From 3ff8382929c35aa3a8d8a0d507ae5a01fb714834 Mon Sep 17 00:00:00 2001
From: alsorokin <alexander.sorokin@akvelon.com>
Date: Thu, 5 Mar 2015 10:56:42 +0300
Subject: [PATCH] CB-8590 (Windows) Fixed download.onprogress.lengthComputable

github close #67
---
 src/windows/FileTransferProxy.js | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/windows/FileTransferProxy.js b/src/windows/FileTransferProxy.js
index 3d299ef..659e5c9 100644
--- a/src/windows/FileTransferProxy.js
+++ b/src/windows/FileTransferProxy.js
@@ -361,7 +361,9 @@ exec(win, fail, 'FileTransfer', 'upload',
                         total: evt.progress.totalBytesToReceive,
                         target: evt.resultFile
                     });
-                    progressEvent.lengthComputable = true;
+                    // when bytesReceived == 0, BackgroundDownloader has not yet differentiated whether it could get file length or not,
+                    // when totalBytesToReceive == 0, BackgroundDownloader is unable to get file length
+                    progressEvent.lengthComputable = (evt.progress.bytesReceived > 0) && (evt.progress.totalBytesToReceive > 0);
 
                     successCallback(progressEvent, { keepCallback: true });
                 });