[erlang-questions] How does Erlang TCP determine the end of a TCP stream?

[Eric des Courtis]

Depends on the data and what you are doing with it. If it's say a video
over a gigantic P2P network then yes I would agree but then you might want
something like SHA256 or SHA3 as your checksum.

On Tue, Oct 31, 2017 at 7:31 PM, scott ribe <scott_ribe@REDACTED>
wrote:

> On Oct 31, 2017, at 5:05 PM, Eric des Courtis <eric.des.courtis@REDACTED>
> wrote:
> >
> > I think this is probably unnecessary since an implementation for
> something like {packet,4} is trivial to begin with so you will likely never
> see an issue with it. Not to mention UDP and TCP both have checksums
> checked by the OS anyway.
>
> As I pointed out, you can have a bug on the sending end as well. And the
> TCP checksum is extremely weak, basically just sum of words--that's fine
> until you have a terribly noisy corrupt transport...
>
> So yes, in a lot of circumstances it's overkill, but I prefer to be
> paranoid when a network is involved.
>
> --
> Scott Ribe
> https://www.linkedin.com/in/scottribe/
> (303) 722-0567
>
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