Telnet using PHP Sockets - 500 Internal Server Error

[sjwspud]

I have a very annoying problem when using sockets in PHP to telnet into a remote server. I am wanting to run commands on a remote server, then get the output from the commands, parse the info, and save it to MySQL. Now I am able to do so running a few commands. But when I loop through to do multiple commands, I get a 500 internal server error. Using PHP 5.2.6 and IIS 6. Below is my code that I am using. I tried setting the timeout to 15 minutes (900 seconds), and it still gives me the 500 error. I am completely clueless now on how to get this to work.

 

while ($rc = $db->db_object($rs)){
// Open our socket, we will open and close for each command...
$fp = pfsockopen($telnet_server,23,$errno,$errstr,$timeout);

// Login...
fputs($fp, $header1);
sleep(1);
fputs($fp, $header2);
sleep(1);
fputs($fp, "$telnet_username\r");
sleep(1);
fputs($fp, "$telnet_password\r");
sleep(3);
fputs($fp, "$command1\r");
sleep(1);
fputs($fp, "$command2\r");
sleep(1);
fputs($fp, "$command3\r");
sleep(1);
fputs($fp, "$command4\r");
sleep(1);
fputs($fp, "$command5\r");
sleep(1);
fputs($fp, "$command6\r");
sleep(1);
fputs($fp, "exit\r");
sleep(1);

// Grab the command output...
$read = fread($fp, 128);
$pos = socket_get_status($fp);
$read = fread($fp,$pos["unread_bytes"]);
$read = str_replace("\n","<br>",$read);
$explode = explode("\"",$read);

// Close the socket connection...
fclose($fp);

 

In the code above, I am looping through all records in my database. I am running 6 different commands each time I loop. Below is what I am sending for headers - aka - $header1 and $header2

 

$header1 = chr(0xFF).chr(0xFB).chr(0x1F).chr(0xFF).chr(0xFB).chr(0x20).chr(0xFF).chr(0xFB).chr(0x18).chr(0xFF).chr(0xFB).chr(0x27).chr(0xFF).chr(0xFD).chr(0x01).chr(0xFF).chr(0xFB).chr(0x03).chr(0xFF).chr(0xFD).chr(0x03).chr(0xFF).chr(0xFC).chr(0x23).chr(0xFF).chr(0xFC).chr(0x24).chr(0xFF).chr(0xFA).chr(0x1F).chr(0x00).chr(0x50).chr(0x00).chr(0x18).chr(0xFF).chr(0xF0).chr(0xFF).chr(0xFA).chr(0x20).chr(0x00).chr(0x33).chr(0x38).chr(0x34).chr(0x30).chr(0x30).chr(0x2C).chr(0x33).chr(0x38).chr(0x34).chr(0x30).chr(0x30).chr(0xFF).chr(0xF0).chr(0xFF).chr(0xFA).chr(0x27).chr(0x00).chr(0xFF).chr(0xF0).chr(0xFF).chr(0xFA).chr(0x18).chr(0x00).chr(0x58).chr(0x54).chr(0x45).chr(0x52).chr(0x4D).chr(0xFF).chr(0xF0);
$header2 = chr(0xFF).chr(0xFC).chr(0x01).chr(0xFF).chr(0xFC).chr(0x22).chr(0xFF).chr(0xFE).chr(0x05).chr(0xFF).chr(0xFC).chr(0x21);

 

Please help me out with this issue. I would really appreciate it. I have been pulling my hair out to get this working.

[btherl]

Can you create a log file in order to find the exact line where the error is occurring?  I assume you have display_errors set on already.

 

Have you tried running the code for a single db result only, rather than for all in one script run?

[sjwspud]

I have tried running a single db result, and it works perfectly. But when I loop through multiple records, it ends of having a 500 error.

 

I didn't have display errors on before hehe, but I turned it on and this is what it gave me...

 

Fatal error: Maximum execution time of 30 seconds exceeded in C:\Inetpub\wwwroot\amrt\sources\class_index.php on line 321

 

I tried ini_set("maximum_execution_time","300"); and still get the same error. I am wondering what I need to set to change the execution time from 30 seconds to at least 300 seconds.

[sjwspud]

I wanted to let you all know I fixed this issue.

 

What you have to do to up the execution time is to do the following command...

 

set_time_limit(valuehere);

 

I set it to 300, and the script never caused a fatal error afterwards. Just wanted to post this in case anyone else were to run into it.