Feature Request: Support FreeBSD

[dlrobertson]

The examples currently fail on FreeBSD. Haven't had the chance to investigate this further.

errno is EINVAL. I suspect it is the same problem I faced when porting ipc-channel to FreeBSD.

[l0kod]

I didn't test with FreeBSD but only Linux. There is runtime checks to validate the received struct length.

It's probably the padding in Cmsghdr. I don't have any FreeBSD but I'll be glad to take a pull request. :)