152 enable reading server pushes in batches #383

Job	Run time
Visual Studio 16 2019 v142 Boost 1.81.0 Release	11m 36s
Visual Studio 17 2022 v142 Boost 1.81.0 Release	11m 56s
posix (gcc, g++-11, g++-11, ubuntu-22.04, -std=c++17)	12m 51s
posix (gcc, g++-11, g++-11, ubuntu-22.04, -std=c++20)	12m 34s
posix (clang, clang++-11, clang-11, ubuntu-22.04, -std=c++17)	5m 42s
posix (clang, clang++-11, clang-11, ubuntu-22.04, -std=c++20)	8m 44s
posix (clang, clang++-13, clang-13, ubuntu-22.04, -std=c++17)	5m 39s
posix (clang, clang++-13, clang-13, ubuntu-22.04, -std=c++20)	6m 1s
posix (clang, clang++-14, clang-14 libc++-14-dev libc++abi-14-dev, ubuntu-22.04, -std=c++17 -stdl...	12m 0s
posix (clang, clang++-14, clang-14 libc++-14-dev libc++abi-14-dev, ubuntu-22.04, -std=c++20 -stdl...	11m 11s
	1h 38m 14s

Provide feedback