From b06abc0df2507f1a617e445595a47bdfc607c402 Mon Sep 17 00:00:00 2001
From: PJ Dietz <pjdietz@gmail.com>
Date: Sun, 17 May 2015 16:29:49 -0400
Subject: [PATCH] Stream checks isSeeakable before calling rewind in __toString

---
 src/Message/Stream.php | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/Message/Stream.php b/src/Message/Stream.php
index 77f944e..4aaa18a 100644
--- a/src/Message/Stream.php
+++ b/src/Message/Stream.php
@@ -48,7 +48,9 @@ class Stream implements StreamInterface
     {
         $string = "";
         try {
-            rewind($this->resource);
+            if ($this->isSeekable()) {
+                rewind($this->resource);
+            }
             $string = $this->getContents();
         } catch (\Exception $e) {
             // Silence exceptions in order to conform with PHP's string casting operations.