syntax = "proto2"; option optimize_for = LITE_RUNTIME; package webrtc.network_tester.packet; message NetworkTesterPacket { enum Type { HAND_SHAKING = 0; TEST_START = 1; TEST_DATA = 2; TEST_DONE = 3; } optional Type type = 1; optional int64 send_timestamp = 2; optional int64 arrival_timestamp = 3; optional int64 sequence_number = 4; optional int32 packet_size = 5; }