recvfrom() not a thread cancellation point

[Niall Douglas]

Hi,

How do I receive UDP packets using recvfrom() when it would seem that 
recvfrom() is not a thread cancellation point on FreeBSD 6.0?

Is there an alternative method of receiving UDP packets which is 
thread cancellable? The best I can see is using plain read() but this 
of course won't return the sender of the UDP packet.

Cheers,
Niall