In 32-bit builds, the number of hexadecimal digits for the chunk header can be reduced to 8

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There is no practical way we could have ended up writing a chunk with a size larger than 2^32-1 on 32-bit machines because we cannot have a buffer with such a size. This presents an optimization opportunity to reduce the number of hexadecimal digits to 8 for writing the chunk header:

http_proto/src/serializer.cpp

Line 56 in 39a71bf

auto p = buf + 16;