private async Task GetServerTimeOffsetAsync()
{
long min_diff = 1000000;
long bestSentTime = 0, bestServerTime = 0, bestRecvTime = 0;
for (int i = 0; i < Const.MAX_PING_TIMES; i++)
{
// send current time to server
long sentTime = GetTimeMillis();
//byte[] jsonData = Encoding.ASCII.GetBytes("{\"sync_time\":" + sentTime + "}");
string jsonData = "{\"sync_time\":" + sentTime + "}";
_controlSocketWriter.WriteInt32(checked ((int)_controlSocketWriter.MeasureString(jsonData)));
_controlSocketWriter.WriteString(jsonData);
await _controlSocketWriter.StoreAsync();
// receive current time at server
string recvMsg = await receiveMsgAsync(_controlSocketReader);
JsonObject obj = JsonValue.Parse(recvMsg).GetObject();
long serverTime = (long)obj.GetNamedNumber("sync_time");
long recvTime = GetTimeMillis();
if (recvTime - sentTime < min_diff)
{
min_diff = recvTime - sentTime;
bestSentTime = sentTime;
bestServerTime = serverTime;
bestRecvTime = recvTime;
}
}
string sync_str = "" + bestSentTime + "\t" + bestServerTime + "\t" + bestRecvTime + "\n";
await _myLogger.WriteString(sync_str);
Debug.WriteLine(sync_str);
}
public async Task ProcessReceivedPacket(ReceivedPacketInfo receivedPacket)
{
Debug.WriteLine("Process Received Packet");
long recvFrameID = receivedPacket.frameID;
string recvEngineID = receivedPacket.engineID;
SentPacketInfo sentPacket = null;
bool isSuccess;
// increase appropriate amount of tokens
int increaseCount = 0;
for (long frameID = _prevRecvFrameID + 1; frameID < recvFrameID; frameID++)
{
sentPacket = null;
if (Const.IS_EXPERIMENT)
{
// Do not remove since we need to measure latency even for the late response
isSuccess = _sentPackets.TryGetValue(frameID, out sentPacket);
}
else
{
isSuccess = _sentPackets.TryRemove(frameID, out sentPacket);
}
if (isSuccess == true)
{
increaseCount++;
}
}
Debug.WriteLine("Increasing Tokens by " + increaseCount);
IncreaseTokens(increaseCount);
// deal with the current response
isSuccess = _sentPackets.TryGetValue(recvFrameID, out sentPacket);
if (isSuccess == true)
{
// do not increase token if have already received duplicated ack
if (recvFrameID > _prevRecvFrameID)
{
IncreaseTokens(1);
}
if (Const.IS_EXPERIMENT)
{
string log = recvFrameID + "\t" + recvEngineID + "\t" +
sentPacket.generatedTime + "\t" + sentPacket.compressedTime + "\t" +
receivedPacket.msgRecvTime + "\t" + receivedPacket.guidanceDoneTime + "\t" +
receivedPacket.status;
await _myLogger.WriteString(log + "\n");
}
}
if (recvFrameID > _prevRecvFrameID)
{
_prevRecvFrameID = recvFrameID;
}
}