Lawo.EmberPlusSharp.S101.MessageEncodingStream.CreateAsync C# (CSharp) Method

        internal static async Task<MessageEncodingStream> CreateAsync(
            WriteBuffer rawBuffer, S101Message message, CancellationToken cancellationToken)
        {
            message.PacketFlags =
                PacketFlags.FirstPacket | (message.CanHaveMultiplePackets ? PacketFlags.None : PacketFlags.LastPacket);
            var framingStream = await FramingStream.CreateAsync(rawBuffer, cancellationToken);
            var result = new MessageEncodingStream(message, rawBuffer, framingStream);
            await message.WriteToAsync(result.unframedBuffer, cancellationToken);
            return result;
        }

        private async Task <NonSeekableStream> WriteMessageCoreAsync(
            S101Message message, CancellationToken cancellationToken)
        {
            this.AssertNotDisposed();

            if (message == null)
            {
                throw new ArgumentNullException(nameof(message));
            }

            if ((this.stream != null) && this.stream.CanWrite)
            {
                throw new InvalidOperationException(
                          "DisposeAsync() has not been called on the payload stream of the previous message.");
            }

            this.stream = await MessageEncodingStream.CreateAsync(this.writeBuffer, message, cancellationToken);

            if (!message.CanHavePayload)
            {
                await this.stream.DisposeAsync(cancellationToken);

                this.stream = null;
            }

            return(this.stream);
        }