sockets stop connecting after 100 attempts

[tehcrasx]

Hey all,

I have a php application that connects to a server to get information but the server changes ports sometimes over a range. I need to be able to scan that range and find the port fairly quick. However after 100 checks php stops executing. Why is that?

code:

 

 

error_reporting(1);

$port=0;

$ip="192.168.1.66";

for($i=11100;$i<11999;$i++){

try{

$handle = socket_create(AF_INET,SOCK_DGRAM, SOL_UDP);

if (!@socket_connect($handle,$ip,$i)) {

throw new Exception( "$errno : $errstr <br/>");

}else{

socket_write($handle, "\\status\\");

if(!socket_read($handle, "2048")){

socket_close($handle);

socket_clear_error($handle);

throw new Exception("");}

$port=$i;

 

break;

}

}catch(Exception $e){

echo "not $i<br />";

echo $e->getMessage();

flush();

}

}

echo "<br />$port<br />";

[bobbinsbro]

i may be wrong, but i think the script simply times out. port scanning is sloooow.

[tehcrasx]

i may be wrong, but i think the script simply times out. port scanning is sloooow.

it only takes <1 second to check 100 ports

[bobbinsbro]