Crash on OSX

[benichmt1]

Installed with Homebrew, upon running I get the following error:

thread 'main' panicked at 'Too many open files. Please reduce batch size. The default is 5000. Try -B 2500.', src/main.rs:179:21
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace```

I'm on 10.15.5.

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[Rackme]

Copy of #25

[bee-san]

Yup! @Rackme is right. Reducing your batch count will help :)

[bee-san]

Basically, your OS can only open so many connections before it crashes. I believe Mac OS is 254. You can see how to increase that using #25 and #21 for more info :)

TL;DR rustscan -b 254 but this will be very slow, you may want to increase the limit see #21 for more info.

[benichmt1]

I tried rustcan -b 254 as suggested but still get the same error.

[bee-san]

Hey! Run these 3 commands for me:

ulimit -a
ulimit -Hn
ulimit -Sn

And tell me what they output? They will show what the maximum number of open file descriptors is :)

[benichmt1]

-n: file descriptors 256

[benichmt1]

Looks like 250 works, not 254.

[fuomag9]

Same issue on WSL2, see #39