1 files changed, 43 insertions, 0 deletions
diff --git a/src/messages/Message.php b/src/messages/Message.php
new file mode 100644
index 0000000..df7464e
--- /dev/null
+++ b/src/messages/Message.php
@@ -0,0 +1,43 @@
+<?php
+
+namespace jobd\messages;
+
+
+abstract class Message {
+
+    const REQUEST = 0;
+    const RESPONSE = 1;
+    const PING = 2;
+    const PONG = 3;
+
+    protected $type;
+
+    /**
+     * Message constructor.
+     * @param int $type
+     */
+    public function __construct(int $type)
+    {
+        $this->type = $type;
+    }
+
+    /**
+     * @return array
+     */
+    abstract protected function getContent(): array;
+
+    /**
+     * @return string
+     */
+    public function serialize(): string
+    {
+        $data = [$this->type];
+        $content = $this->getContent();
+
+        if (!empty($content))
+            $data[] = $content;
+
+        return json_encode($data);
+    }
+
+}
+\ No newline at end of file