UDP broadcast using CFSocket on IOS

Question

Have been doing some google search and some reading on this subject but cannot seem to get it right no matter how much time i spent searching.

What i want to do is

Answer 1

remove SetAdress and all will be work fine. i've tested this now;

Answer 2

How about use this initialization with address

CFDataRef address=CFDataCreate(kCFAllocatorDefault,(UInt8 *)&addr,sizeof(addr));