Add ResponseDownload::isConnectionStatusNormal method

Author: natanfelles

src/ResponseDownload.php

@@ -311,7 +311,7 @@ private function readBuffer(int $firstByte, int $lastByte) : void
             $bytesRead = $bytesLeft > $this->readLength ? $this->readLength : $bytesLeft;
             $bytesLeft -= $bytesRead;
             $this->flush($bytesRead);
-            if (\connection_status() !== \CONNECTION_NORMAL) {
+            if (!$this->isConnectionStatusNormal()) {
                 break;
             }
         }
@@ -335,12 +335,17 @@ private function readFile() : void
     {
         while (!\feof($this->handle)) {
             $this->flush($this->readLength);
-            if (\connection_status() !== \CONNECTION_NORMAL) {
+            if (!$this->isConnectionStatusNormal()) {
                 break;
             }
         }
     }
 
+    private function isConnectionStatusNormal() : bool
+    {
+        return \connection_status() === \CONNECTION_NORMAL;
+    }
+
     /**
      * Tell if Response has a downloadable file.
      *