3 files changed, 16 insertions, 2 deletions
diff --git a/vendor/sabre/http/CHANGELOG.md b/vendor/sabre/http/CHANGELOG.md
index 63d85afe3..00be2d887 100644
--- a/vendor/sabre/http/CHANGELOG.md
+++ b/vendor/sabre/http/CHANGELOG.md
@@ -1,6 +1,12 @@
 ChangeLog
 =========
 
+4.2.3 (2017-06-12)
+------------------
+
+* #74, #77: Work around 4GB file size limit at 32 Bit systems
+
+
 4.2.2 (2017-01-02)
 ------------------
 
diff --git a/vendor/sabre/http/lib/Sapi.php b/vendor/sabre/http/lib/Sapi.php
index 6c83c8719..6fc6452e4 100644
--- a/vendor/sabre/http/lib/Sapi.php
+++ b/vendor/sabre/http/lib/Sapi.php
@@ -75,7 +75,15 @@ class Sapi {
         if ($contentLength !== null) {
             $output = fopen('php://output', 'wb');
             if (is_resource($body) && get_resource_type($body) == 'stream') {
-                stream_copy_to_stream($body, $output, $contentLength);
+                if (PHP_INT_SIZE !== 4){
+                    // use the dedicated function on 64 Bit systems
+                    stream_copy_to_stream($body, $output, $contentLength);  
+                } else {
+                    // workaround for 32 Bit systems to avoid stream_copy_to_stream
+                    while (!feof($body)) {
+                        fwrite($output, fread($body, 8192));    
+                    }   
+                }
             } else {
                 fwrite($output, $body, $contentLength);
             }
diff --git a/vendor/sabre/http/lib/Version.php b/vendor/sabre/http/lib/Version.php
index a5a427405..aeb080e93 100644
--- a/vendor/sabre/http/lib/Version.php
+++ b/vendor/sabre/http/lib/Version.php
@@ -14,6 +14,6 @@ class Version {
     /**
      * Full version number
      */
-    const VERSION = '4.2.2';
+    const VERSION = '4.2.3';
 
 }