Timeout a while loop

[agravayne]

Hello All,

 

I have a while loop that reads data from a socket until it reaches a specified teminator. This works but I need to be able to time this out so that if  the terminator is for some reason omitted then the while loop won't wait forever. I have tried adding a incremental counter but this only ever gets up to one - whether it reads or not.

 

Here is my code.

 

while(substr($clients[$i]['Data'], strlen($clients[$i]['Data'])-4, 4)!="TS:\n")
{
   if(false!== ($data = socket_recv($tempsock, $buf,10240,0)));
   {$clients[$i]['Data'].=$buf;}
}

 

Any ideas

Thanks

 

[Mchl]

Try like this:

 

$startTime = time();
$timeout = 60;   //timeout in seconds

while(substr($clients[$i]['Data'], strlen($clients[$i]['Data'])-4, 4)!="TS:\n")
{
   if(time() > $startTime + $timeout) {
     break;
   }

   if(false!== ($data = socket_recv($tempsock, $buf,10240,0)));
   {$clients[$i]['Data'].=$buf;}
   
}

[joel24]

@Mchl... but if the while loop only gets to the first execution and then hangs that won't have any effect...

 

@agravayne...have you've looked at set_time_limit()?

http://php.net/manual/en/function.set-time-limit.php

 

in saying that, it wouldn't end the script gracefully...

 

 

[agravayne]

Hello,

 

I don't actually want to end the script I want the script to move on after a set amount of time. Just want the while loop to timeout.

 

Scott

[Mchl]

Note: The set_time_limit() function and the configuration directive max_execution_time  only affect the execution time of the script itself. Any time spent on activity that happens outside the execution of the script such as system calls using system()' date=' stream operations, database queries, etc. is not included when determining the maximum time that the script has been running. This is not true on Windows where the measured time is real. [/quote']

 

I wonder if socket_recv does count towards this limit. ???

 

[edit]

 

Maybe you should try setting MSG_DONTWAIT flag?

[agravayne]

set_time_limit is for the whole script. I don't want the script to ever timeout -its a socket server and should never die, it shoudl just wait for data on the socket re my loop and if it does not get anything after a set time then just move on.