cpp http post server support (#1739)

zhaomingwork

2024-05-23 4b388768d0cac2866ddda4cc07e74d8b1d06b65f

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from abc import ABC
from abc import abstractmethod
from typing import Iterator
 
 
class AbsIterFactory(ABC):
    @abstractmethod
    def build_iter(self, epoch: int, shuffle: bool = None) -> Iterator:
        raise NotImplementedError