Brod.Messages.Message.CalculatePayloadLength C# (CSharp) Метод

        public static Int32 CalculatePayloadLength(Int32 messageLength)
        {
            return messageLength - 1 - 4;
        }

        /// <summary>
        /// Message that was correctly read, or null if end of stream found
        /// </summary>
        public Message ReadMessage()
        {
            try
            {
                // If this is the end of stream, return null
                if (_stream.Position == _stream.Length)
                {
                    return(null);
                }

                // Can we read 4 bytes?
                if (_stream.Position + 4 /* size of message length field */ > _stream.Length)
                {
                    return(null);
                }

                // Read 4 bytes that contains message length
                var messageLength = _reader.ReadInt32();

                // If message length less or equlal zero - we probably read all messages
                if (messageLength <= 0)
                {
                    return(null);
                }

                // Can we read messageLength bytes?
                if (_stream.Position + messageLength > _stream.Length)
                {
                    return(null);
                }

                var message = new Message();
                message.Magic   = _reader.ReadByte();
                message.Crc     = _reader.ReadBytes(4);
                message.Payload = _reader.ReadBytes(Message.CalculatePayloadLength(messageLength));

                // Validate message content
                message.Validate();

                return(message);
            }
            catch (EndOfStreamException)
            {
                return(null);
            }
        }