added new socket manager, errorhandling and testing is not finished yet

libs/React/Stream/ThroughStream.php

@@ -0,0 +1,33 @@
+<?php
+
+namespace React\Stream;
+
+class ThroughStream extends CompositeStream
+{
+    public function __construct()
+    {
+        $readable = new ReadableStream();
+        $writable = new WritableStream();
+
+        parent::__construct($readable, $writable);
+    }
+
+    public function filter($data)
+    {
+        return $data;
+    }
+
+    public function write($data)
+    {
+        $this->readable->emit('data', array($this->filter($data), $this));
+    }
+
+    public function end($data = null)
+    {
+        if (null !== $data) {
+            $this->readable->emit('data', array($this->filter($data), $this));
+        }
+
+        $this->writable->end($data);
+    }
+}