add shouldStop comments

Author: hhxsv5

README.md

@@ -59,7 +59,7 @@ $callback = function () {
  if (empty($news)) {
  return false; // Return false if no new messages
  }
- $shouldStop = false;
+ $shouldStop = false; // Stop if something happens or to clear connection, browser will retry
  if ($shouldStop) {
  throw new StopSSEException();
  }
@@ -92,7 +92,7 @@ public function getNewsStream()
  if (empty($news)) {
  return false; // Return false if no new messages
  }
- $shouldStop = false;
+ $shouldStop = false; // Stop if something happens or to clear connection, browser will retry
  if ($shouldStop) {
  throw new StopSSEException();
  }
@@ -144,7 +144,7 @@ $server->on('Request', function (Request $request, Response $response) use ($ser
  if (empty($news)) {
  return false; // Return false if no new messages
  }
- $shouldStop = false;
+ $shouldStop = false; // Stop if something happens or to clear connection, browser will retry
  if ($shouldStop) {
  throw new StopSSEException();
  }