private void ReceiveVoice()
{
if (client.Available > 0)
{
byte[] packet, buffer = null, nonce = null, result;
packet = client.Receive(ref endpoint);
int packetLength, resultLength;
buffer = new byte[4000];
nonce = new byte[24];
packetLength = packet.Length;
if (packet.Length > 0)
{
if (packetLength < 12)
{
return;
}
if (packet[0] != 0x80)
{
return;
}
if (packet[1] != 0x78)
{
return;
}
ushort sequenceNumber = (ushort)((packet[2] << 8) | packet[3] << 0);
uint timDocuestamp = (uint)((packet[4] << 24) | packet[5] << 16 | packet[6] << 8 | packet[7] << 0);
uint ssrc = (uint)((packet[8] << 24) | (packet[9] << 16) | (packet[10] << 8) | (packet[11] << 0));
if (packetLength < 28)
{
return;
}
Buffer.BlockCopy(packet, 0, nonce, 0, 12);
var length = Convert.ToUInt64(packetLength - 12);
int returnValue = SecretBox.Decrypt(packet, length, buffer, nonce, key);
if (returnValue != 0)
{
return;
}
result = buffer;
resultLength = packetLength - 28;
if (users.ContainsValue(ssrc))
{
byte[] output = new byte[1920];
decoder.DecodeFrame(result, 0, resultLength, output);
float[] outputFloat = Utils.BytesToFloats(output);
parent.unityInvoker.Enqueue(() => OnVoicePacketReceived(this, new DiscordVoiceArgs()
{
channel = channel, client = parent, packet = output, unitypacket = outputFloat, raw = result, sender = GetUserBySsrc(ssrc)
}));
}
}
}
}
private void SendVoice()
{
byte[] buffer = voiceToSend.Dequeue();
if (buffer != null)
{
System.Diagnostics.Stopwatch timeToSend = System.Diagnostics.Stopwatch.StartNew();
byte[] packet = new byte[4028];
byte[] nonce = new byte[24];
packet[0] = (byte)0x80;
packet[1] = (byte)0x78;
packet[8] = (byte)(ssrc >> 24);
packet[9] = (byte)(ssrc >> 16);
packet[10] = (byte)(ssrc >> 8);
packet[11] = (byte)(ssrc >> 0);
sequence = unchecked (sequence++);
packet[2] = (byte)(sequence >> 8);
packet[3] = (byte)(sequence >> 0);
packet[4] = (byte)(timestamp >> 24);
packet[5] = (byte)(timestamp >> 16);
packet[6] = (byte)(timestamp >> 8);
packet[7] = (byte)(timestamp >> 0);
byte[] opusVoice = new byte[buffer.Length];
int encodedLength = encoder.EncodeFrame(buffer, 0, opusVoice);
Buffer.BlockCopy(packet, 0, nonce, 0, 12);
int returnVal = SecretBox.Encrypt(opusVoice, encodedLength, packet, nonce, key);
if (returnVal != 0)
{
return;
}
if (opusVoice == null)
{
Debug.LogError("opusVoice");
}
int dataSent = client.Send(packet, encodedLength + 28);
timestamp = unchecked (timestamp + (uint)encoder.SamplesPerFrame);
float[] inputFloat = Utils.BytesToFloats(buffer);
parent.unityInvoker.Enqueue(() => OnVoicePacketSend(this, new DiscordVoiceArgs()
{
channel = channel, client = parent, packet = packet, unitypacket = inputFloat, raw = buffer, sender = parent.user
}));
timeToSend.Stop();
if (timeToSend.ElapsedMilliseconds > 0)
{
Thread.Sleep(20 - (int)timeToSend.ElapsedMilliseconds);
}
else
{
Thread.Sleep(20);
}
}
else
{
byte[] empty = new byte[3] {
(byte)0xF8, (byte)0xFF, (byte)0xFE
};
client.Send(empty, empty.Length);
}
}