public void Deserialize_Allocate()
{
for (int i = 0; i < 10000; i++)
{
var deserializer = CryptoDtoDeserializer.DeserializeIgnoreSequence(remoteChannel, cryptoDtoPacket);
}
}
public void DeserializeGetDto_Allocate()
{
for (int i = 0; i < 10000; i++)
{
var deserializer = CryptoDtoDeserializer.DeserializeIgnoreSequence(remoteChannel, cryptoDtoPacket);
var dto = deserializer.GetDto <BenchmarkDto>();
}
}
public void Deserialize_LowAllocate()
{
for (int i = 0; i < 10000; i++)
{
buffer.Clear();
var deserializer = CryptoDtoDeserializer.DeserializeIgnoreSequence(buffer, remoteChannel, cryptoDtoPacket);
}
}
private static void TaskVoiceServerReceive(
Logger logger,
CancellationToken cancelToken,
ClientConnectionData connection,
UdpClient udpClient,
BlockingCollection <IMsgPackTypeName> receiveQueue)
{
logger.Debug(nameof(TaskVoiceServerReceive) + " started");
try
{
IPEndPoint sender = new IPEndPoint(IPAddress.Any, 60005);
byte[] data;
while (!cancelToken.IsCancellationRequested)
{
data = udpClient.Receive(ref sender); //UDP is a datagram protocol, not a streaming protocol, so it's whole datagrams here.
if (data.Length < 30 || data.Length > 1500)
{
continue;
}
//Could check that the sender has the right IP - but NAT-ing significantly reduces the attack surface here
connection.VoiceServerBytesReceived += data.Length;
var deserializer = CryptoDtoDeserializer.DeserializeIgnoreSequence(connection.VoiceCryptoChannel, data);
if (!deserializer.IsSequenceValid())
{
logger.Debug("Duplicate or old packet received");
continue; //If a duplicate packet received (because it's UDP) - ignore it
}
//Crypto DTO stream is only concerned with duplicated or old packets, it doesn't discard out-of-order. Need to find out if Opus discards OOO packets.
var dtoName = deserializer.GetDtoName();
if (dtoName == "AR")
{
dtoName = RadioRxDto.TypeNameConst; //The server will be sending RadioRxDto as "AR" to maintain backwards compatibility for a year or two until old clients get updated.
}
switch (dtoName)
{
case RadioRxDto.TypeNameConst:
{
var dto = deserializer.GetDto <RadioRxDto>();
if (connection.ReceiveAudio && connection.IsConnected)
{
receiveQueue.Add(dto);
}
break;
}
case nameof(CallRequestDto):
case ShortDtoNames.CallRequest:
{
var dto = deserializer.GetDto <CallRequestDto>();
if (connection.ReceiveAudio && connection.IsConnected)
{
receiveQueue.Add(dto);
}
break;
}
case nameof(CallResponseDto):
case ShortDtoNames.CallResponse:
{
var dto = deserializer.GetDto <CallResponseDto>();
if (connection.ReceiveAudio && connection.IsConnected)
{
receiveQueue.Add(dto);
}
break;
}
case nameof(HeartbeatAckDto):
case ShortDtoNames.HeartbeatAckDto:
connection.LastVoiceServerHeartbeatAckUtc = DateTime.UtcNow;
logger.Trace("Received voice server heartbeat");
break;
}
}
}
catch (SocketException sex)
{
if (connection.IsConnected) //If the socket exception occurs whilst disconnected, it's likely to just be a forced socket closure from doing disconnect().
{
logger.Error(sex);
}
}
catch (Exception ex)
{
logger.Error(ex);
}
logger.Debug(nameof(TaskVoiceServerReceive) + " stopped");
}