public async Task Send(byte[] data)
{
await Task.Yield();
using (var memoryStream = new MemoryStream())
{
using (var binaryWriter = new BinaryWriter(memoryStream))
{
binaryWriter.Write((long)0);
binaryWriter.Write(GetNewMessageId());
binaryWriter.Write(data.Length);
binaryWriter.Write(data);
byte[] packet = memoryStream.ToArray();
_transport.Send(packet);
}
}
}
public async Task Send(byte[] packet, MTProtoRequest request)
{
await Task.Yield();
request.MessageId = _session.GetNewMessageId();
byte[] msgKey;
byte[] ciphertext;
using (MemoryStream plaintextPacket = makeMemory(8 + 8 + 8 + 4 + 4 + packet.Length))
{
using (BinaryWriter plaintextWriter = new BinaryWriter(plaintextPacket))
{
plaintextWriter.Write(_session.Salt);
plaintextWriter.Write(_session.Id);
plaintextWriter.Write(request.MessageId);
plaintextWriter.Write(GenerateSequence(request.Confirmed));
plaintextWriter.Write(packet.Length);
plaintextWriter.Write(packet);
msgKey = Helpers.CalcMsgKey(plaintextPacket.GetBuffer());
ciphertext = AES.EncryptAES(Helpers.CalcKey(_session.AuthKey.Data, msgKey, true), plaintextPacket.GetBuffer());
}
}
using (MemoryStream ciphertextPacket = makeMemory(8 + 16 + ciphertext.Length))
{
using (BinaryWriter writer = new BinaryWriter(ciphertextPacket))
{
writer.Write(_session.AuthKey.Id);
writer.Write(msgKey);
writer.Write(ciphertext);
_transport.Send(ciphertextPacket.GetBuffer());
}
}
}