How to optimize number of threads needed

Question

I am building an UDP port scanner in C. This is a scheme of the code

Create Socket
Structure raw UDP packet with port i 
Send packet and wait n miliseconds for reply

I need to perform those tasks X times, depending on the number of ports to be scanned. It may be up to 65535 times.

My goal is to optimize resources, considering an i386 machine running under a 3.5.0-17-generic Linux kernel.

Thanks for your attention.

using the term pseudo-code quite loosely I see. – Andro May 27 '14 at 21:09 — Andro, May 27 '14 at 21:09

score 1 · Answer 1 · answered May 27 '14 at 21:13

1

One thread, using select, epoll or similar.
All of them. Remember to rate limit since that doesn't happen automatically with UDP.

answered May 27 '14 at 21:13

that other guy

1

These kids learn too much java these days that they want to solve all the problems with threads :( – Steffen Ullrich May 27 '14 at 21:32

1 Answers1