public function check()
{
if ($this->start === 0) {
$this->start = time();
}
if (SSEUtils::time_mod($this->start, $this->period) == 0) {
return true;
} else {
return false;
}
}
public function start()
{
@set_time_limit(0);
//disable time limit
//send the proper header
header('Content-Type: text/event-stream');
header('Cache-Control: no-cache');
if ($this->allow_cors) {
header('Access-Control-Allow-Origin: *');
header('Access-Control-Allow-Credentials: true');
}
if ($this->use_chunked_encoding) {
header('Transfer-encoding: chunked');
}
//prevent buffering
if (function_exists('apache_setenv')) {
@apache_setenv('no-gzip', 1);
}
@ini_set('zlib.output_compression', 0);
@ini_set('implicit_flush', 1);
while (ob_get_level() != 0) {
ob_end_flush();
}
ob_implicit_flush(1);
$start = time();
//record start time
echo 'retry: ' . $this->client_reconnect * 1000 . "\n";
//set the retry interval for the client
//keep the script running
while (true) {
if (SSEUtils::time_mod($start, $this->keep_alive_time) == 0) {
//No updates needed, send a comment to keep the connection alive.
//From https://developer.mozilla.org/en-US/docs/Server-sent_events/Using_server-sent_events
echo ': ' . sha1(mt_rand()) . "\n\n";
}
//start to check for updates
foreach ($this->_handlers as $event => $handler) {
if ($handler->check()) {
//check if the data is avaliable
$data = $handler->update();
//get the data
$this->id++;
SSEUtils::sseBlock($this->id, $event, $data);
//make sure the data has been sent to the client
@ob_flush();
@flush();
} else {
continue;
}
}
//break if the time excceed the limit
if ($this->exec_limit != 0 && SSEUtils::time_diff($start) > $this->exec_limit) {
break;
}
//sleep
usleep($this->sleep_time * 1000000);
}
}
}
*/
while (true) {
// usleep($_sleep_time * 1000000);
// printf ('data: {"op" : "setOwnerSignature", "time" : "%s"}' . "\n\n", date('d/m H:i:s'));
//print 'data: {"opid" : "approved"}' . PHP_EOL . PHP_EOL;
//ob_flush();
//flush();
//if (false) {
if ($ob = check_global()) {
//error_log($ob . PHP_EOL, 3, "error.log");
//set_global(0);
//error_log("Cycle: " . date('d/m H:i:s') . " --- " . session_id() . PHP_EOL, 3, "error.log");
send($ob);
} else {
if (SSEUtils::time_mod($_start, $_keep_alive_time) == 0) {
//error_log(date('d/m H:i:s'), 3, "error.log");
//error_log((time() - $_start) . PHP_EOL, 3, "error.log");
//error_log($_start . PHP_EOL, 3, "error.log");
//No updates needed, send a comment to keep the connection alive.
//From https://developer.mozilla.org/en-US/docs/Server-sent_events/Using_server-sent_events
echo ': ' . sha1(mt_rand()) . "\n\n";
ob_flush();
flush();
}
}
usleep($_sleep_time * 1000000);
}
class SSEUtils
{
/*
