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

libs/React/Stream/Util.php

@@ -0,0 +1,45 @@
+<?php
+
+namespace React\Stream;
+
+// TODO: move to a trait
+
+class Util
+{
+    public static function pipe(ReadableStreamInterface $source, WritableStreamInterface $dest, array $options = array())
+    {
+        // TODO: use stream_copy_to_stream
+        // it is 4x faster than this
+        // but can lose data under load with no way to recover it
+
+        $dest->emit('pipe', array($source));
+
+        $source->on('data', function ($data) use ($source, $dest) {
+            $feedMore = $dest->write($data);
+
+            if (false === $feedMore) {
+                $source->pause();
+            }
+        });
+
+        $dest->on('drain', function () use ($source) {
+            $source->resume();
+        });
+
+        $end = isset($options['end']) ? $options['end'] : true;
+        if ($end && $source !== $dest) {
+            $source->on('end', function () use ($dest) {
+                $dest->end();
+            });
+        }
+    }
+
+    public static function forwardEvents($source, $target, array $events)
+    {
+        foreach ($events as $event) {
+            $source->on($event, function () use ($event, $target) {
+                $target->emit($event, func_get_args());
+            });
+        }
+    }
+}