Fix #11. Using another way for generating a header (#12)

composer.json

@@ -1,9 +1,11 @@
 {
     "name": "disc/php-zabbix-sender",
-    "version": "1.3.0",
+    "version": "1.3.1",
     "minimum-stability": "stable",
-    "description": "Php implementation of zabbix_sender utility. Works with Zabbix 2.0.8 and 2.1.7+ versions.",
-    "keywords": ["zabbix"],
+    "description": "PHP implementation of zabbix_sender utility. Works with Zabbix 2.0.8, 2.1.7+ and 4.0 versions.",
+    "keywords": [
+        "zabbix"
+    ],
     "type": "library",
     "require": {
         "php": ">=5.3"
@@ -16,11 +18,13 @@
     "license": "MIT",
     "authors": [
         {
-            "name": "disc",
+            "name": "Alexandr Hacicheant",
             "email": "[email protected]"
         }
     ],
     "autoload": {
-        "psr-4": {"Disc\\": "src/"}
+        "psr-4": {
+            "Disc\\": "src/"
+        }
     }
-}
+}

src/Zabbix/Sender.php

@@ -130,8 +130,8 @@ protected function buildRequestBody()
             'request' => 'sender data',
             'data' => $this->getData(),
         ]);
-        
-        return "ZBXD\1" . pack('P', strlen($data)) . $data;
+
+        return "ZBXD\1" . pack('V', strlen($data)) . "\0\0\0\0" . $data;
     }
 
     /**

tests/SenderTest.php

@@ -49,7 +49,7 @@ public function testAddData()
             'request' => 'sender data',
             'data' => [],
         ]);
-        $sender->shouldReceive('sendData')->once()->with("ZBXD\1" . pack('P', strlen($data)) . $data);
+        $sender->shouldReceive('sendData')->once()->with("ZBXD\1" . pack('V', strlen($data)) . "\0\0\0\0" . $data);
 
         $sender->send();
 
@@ -78,7 +78,7 @@ public function testAddData()
                 ],
             ],
         ]);
-        $sender->shouldReceive('sendData')->once()->with("ZBXD\1" . pack('P', strlen($data)) . $data);
+        $sender->shouldReceive('sendData')->once()->with("ZBXD\1" . pack('V', strlen($data)) . "\0\0\0\0" . $data);
         $sender->send();
     }
 
@@ -106,13 +106,13 @@ public function testClearData()
                 ]
             ],
         ]);
-        $sender->shouldReceive('sendData')->once()->with("ZBXD\1" . pack('P', strlen($data)) . $data);
+        $sender->shouldReceive('sendData')->once()->with("ZBXD\1" . pack('V', strlen($data)) . "\0\0\0\0" . $data);
         $sender->send();
         $data = json_encode([
             'request' => 'sender data',
             'data' => [],
         ]);
-        $sender->shouldReceive('sendData')->once()->with("ZBXD\1" . pack('P', strlen($data)) . $data);
+        $sender->shouldReceive('sendData')->once()->with("ZBXD\1" . pack('V', strlen($data)) . "\0\0\0\0" . $data);
         $sender->send();
     }