Sunday, January 18, 2015

CrossFTP 1.96.6 Released

CrossFTP 1.96.6 is a major update. The main changes are:


- Support new Amazon S3 V4 Authentication.
- Fixed that Glacier’s max part size preference should have 4G max size limit.
- Fixed that SSL certification verify dialog failed to reload the certs on connection.
- Fixed that multi-part download’s file resume after power outrage may lead to incorrect download. 
- Fixed that Amazon Glacier/GS/S3’s upload should should not be allowed in the root folder.
- Fixed that Mac App Store’s application open dialog should show correct content.
- Site-local-site transfer failed to apply proper file name in some cases.

This update is recommended for all CrossFTP users.
--
CrossFTP is a FTP, SFTP, FXP, WebDav, Amazon S3, Amazon Glacier and Google Cloud Storage client for Windows, Mac, and Linux.
CrossFTP Home: http://www.crossftp.com/
 

Sunday, January 04, 2015

Multipart Download Support in CrossFTP

To improve the transfer speed and reliability, CrossFTP Pro supports multipart download for all supported protocols, including FTP/SFTP/FTPS/WebDav/S3/GS/Amazon Glacier. Multipart download means that large file on the server will be divided into smaller parts during the download, and then all parts will be combined back to become the original file. Compared with the traditional Multipart download has 2 key advantages:
  • Fast - Multi-thread engine can be used to download file parts in parallel to fasten the download speed.
  • Reliable - Each part of the file is much smaller than the original file, so that the part's download is more reliable and recoverable.
Figure 1 below shows a file in the queue is being downloaded in the queue with multiple divided parts in CrossFTP Pro. There are 2 threads are downloading the file parts simultaneously in the figure.
Fig. 1. Multipart Download in CrossFTP Pro  
By default, multipart download is enabled in CrossFTP Pro. To enable/disable the multipart download in CrossFTP Pro, or change the part size, you need to go to Tools -> Global Options -> Transfer -> Enable Multipart Download, and you can also set up the part size here.
For Amazon Glacier, if you've enabled the multipart download, large file's retrieval is also divided into parts, and the parts' retrieval will obey the retrieval rate limit (in Tools -> Global Options -> S3/Glacier) as well. It is suggested you can setup the part size same or smaller than the retrieval rate limit, so that the retrieval rate can be strictly enforced.

--
CrossFTP is a FTP, SFTP, FXP, WebDav, Amazon S3, Amazon Glacier and Google Cloud Storage client for Windows, Mac, and Linux.
CrossFTP Home: http://www.crossftp.com/