Microsoft.AspNet.Server.Kestrel.Infrastructure.MemoryPoolIterator2.Peek C# (CSharp) Method

        public int Peek()
        {
            if (_block == null)
            {
                return -1;
            }
            else if (_index < _block.End)
            {
                return _block.Array[_index];
            }
            else if (_block.Next == null)
            {
                return -1;
            }

            var block = _block.Next;
            var index = block.Start;
            while (true)
            {
                if (index < block.End)
                {
                    return block.Array[index];
                }
                else if (block.Next == null)
                {
                    return -1;
                }
                else
                {
                    block = block.Next;
                    index = block.Start;
                }
            }
        }