View topic - Short downtime this morning - Windows, Apple, Application, Abandonware and Game Beta Downloads/Repository

Andy

Hello all,

There was a short downtime this morning of around 4 hours, when one of the crons failed to correctly run, causing the bandwidth stats to stop working. This caused a site-wide error causing each page load to take up to 5 minutes to complete. It only affected BetaArchive and none of the other websites hosted on the server.

Because of this error I have now implemented a fix. The fix checks to see if the stats are available before attempting to include the information into the script from the external http server the stats run from. If it was unavailable, it would cause a hang until the connection timed out. Now it waits no longer than 1 second before timing out, allowing the page to continue loading regardless.

Here is quick example of the fix code which may help anyone with a similar problem.

Code:

function isalive($port) { 
  if (!is_numeric($port)) return false; 
    $socket = @fsockopen("127.0.0.1:81", $port, $errno, $errstr, 1);
  if (!$socket) 
     return false; 
  else { 
    fclose($socket); 
    return true; 
  }
  }

if (isalive(80)){  
   $bandwidth = @file_get_contents("http://127.0.0.1:81/bandwidth.txt"));
} else{ echo(""); }

Andy (Admin)

monkey56657

I was asleep till 2pm so no big problem for me

However may I suggest this shortened code. It only makes one request to 127.0.0.1 .. rather than testing then downloading.

Code:

ini_set('default_socket_timeout', '1');

$bandwidth = @file_get_contents('http://127.0.0.1:81/bandwidth.txt');

// do whatever with $bandwidth or nothing if it's empty

Andy

I tried that, it doesn't work, or I'd use that method. I explored it in the past. Something to do with php itself ignoring the ini change. Don't ask, lol.

monkey56657

Then the next best thing..

Code:

function get_bandwidth()
{
    $socket = @fsockopen("127.0.0.1", 81, $errno, $errstr, 1);

    if (!$socket) { return; }

    $headers  = "GET /bandwidth.txt HTTP/1.1\r\n";
    $headers .= "Host: 127.0.0.1\r\n";
    $headers .= "Connection: Close\r\n\r\n";

    $bandwidth = "";

    fwrite($socket, $headers);

    while (!feof($socket)) 
    {
        $bandwidth .= fgets($socket);
    }

    fclose($socket);

    // strip the http headers from the output
    $bandwidth = substr($bandwidth, (strpos($bandwidth, "\r\n\r\n") + 4));

    return $bandwidth;
}

$bandwidth = get_bandwidth();

// do whatever with $bandwidth or nothing if it's empty

Also I take it you are using port 81.. and the passing of port 80 on your first post is by mistake?

Andy

Actually I'm using neither port. I changed the entire example to use fake information, since it was just an example. I'd also rather people didn't know the actual url

Anyway, the script uses your caching code, so it only requests it once every 5 seconds maximum anyway

monkey56657

Still your example connects, disconnects the connects again to download

Andy

monkey56657 wrote:

Still your example connects, disconnects the connects again to download

Very true, but either way once every 5 seconds is hardly going to do any damage.

Short downtime this morning

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