Npgsql.NpgsqlState.EmptySync C# (CSharp) Method

        public void EmptySync(NpgsqlConnector context)
        {
            Stream stm = context.Stream;
            NpgsqlSync.Default.WriteToStream(stm);
            stm.Flush();
            Queue<int> buffer = new Queue<int>();
            //byte[] compareBuffer = new byte[6];
            int[] messageSought = new int[] {'Z', 0, 0, 0, 5};
            int newByte;
            for (;;)
            {
                switch (newByte = stm.ReadByte())
                {
                    case -1:
                        throw new EndOfStreamException();
                    case 'E':
                    case 'I':
                    case 'T':
                        if (buffer.Count > 4)
                        {
                            bool match = true;
                            int i = 0;
                            foreach (byte cmp in buffer)
                            {
                                if (cmp != messageSought[i++])
                                {
                                    match = false;
                                    break;
                                }
                            }
                            if (match)
                            {
                                return;
                            }
                        }
                        break;
                    default:
                        buffer.Enqueue(newByte);
                        if (buffer.Count > 5)
                        {
                            buffer.Dequeue();
                        }
                        break;
                }
            }
        }