PACKET_SENDER_H_
-#define WEBRTC_TOOLS_NETWORK_TESTER_PACKET_SENDER_H_
+#ifndef WEBRTC_TOOLS_NETWORK_TESTER_PACKET_LOGGER_H_
+#define WEBRTC_TOOLS_NETWORK_TESTER_PACKET_LOGGER_H_
 
-#include <memory>
+#include <fstream>
 #include <string>
 
+#include "webrtc/base/constructormagic.h"
 #include "webrtc/base/ignore_wundef.h"
-#include "webrtc/base/task_queue.h"
 
 #ifdef WEBRTC_NETWORK_TESTER_PROTO
 RTC_PUSH_IGNORING_WUNDEF()
 #include "webrtc/tools/network_tester/network_tester_packet.pb.h"
 RTC_POP_IGNORING_WUNDEF()
 using webrtc::network_tester::packet::NetworkTesterPacket;
 #else
 class NetworkTesterPacket;
 #endif  // WEBRTC_NETWORK_TESTER_PROTO
 
 namespace webrtc {
 
-class TestController;
+class PacketLogger {
+ public:
+  explicit PacketLogger(const std::string& log_file_path);
+  ~PacketLogger();
 
-class PacketSender {
- public:
-  PacketSender(TestController* test_controller,
-               const std::string& config_file_path);
-  ~PacketSender();
-
-  void StartSending();
-  void StopSending();
-  bool IsSending();
-
-  void SendPacket();
-
-  int64_t GetSendIntervalMs();
-  void UpdateTestSetting(size_t packet_size, int64_t send_interval_ms);
+  void LogPacket(const NetworkTesterPacket& packet);
 
  private:
-  rtc::TaskQueue worker_queue_;
-  size_t packet_size_;
-  int64_t send_interval_ms_;
-  int64_t sequence_number_;
-  bool sending_;
-  const std::string config_file_path_;
-  TestController* const test_controller_;
-  RTC_DISALLOW_COPY_AND_ASSIGN(PacketSender);
+  std::ofstream packet_logger_stream_;
+
+  RTC_DISALLOW_COPY_AND_ASSIGN(PacketLogger);
 };
 
 }  // namespace webrtc
 
-#endif  // WEBRTC_TOOLS_NETWORK_TESTER_PACKET_SENDER_H_
+#endif  // WEBRTC_TOOLS_NETWORK_TESTER_PACKET_LOGGER_H_