Re: Subject: UDP packet

Since you are getting some data back from the server when connecting in this manner, everything seems to be okay. However - remember that UDP is a connectionless protocol (unlike TCP which has a form of packet accounting), you may not *necessarily* get all the packets delivered which may impact finding an EOF sequence. You may need to set a socket timeout value (use socket_set_timeout() or stream_set_timeout() with something reasonable, say 1 second) which continues the script if no more data is being received. Read more about this here : http://www.php.net/manual/en/function.fsockopen.php and http://www.php.net/manual/en/function.socket-set-timeout.php I have also verified that some versions of PHP (<4.2) will hang up a script (up to the script timeout) if a packet request is blocked by a firewall on the other end. You can read more about this in a bug report submitted in February. http://bugs.php.net/bug.php?id=15639 Hope it works out. Regards, Neil Smith. At 08:04 02/01/2003 +0000, you wrote:

Message-ID: <20030101163349.4822.qmail@pb1.pair.com> To: php-windows@lists.php.net Reply-To: "Torben Dehn" <news@dehn.net> From: "Torben Dehn" <news@dehn.net> Date: Wed, 1 Jan 2003 17:34:05 +0100 Subject: UDP packet Hello ! I am very new to PHP so please don't laugh if my code really sucks ;=) What i am trying to do is : 1) Opening an UDP connectión to a server (That works allright) 2) Making a query to the server (That works allright) 3) Recieve an unknow number of UDP packets with an unknown packet size (This is my problem) I don't know the packet size and i don't know how many packets the server will return... Take a look at the WHILE loop because thats where it "hangs". If i remove the WHILE loop and just make a fread($socket,1024) it will return some data. My questions are as follow : 1) How can i make sure that ALL data has been recieved ? 2) Is it possible to read each UDP packet into it's own variable (array) ??? I would be very happy if someone could answer one or all question. <?

$ip      = "192.246.40.65";
$port    = 27950;

$command = "ÿÿÿÿgetservers 60 empty full";

$data    = '';

Echo "Connecting to Master Server : $ip:$port<br>"; $socket = fsockopen("udp://$ip",$port,$errno,$errstr,2); if (!$socket) { echo "There was an error connecting to the Master Server<br>"; echo "Error returned was : $errorno and $errostr"; exit; } //Socket error else { echo "Connection established ..<br>"; If (!fwrite($socket,$command)) {

    echo "There was an error querying the master server ..";
    exit;

} //Fwrite error echo "Query complete ..<br>"; while (!feof($socket)) {

    echo "Reading data ..<br>";
    $data .= fread($socket,4096);

} //End of read section echo "$data<br>"; fclose($socket); echo "Connection closed ..<br>"; } //End of main loop ?>