Rework tcp_server handshake visitor #1009

Job	Run time
macOS [UBSAN] [lmdb \| clang]	31m 32s
Linux [UBSAN] [lmdb \| clang]	40m 3s
macOS [ASAN] [lmdb \| clang]	22m 18s
Linux [ASAN] [lmdb \| clang]	31m 13s
macOS [TSAN] [lmdb \| clang] (Errors Ignored)	25m 47s
macOS [UBSAN] [rocksdb \| clang]	37m 4s
macOS [ASAN] [rocksdb \| clang]	29m 53s
Linux [ASAN_INT] [lmdb \| clang] (Errors Ignored)	15m 52s
Linux [TSAN] [lmdb \| clang] (Errors Ignored)	15m 32s
macOS [TSAN] [rocksdb \| clang] (Errors Ignored)	34m 13s
Linux [LEAK] [lmdb \| clang] (Errors Ignored)	32m 11s
Linux [UBSAN] [rocksdb \| clang]	35m 23s
Linux [ASAN] [rocksdb \| clang]	24m 50s
Linux [ASAN_INT] [rocksdb \| clang] (Errors Ignored)	39m 35s
Linux [TSAN] [rocksdb \| clang] (Errors Ignored)	13m 55s
Linux [LEAK] [rocksdb \| clang] (Errors Ignored)	33m 33s
	7h 42m 54s

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