unable to get IS_ISI (ISP_ISI) to work

[Krammeh]

Unable to get the insim init packet to work with the new insim version,

connects okay, and can send data. I try and send this

$packet="";
$packet=pack("c", "44");
$packet.=pack("c", "ISP_ISI");
$packet.=pack("c", "1");
$packet.=pack("c", 0);
$packet.=pack("S", $localport);
$packet.=pack("S", "16+32");
$packet.=pack("c", 0);
$packet.=pack("c", 0);
$packet.=pack("c", 0);
$packet.=str_pad($adminPW, 16, "\0");
$packet.=str_pad("LTC Insim", 16, "\0");
fwrite($sender, $packet, strlen($packet));

and, LFS just complains about incorrect packet size, and incorrect byte on first packet.

Using UDP btw.

[filur]

"ISP_ISI" should not go in the packet, you're supposed to send the value of the constant ISP_ISI.

define('ISP_ISI', 1); // 1 - instruction : insim initialise

[Krammeh]

oooh I see.

Thanks :)

[Krammeh]

it still complains about an incorrect packet size.

[Victor]

i wonder if that's correct : $packet.=pack("S", "16+32");

shouldn't that be : $packet.=pack("S", 16+32);

[Krammeh]

even with it as $packet.=pack("S", 16+32);, it still complains :|

[Victor]

$localport = 12345;

$packet = "";
$packet .= pack("c", 44);
$packet .= pack("c", 1);
$packet .= pack("c", 1);
$packet .= pack("c", 0);
$packet .= pack("S", $localport);
$packet .= pack("S", 16+32);
$packet .= pack("c", 0);
$packet .= pack("c", 0);
$packet .= pack("S", 0);
$packet .= str_pad($adminPW, 16, "\0");
$packet .= str_pad("LTC Insim", 16, "\0");

echo strlen ($packet);

you had a CHAR for Interval where it should be a Short, so your packet was 43 bytes instead of 44

[Krammeh]

okay, it connects now. thanks a lot!!!

[Victor]

btw, i think you chould write C's for all your c's too - those bytes should be unsigned (C) instead of signed (c)

[Krammeh]

they are lowercase...?

[Victor]

oops typo in second half of my sentence

[Krammeh]

so it should be C and not c?

[Victor]

yep,

a byte is unsigned. Uppercase C is the unsigned byte (char) indication for the pack() function.

http://nl2.php.net/manual/en/function.pack.php