Should we use sized types instead of 'unsigned long' ?

[richsalz]

There are a lot of unsigned long parameters, return values, etc., in the header files. Should we move to sized types? Most of them could just be uint32_t See #15145. We are fixing that because we need more bits, but it might be worth
taking a look at the other API's. Most are probably okay with 32bit. This is similar to the long-wanted int/size_t cleanup, but would only affect 'unsigned long' uses and could be done almost mechanically.

[paulidale]

Flagging this for dicussion.

[h-vetinari]

+1 for explicitly sized ints.

[levitte]

I would do that where it matters... it doesn't always.

[richsalz]

I would do that where it matters... it doesn't always.

Sure. I'd expect to do one PR per header (or maybe related, like all ssl/tls in one)