Trouble with socket_select

Hi, I am using PHP 4.2.1 under Windows XP. I am having trouble getting socket_select to work on a UDP socket. Here is my code: //Create socket $socket = socket_create(AF_INET, SOCK_DGRAM, 0); if ($socket < 0) echo "unable to create socket(".socket_strerror($socket); else echo "OK"; //enable broadcasts socket_setopt($socket, SOL_SOCKET, SO_BROADCAST, 1); //first, a UDP broadcast command goes out //I have verified with EtherPeek that this is indeed going out if (socket_sendto($socket,$packet,$size,0,$IPBroadcast,$TCPIQPort) != $size) echo "failed"; else echo "OK"; //now call socket_select repeatedly for five seconds $endtime = Time() + 5; while (Time() < $endtime) { $r = array($socket); if (socket_select($r, $w=null, $e=null, 0) > 0) { echo "\n<P>readable"; if (socket_recvfrom($socket, $buffer, 2048, 0, $addr, $port)) echo "\n<P>$buffer"; } } I never see $socket being readable, i.e. a return value from socket_select greater than 0. I also can see in EtherPeek that UDP packets are being sent back to this socket in response to the broadcast. Any help would be appreciated. --Bruce -- Bruce Vander Werf brucev@cyberlink.com