[Haskell-cafe] Fwd: Safe TCP accept loop

Sumit Raja sumitraja at gmail.com
Mon Oct 23 23:08:15 UTC 2017


I sent this to beginners but got no responses so I'm hoping someone
here can help. I’ve looked at
https://wiki.haskell.org/Concurrency_demos/Graceful_exit and used(2)
Using throwTo without the use of block and unblock. It runs on 8.2.1
with my limited testing. I can’t find out much about what the  > 7.x
GHC replacement for block/unblock is other than mask. What does the
unblock do in acceptConnections'?

Does this method of handling an accept loop still need masking of
async exceptions ? If so where does this need to be done?

I've got a version with async running for my specific application
but I don't know if I need to unmask at any point so was hoping for
some guidance.



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