Description:
------------
If a cURL handle which has a CURLFile attached as post field is
copied via curl_copy_handle(), the file upload can only succeed
the first time it is executed; subsequent executions of the handle
copies will upload an empty file.

The problem is that the current implementation of request #77711
opens the stream and attaches it to the cURL handle; on the first
upload the stream is completely read, but not rewound afterwards
(what is not generally possible, anyway), so subsequent uploads
only see an empty stream.


Test script:
---------------
Apply the following patch:

 ext/curl/tests/responder/get.inc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ext/curl/tests/responder/get.inc b/ext/curl/tests/responder/get.inc
index f9269745f6..64ab267d50 100644
--- a/ext/curl/tests/responder/get.inc
+++ b/ext/curl/tests/responder/get.inc
@@ -28,7 +28,7 @@
       break;
     case 'file':
       if (isset($_FILES['file'])) {
-          echo $_FILES['file']['name'] . '|' . $_FILES['file']['type'];
+          echo $_FILES['file']['name'] . '|' . $_FILES['file']['type'] . '|' . $_FILES['file']['size'];
       }
       break;
     case 'method':

And run ext/curl/tests/curl_copy_handle_variation3.phpt


Expected result:
----------------
bool(true)
string(37) "АБВ.txt|application/octet-stream|5"
string(37) "АБВ.txt|application/octet-stream|5"
===DONE===


Actual result:
--------------
bool(true)
string(37) "АБВ.txt|application/octet-stream|5"
string(37) "АБВ.txt|application/octet-stream|0"
===DONE===