Added En-queue Delete/Rename support to the local browser right-click menu.
Fixed a couple issues with the secure connection indicator on the status-bar where the actual status didn't always reflect the indicator status and clicking in the indicator area could sometimes trigger the certificate display when the indicator was not displayed.
Fixed an connection attempt timeout issue, when connecting to a SFTP site FlashFXP would report a transfer failure error even though no transfer was in progress.
Fixed FTP active mode connection issue that could sometimes result in a failed connection.
Changed the transfer complete status line for transfers completed in 1 second or less.
Changed the queue completed "transferred" status line to only be displayed if a transfer is performed and the average speed is now based on the duration of the queue.
Reworked the internal TCP/IP routines to provide improved performance as well as to scale based on the system hardware.
Some secure FTP servers require a delay after issuing the CCC (Clear command channel) command before they'll be able to recognize clear text, In some cases the delay used by FlashFXP wasn't long enough, this delay has been increased to improve compatibility. Most noticeably FlashFXP would appear to hang during login when sending the CLNT command because this is the next command sent after CCC.
Optimized the server file cache 'save to disk thread', when the internal cache becomes full the data is then relocated to the disk drive in a batch mode but the method wasn't optimal causing the UI to appear frozen during the relocation.
Reversed the changes to the 'edit file' feature that were done in back in build 1548.
Fixed HTTP Proxy connection issue where in some cases 1 byte of the stream data was mistakenly treated as part of the HTTP headers.
Simplified HTTP Proxy connection failure error messages.
relocated the "Show active edits window when editing" option to the "View and Edit file" section.
Fixed an OpenSSL issue with some servers when using AUTH SSL.
Fixed remote tree-view icons lacking proper transparency, this was noticeable with a custom background color or if disconnected.
Remote View and Edit now use separate temporary folders so that viewing a file after an edit doesn't trigger a file change notification to upload.
Added 'Schedule At' under Queue on the main menu, previously this was only available via the queue window right-click menu.
Fixed bookmark synchronized browsing issue.
Fixed list and file transfer timeout after 2 minutes.
The custom TCP/IP Buffer sizes weren't being applied correctly. If you're seeing poor performance now please reset your TCP/IP buffer size to default.

Changelog
In this release I eliminated a lot of overhead and unnecessary file operations that were performed prior to each file upload and download. These changes combined with code profiling and optimization have resulted in huge gains in performance and faster transfer queues. And it doesn't stop there, I eliminated UI drawing overhead in numerous places that was causing a performance bottleneck and reducing queue efficiency, I also reworked the task scheduler to disable most of the UI drawing during a schedule since the schedule runs minimized to the tray without user interaction. The performance gains are quite amazing to say the least.

I conducted a couple different test cases and I've outlined the performance gains below. Most gains are from uploads and downloads, with site to site transfers showing very minor improvements.

Test case #1: I perform a nightly FTP upload from my machine to a LAN based FTP server where I upload only new or modified files. This queue contains roughly 250k files and the vast majority of them are skipped. In version 4.0 this process takes over 2 hours and 20 minutes when run as a scheduled task. In this new build it takes 10 minutes when run as a scheduled task and about 20min when run directly with the UI visible and active.

Test case #2: This queue consists of uploading 3k files, downloading 3k files and then transferring the 3k files from site A to site B and then from site B to site A. In version 4.0 this takes 6 minutes and 40 seconds. In this new build it takes 6 minutes 29 seconds. Not a huge improvement but it depends on the situation.
The check free disk space on download feature wasn't properly checking the free space when creating local directories during download which it does now.
I accidentally left a couple debug beeps in the previous release good thing too, The debug beeps indicated that the internal folder structure table was out of sync after performing a remote file delete operation due to an incorrect sequence of commands. This has been resolved and the annoying beeps have been removed.
When adding a new folder bookmark if the name of the bookmark matches an existing bookmark you're now prompted to confirm replacing the existing entry, Previously it would replace the old bookmark without warning.
Fixed a bug on the Attributes (CHMOD) dialog when entering the folder mode directly into the edit box the value was ignored.
In v4.1 Build 1569 I discovered a nasty memory corruption bug that caused havoc with internal memory structures, many of the unusual problems some of you have noticed were caused by this. The memory corruption occurred due to a very unusual chain of events caused by a code change I made to improve the performance of the remote folder navigation. As far as I can tell many previous beta builds are effected by this issue. I urge everyone using a 4.1 beta to upgrade ASAP.

1. Revised SFTP character encoding auto detection section. If the SFTP version is 3 or below we now default to ANSI to maintain compatibility and consistency with previous versions of FlashFXP.
2. Fixed > Queue List > Move to Top. This feature didn't function as intended when a transfer is in progress.
3. Fixed > Local Browser > Several minor bugs.
4. Fixed > Selective transfer rules were broken in prior releases. Looks like a wildcard landed on my keyboard and invalided it.
5. Fixed > FTP-SSL > x509 certificates for login authentication are now working properly. Tested with ProFTPD 1.3.3e (If using TLSOptions AllowDotLogin a password is not needed, however FlashFXP will prompt you for one if you leave it blank, so just enter anything in this field.)
6. Fixed > x509 certificate generation > Our internal x509 routines were failing to generate proper x509 certificates.
7. Fixed > FTP-SSL > x509 client certificates weren't being loaded properly by OpenSSL depending on the PEM format.
8. Added > SSH protocol > when the connection is closed by server, the reason is now displayed in the status window.

1. It has come to my attention that quite a few users have default selective transfer rules that are incorrectly configured, in the previous build I fixed a major issue with selective transfers rules, now a new issue appeared. Though not your typical bug, some users have their default action set to skip with an empty mask list. An empty mask list is treated as a wild-card for matching everything, so when the action is set to skip nothing is transferred. I have changed the rules just for the default rule set by requiring a mask to be set to make the rule set valid, otherwise the actions are disabled.
2. When connecting via the quick connect a unique ID is typically assigned to the entry, however it has come to my attention that this ID is not always generated or is reset when connecting to the site at a later time. This ID is used for pairing sites with queue files and without it the queue doesn't know what site to use to transfer the files. I've reworked the code to ensure that this ID is always created and never changed if it exists.

I made some changes to the _stub.exe used to launch the update installer and perform the update and restart FlashFXP. I have add the windows error code and description to the error message box. This replaces the generic error message. This change will not be noticable to users until upgrade from 1613 to the next release.
Fixed > Site Manager > Multi-Line Tabs > The tab control switches between single-line and multi-line to allow the tab caption to fit. When the tabs were in multi-line mode clicking a top tab switched to the new tab and then back to the tab below it. This issue was caused by an error in the code that handles the tab visibility on selection change and how and when it was called.
Changed > Site Manager > Tab selection, When a tab such as Options is selected and the user selects a different site the tab would often switch from Options to General. The tab that was selected now remains selected provided the tab is still visible. For example select a FTP-SSL site and then select the SSL tab, next select a SFTP site, this will result in the General tab being selected because the SSL tab is no longer visible.
Improved > List controls to reduce flicker when scrolling within them.
Known issues:

I am currently investigating some issues with the update installer failing to complete the update installati

FlashFXP 4.1 RC 1 build 1619

Fixed path drop-down box > mouse wheel scrolling wasn't being handled directly by FlashFXP when it should have, instead it was relying on the mouse driver to perform the scroll operation.
Fixed status window > scrolling via the scroll-bar thumb was broken if the window contained over 32k lines of text.
Improved status window > 10x speed increase by re-factoring the line wrap routine.
Fixed transfer progress bar > the progress bar wasn't re-sized correctly in some situations, as a result the bottom of the bar was sometimes cut off.
Fixed queue window > drag/drop > in the prior build a setting was incorrect causing abnormal behavior.
Fixed FTP > LIST parser > If the connection was lost or closed the temporary buffer used for parsing wasn't cleared, the following connect/reconnect would then treat the old data as part of the next list data.
Fixed status window > scrolling up to the oldest entry would only display a single line in the bottom of the window.
Fixed remote drop-down box > the drop-down navigation history wasn't updated correctly after 15 items were added.
Fixed FTP > LIST parser > entries with dates older than 1900 were treated as invalid and not shown in the file listing.
Fixed server > rename > caching issue, if a transfer is attempted after rename the internal object cache wasn't correctly updated, re-using the stale cache data.



This is a re-release of build 1617 + bug fix. After uploading build 1617 we discovered an issue that was quickly fixed, this fix and update occurred before 1617 was actually made public, however in that time our CDN cached the buggy build. We've had this issue in the past and we use a CDN API to purge the CDN cache prior to any public release, however in an unexpected fashion the CDN control panel/API was down and our purge script didn't report any errors.

This update includes an additional bug fix that was brought to my attention by Lbeansy as I was preparing the new build, so I included it in this update.

Build 1618 contained 4 minor bugs related to the above changes, here's a quick fix for them and I'm sorry that I missed them in my own tests.

A compatibility issue was discovered with GlobalScape Secure FTP v3.3.0, when using SSL/TLS the directory listing would not complete, eventually timing out. This compatibility issue was caused by the unexpected behavior of the FTP server, The FTP server doesn't signal to indicate that the SSL layer is shutting down, instead it just closes the socket.

4.1 Build 1663 (maintenance release)

Fixed upload performance issue, after lots of testing and research I have determined that the problem is related to windows "Receive Window Auto-Tuning Level" setting. If you experience a slow down in this release vs previous releases please let me know via the forums.
Fixed custom command token %f when executing a command via the FTP search dialog. It was returning the path + filename instead of just the filename. (bug #582)
Fixed custom command token %c to correctly handle multiple commands separated by CR/LF.
Fixed the Active Edits dialog would automatically appear after restoring the main window, this issue only appeared on versions of windows prior to Vista.
Fixed auto reconnect on remote server move folder/file, the connection was restored but the operation was not executed if the main window did not have focus. (Bug #586)
Fixed the "swap panes" feature wasn't swapping the text shown on the status-bar. (Bug #587)
Fixed defect when performing a custom command after a loss of connection (i.e idle timeout), The connection is restored but the command wasn't always sent. (Bug #585)
Improved SFTP upload speed on OpenSSH servers.
Improved command line switch parser. (bug #594)

Fixed: [local browser/drag&drop] The state of the drag cursor did not reflect the actual operation that was performed on drop between local browser panes.
Changed: [local browser/drag&drop] All drag/drop operations between local browser windows now correctly support the ctrl and shift keyboard modifiers.
Changed: [local browser/local to local/drag&drop] The behavior of the "local to local" drag/drop option has changed, Now this option will only change the default behavior for drag/drop between the local browsers, it will not effect drag/drop between the tree navigation and the file list within the local browser pane.
Changed [toolbars]: Eliminated some unnecessary repainting when toggling toolbar buttons.
Fixed: The remote file browser was not properly sizing the columns when only the name column is visible and the auto size column setting was off.
Changed: [network/sockets] The way we use TCP keep-alives has changed. Now TCP keep-alives are only enabled on the control channel when a data channel is active.
Fixed: [logging] When disk logging was disabled there was still an attempt to log the session summary on transfer queue completion.
Fixed: [file transfers] The "retry failed transfers" setting was counting the first failure as 1 and as a result a retry count of 1 would not retry the transfer.
Fixed: [file transfers] The "remove failed transfers from queue" setting wasn't working as intended and when this option was enabled a directory failure could result in an end-less loop.
Changed: [file transfers] When the "remove failed transfers from queue" setting was enabled it bypassed the "retry failed transfers" feature, To resolve this issue a failed item is kept in the queue until the retry limit has been reached and then it is removed.
Added: [session/speed limits] You can now set/adjust the session speed limits via the session menu, or by right-clicking the speed limit icon in the status-bar.
Added: Holding down the shift key while selecting Copy to clipboard > HTTP URL will open the url in your default web browser.
Changed: The connection status icons (encryption, speed limiting, compression) are always displayed on the status-bar.
Fixed: [local browser] Drive/device error when attempting to read the icon from a shortcut that points to an invalid location.
Fixed: [portable installer/stub] The installer could fail with an error warning that there isn't enough free space to install FlashFXP.
Changed: [toolbar/background] Changes to the way the background is rendered, eliminating some unnecessary erasing/drawing.
Added: [sftp] A fallback solution for sftp servers where the sftp-subsystem is not enabled, but the sftp-server binary is installed.
Fixed: [local browser/tree navigation] shift and ctrl key modifiers for drag and drop operations.
Fixed: [server/connect] In some cases the connection failure error message was incorrectly reporting "connection refused" as "connection timeout".
Fixed: [server/connect] The IP address list from a DNS lookup was not cleared between connection attempts. This was an issue when connected to Site A via a hostname, disconnecting, then connecting to Site B via an IP. If the connection attempt to Site B failed a the retry was attempted using the IP from Site A.
Changed: [sftp] When using public key authentication FlashFXP will skip any keyboard-interactive password prompts and use the public key.
Fixed: [tray icon] Rapidly hiding and showing the main window could result in a race condition where the main window is hidden and the tray icon is removed.
Fixed: Closing FlashFXP while minimized to the system tray could cause FlashFXP to crash while exiting.
Improved: [toolbar/backgrounds] Using a custom background with certain display layouts. In some cases the end result wasn't what you might expect.
Fixed: [scheduled tasks/logging/email] If the task was configured to send an email and include the log for say failed transfers but logging of failed transfers was disabled, a empty log of the failed transfers was included in the email. Now if logging is disabled there is no reference to the log file in the email.
Improved: [socket/connections] I have improved the way socket connections are established. The previous logic worked fine, however it has come to my attention that the logic was slightly flawed and created a situation where FlashFXP might not receive a socket close notification from the server. As a result this could add unnecessary delays and increasing the wait between each file transfer as much as 10 seconds for BINARY transfers and much longer for ASCII transfers.
Improved: [download/transfers] I eliminated a couple unnecessary file operations.
Changed: [on transfer complete/shutdown computer] The original design didn't allow FlashFXP to shut down the computer if the user session was locked. This has been changed, FlashFXP will now try the normal way first and if windows reports that the session is locked it will attempt to force the shutdown.
Added: [queue/list] The ability to hide/show the columns (Target, Size, and Remark) in the queue window, right-click on the column header for the menu.