1 files changed, 9 insertions, 1 deletions
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);
             }