Fix `socket.max_connections` #1229

Job	Run time
macOS [UBSAN] [lmdb \| clang]	30m 49s
Linux [UBSAN] [lmdb \| clang]	38m 12s
macOS [ASAN] [lmdb \| clang]	27m 38s
Linux [ASAN] [lmdb \| clang]	37m 30s
macOS [TSAN] [lmdb \| clang]	28m 7s
Linux [ASAN_INT] [lmdb \| clang] (Errors Ignored)	39m 2s
macOS [UBSAN] [rocksdb \| clang]	35m 43s
Linux [TSAN] [lmdb \| clang]	38m 33s
macOS [ASAN] [rocksdb \| clang]	38m 59s
Linux [LEAK] [lmdb \| clang] (Errors Ignored)	39m 1s
macOS [TSAN] [rocksdb \| clang]	42m 6s
Linux [UBSAN] [rocksdb \| clang]	47m 36s
Linux [ASAN] [rocksdb \| clang]	50m 31s
Linux [ASAN_INT] [rocksdb \| clang] (Errors Ignored)	53m 59s
Linux [LEAK] [rocksdb \| clang] (Errors Ignored)	52m 13s
	9h 59m 59s

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