Compiling on FreeBSD

[stacksmith]

To make it work on FreeBSD,

• cc instead of gcc;
• add 2 headers:

#include <sys/socket.h>
#include <netinet/in.h>

• fix the memcpy bug on line 70 (see the issue)

[ir33k]

Hmm, ok but how to add 2 extra lines and not go over 100 lines limit?

[ir33k]

There is single empty line that can be removed. But we need one more.
Anyway you are free to open Pull Request with those changes.
If you manage to make it without going over 100 lines then I will merge it for sure.