| | |
| | | } |
| | | |
| | | private function _checkTcp($host, $port) { |
| | | |
| | | /* Try to open a connection */ |
| | | $fp = @fsockopen($host, $port, $errno, $errstr, 2); |
| | | |
| | | if ($fp) { |
| | | /* |
| | | * We got a connection, but maybe apache is not able to send data over this |
| | | * connection? |
| | | * We got a connection, this means, everything is O.K. |
| | | * But maybe we are able to do more deep testing? |
| | | */ |
| | | if ($port == 80) { |
| | | /* |
| | | * Port 80 means, testing APACHE |
| | | * So we can do a deepter test and try to get data over this connection. |
| | | * (if apache hangs, we get a connection but a timeout by trying to GET the data!) |
| | | */ |
| | | fwrite($fp, "GET / HTTP/1.0\r\n\r\n"); |
| | | stream_set_timeout($fp, 2); |
| | | $res = fread($fp, 10); |
| | | stream_set_timeout($fp, 5); // Timeout after 5 seconds |
| | | $res = fread($fp, 10); // try to get 10 bytes (enough to test!) |
| | | $info = stream_get_meta_data($fp); |
| | | fclose($fp); |
| | | if ($info['timed_out']) { |
| | | return false; // Apache was not able to send data over this connection |
| | | } else { |
| | | return true; // Apache was able to send data over this connection |
| | | } |
| | | } |
| | | |
| | | /* The connection is no longer needed */ |
| | | fclose($fp); |
| | | /* We are able to establish a connection */ |
| | | return true; |
| | | } else { |
| | | return false; // Apache was not able to establish a connection |
| | | /* We are NOT able to establish a connection */ |
| | | return false; |
| | | } |
| | | } |
| | | |
| | |
| | | } |
| | | } |
| | | |
| | | /* |
| | | /** |
| | | * Set the state to the given level (or higher, but not lesser). |
| | | * * If the actual state is critical and you call the method with ok, |
| | | * then the state is critical. |
| | |
| | | * * If the actual state is critical and you call the method with error, |
| | | * then the state is error. |
| | | */ |
| | | private function _setState($oldState, $newState) |
| | | { |
| | | private function _setState($oldState, $newState) { |
| | | /* |
| | | * Calculate the weight of the old state |
| | | */ |
| | |
| | | */ |
| | | if ($newInt > $oldInt){ |
| | | return $newState; |
| | | } |
| | | else |
| | | { |
| | | } else { |
| | | return $oldState; |
| | | } |
| | | } |