Ticket #8249: 8249.r9729.diff

http.php

@@ -250 +250 @@
                                 $r['headers']['Content-Length'] = strlen($r['body']);
                         }
 
+                        if ( ! isset( $r['headers']['Content-Length'] ) && ! isset( $r['headers']['content-length'] ) )
+                                $r['headers']['Content-Length'] = strlen($r['body']);
+
                         $transports = WP_Http::_postTransport($r);
                 }