Added __toString fn to DataInterface

src/Messaging/Protocol/DataInterface.php

@@ -25,4 +25,10 @@ interface DataInterface {
      * @return string
      */
     function getContents();
+
+    /**
+     * Should return the unmasked payload received from peer
+     * @return string
+     */
+    function __toString();
 }

src/Messaging/Protocol/Frame.php

@@ -429,13 +429,7 @@ class Frame implements FrameInterface {
             throw call_user_func($this->ufeg, 'Can not return partial message');
         }
 
-        $payload = substr($this->data, $this->getPayloadStartingByte(), $this->getPayloadLength());
-
-        if ($this->isMasked()) {
-            $payload = $this->applyMask($this->getMaskingKey(), $payload);
-        }
-
-        return $payload;
+        return $this->__toString();
     }
 
     /**
@@ -446,6 +440,16 @@ class Frame implements FrameInterface {
         return substr($this->data, 0, $this->getPayloadStartingByte() + $this->getPayloadLength());
     }
 
+    public function __toString() {
+        $payload = (string)substr($this->data, $this->getPayloadStartingByte(), $this->getPayloadLength());
+
+        if ($this->isMasked()) {
+            $payload = $this->applyMask($this->getMaskingKey(), $payload);
+        }
+
+        return $payload;
+    }
+
     /**
      * Sometimes clients will concatenate more than one frame over the wire
      * This method will take the extra bytes off the end and return them

src/Messaging/Protocol/Message.php

@@ -78,13 +78,7 @@ class Message implements \IteratorAggregate, MessageInterface {
             throw new \UnderflowException('Message has not been put back together yet');
         }
 
-        $buffer = '';
-
-        foreach ($this->_frames as $frame) {
-            $buffer .= $frame->getPayload();
-        }
-
-        return $buffer;
+        return $this->__toString();
     }
 
     /**
@@ -104,6 +98,16 @@ class Message implements \IteratorAggregate, MessageInterface {
         return $buffer;
     }
 
+    public function __toString() {
+        $buffer = '';
+
+        foreach ($this->_frames as $frame) {
+            $buffer .= $frame->getPayload();
+        }
+
+        return $buffer;
+    }
+
     /**
      * @return boolean
      */