Posted 25 April 2013 - 12:55 PM

General:

Where can I download the latest version of BitTorrent Sync?

Note: If you currently use the auto-update feature of BitTorrent Sync, it may inform you that your "Client version is up to date" despite a newer build being available. (new builds are currently announced here in the first instance, in advance of the main download page being updated (which may be several days later), or the new build being pushed out to existing users via auto update (which may be a few weeks later!) - therefore, before reporting any issues/bugs with Sync, first please check here that you're running the latest version currently available)

Will BitTorrent Sync remain free, or will they start charging for it once it comes out of beta?

If tomorrow we want to charge you $100 for 10Kb transferred, stop everything related to the app or try to force you not to use BitTorrent Sync, we just physically can't achieve that!

BitTorrent Sync will work tomorrow exactly like it works today, no matter what we will do. And it will work exactly like today even 10 years from now, of course, if we will have computers in future

Is BitTorrent Sync open-source?

What data is collected/seen by BitTorrent Inc when I use Sync?

How secure are "secrets"... can they be "guessed"?

Is there an API available?

Is there an Android/iPhone Mobile App?

Can I control how frequently syncing occurs?

Will me devices still sync when switched off?

Can I use BitTorrent Sync to backup from an internal drive to an externally connected USB drive?

I can't connect to other devices - I think it's a Router/Firewall issue?

What do the device icons mean?

What are .SyncID, .SyncIgnore, .SyncPart, .SyncTemp and .!Sync files and .SyncTrash/.SyncArchive folders?

Is there a limit on the number/size of files I can sync?

How much free disc space you have on the devices you're syncing - if you do not have enough free disc space for the files you wish to sync, they will not sync



How much free memory your devices have. In 1.1.x builds, memory usage increases by around 300-400 bytes per file being monitored by BitTorrent Sync. Therefore, if you're monitoring/syncing 1 million files, you will need around 300-400 MB of free memory.

When a file changes, does BitTorrent transfer the entire file again, or just the part that's changed?

How long are files kept in .SyncTrash/.SyncArchive for?

Is "SyncApp" the same as "BitTorrent Sync"?

How do I use "*" and "?" wildcards in .SyncIgnore files?

*.dat would exclude from syncing all .dat files types regardless of name i.e. myfile.dat, anotherfile.dat, ete



would exclude from syncing all .dat files types regardless of name i.e. myfile.dat, anotherfile.dat, ete abc???.dat would exclude from syncing files named "abc 123 .dat", "abc def .dat", etc... but wouldn't exclude files named "abc1.dat" or "abcdefg.dat", etc



would exclude from syncing files named "abc .dat", "abc .dat", etc... but wouldn't exclude files named "abc1.dat" or "abcdefg.dat", etc *.mp? would exclude from syncing file types such as .mp3, .mp4, .mpa, etc, but wouldn't exclude file types such as .mpeg

Windows-specific:

Why can't I install/run BitTorrent Sync on Windows XP?

When I run the installer nothing happens!?

How to make BitTorrent Sync "Portable"

Save the BitTorrent Sync installer onto your USB memory stick, and run it from that location.



When the installer begins, select "Portable Mode" for the Program Location (NOTE: You will only see the "Portable Mode" option if running the installer from a USB memory stick/SD card, etc)



BitTorrent Sync will then be installed in "Portable Mode" to your USB memory stick/SD card!

How to make BitTorrent Sync run as a service

Is there a Command Line Interface (CLI) for BitTorrent Sync on Windows?

Why can't I access the WebUI?

Linux-specific:

Is there a MIPS build?

How do you define multiple shared folders in the config file?

How do you secure the WebUI with a password?

Common Error Messages:

"Can't open the destination folder"

every

"Selected folder is already added to BitTorrent Sync"

"BitTorrent Sync cannot identify the destination folder"

...and finally...

Firstly, a big welcome to all you new BitTorrent Sync users!The forum has exploded into life since BitTorrent Sync first went "public" on Tuesday 23rd April, so I thought I'd make a supplementary post to compliment the official " BitTorrent Sync FAQ I'll keep this updated with simple, concise answers to common questions that keep cropping up, and which aren't, as yet, covered elsewhere in either the User Guide or in the "official" FAQ thread.Right here: http://labs.bittorre...ments/sync.html Installing on a NAS? See Supported NAS Other unofficial builds: Ubuntu/Debian (Servers) Ubuntu/Debian (Desktops ) | Gentoo ebuild BitTorrent Sync will remain free!From BitTorrent:...and in publicising the start of the "beta" phase on 17 July 2013, the team commented: "And don’t worry. BitTorrent Sync is still free, simple to use, and secure. Pretty awesome, huh?"BitTorrent Sync isn't open source software, although the developers have recently commented "Never say never - we still consider this option". There's also a related discussion on whether Sync will be open source here According to BitTorrent Inc, "There are 3 points of contact with BitTorrent infrastructure: tracker, relay, and check for update service. If you don't use any of these - we will not get any information about you." For more information on what data is seen by BitTorrent Inc, please see this thread In a nut shell, "secrets" are extremely secure, and can't realistically be simply "guessed" by others. There are plenty of existing topics discussing this particular subject should you wish to learn more: ( 1 7 ). Please review/contribute to these threads before considering opening ANOTHER thread on this topic!Not at present, but it is planned , and there is now a dedicated " API wishlist " thread for contributing your suggestions for API functionality.The official android app (beta) is now available in the Google Play Store and requires Android 2.2 or higher, and is currently only support on Arm architecture (x86 architecture support is coming soon!)An iOS app is currently in a "closed alpha" phase, and is expected to become available to users very soon!You can also request mobile-specific features for both Android and iOS clients in this thread Syncing happens in real time. In addition, as a fall back, BitTorrent Sync also rescans files/folders every 10 minutes by default. If you're running BitTorrent Sync 1.1.12 (or later), you can now configure this interval via the advanced "folder_rescan_interval" setting (default value is "600" (seconds) = 10 minutes)BitTorrent Sync is not a cloud storage solution like SkyDrive/DropBox/GDrive, etc - it doesn't sync your files to a "cloud", therefore for one device to sync with another, both devices need to be onlineNo, BitTorrent Sync will not permit you to sync one folder location on your computer to another location on the same computer (i.e. you can't have two shared folders using the same "secret" on the same device)If BitTorrent Sync is struggling to connect through your Router/Firewall, this post may be of useAlso, if you're having trouble connecting to other devices over a VPN, try increasing the MTU size to at least 1500.Finally, please make sure that all your devices are running the same version of BitTorrent Sync. For example, 1.0.x versions will not connect to 1.1.x versions, and 1.1.15 won't connect to 1.1.22, due to changes made to the protocol between these versions.Direct Connection - BitTorrent Sync is able to establish a direct connection to this deviceIn-direct (Relayed) Connection - BitTorrent Sync isn't able to establish a direct connection to this device, and therefore has connected via a intermediate relay server. It is preferable to have direct connections wherever possible, as this will generally provide faster transfer speeds over that of a relayed connection.When you add a new folder to BitTorrent Sync a number of hidden files/folder are automatically created in the folder. The purpose of each are as follows:= A file containing the unique, internal "ID" of the folder. This file should not be manually modified, or deleted. If you do, the folder will no longer be recognized in BitTorrent Sync.= A user editable file allowing you to "exclude" certain files/sub folders for being sync'd= (pre v1.1.40) BitTorrent Sync, by default, won't actually delete any of your files/folders. If a corresponding file/folder is deleted on another device, it will simply be "moved" into the .SyncTrash folder on all other devices, rather than being permanently deleted.= (v1.1.40 and later) Essentially the new name for ".SyncTrash", as this folder stores both local files deleted on remote devices, as well as "versioned" files.files = Temporary files created by BitTorrent Sync when receiving incoming data transfers. Once a file is fully received, it is then renamed to have its .!Sync extension removed i.e. "file.mp3" will become "file.mp3.!Sync" on receiving devices until all data for the file is fully received, at which point it will be renamed back to "file.mp3".= Please see this post There are no limits imposed on the number, or size, of files you can sync with BitTorrent Sync, however there are two factors to take into account:Files smaller than 4MB are transferred again in their entirety when changes are detected.Larger files, however, are split into 4MB "chunks" of data, if one chunk changes, but the others don't, only the chunk that's changed will be transferred (instead of the whole file again).From v1.1.30 onwards, deleted files are kept in .SyncTrash (or .SyncArchive from v1.1.40 onwards) for a default period of 30 days, after which they will be automatically removed. You can change this default period by adjusting the advanced "sync_trash_ttl" setting.Yes, "SyncApp" was the former name of "BitTorrent Sync", so if you see lingering references to "SyncApp" in the forums or elsewhere, don't be concerned! - they are one and the same!"?" is a substitute for a single character instance,"*" is a substitute for multiple character instances.Three examples:BitTorrent Sync on Windows XP requires a minimum of Service Pack 3. If you're running an earlier version of XP, you won't be able to run BitTorrent Sync, and will need to update to SP3 in order to use BitTorrent Sync.In addition, 64-bit editions of XP are also not supported, and there are no plans to support BitTorrent Sync on pre-SP3 or 64-bit editions on XP.Given that Microsoft themselves will cease support for XP in April 2014, it's probably time to consider upgrading anyway!If you've downloaded the BitTorrent Sync installer to a Windows 2003, 2008, WHS v1 or WHS 2011 server, it's likely that your server has blocked the execution of files downloaded from the internet. Simply right click the installer, select Properties -> Unblock -> Ok (Image) . You should then be able to run the installer.If you're not using a Windows server product and nothing happens when you run the installer, it's likely that your download is incomplete/corrupt and you will need to download the installer again (you may need to clear your browser cache/temporary internet files first to ensure a fresh download)If you wish to make BitTorrent Sync "Portable" so that you can use it on another PC without installing, and run it directly from a USB memory stick, here's how:Please see Start Sync as a service on Windows Not at this time! The CLI is only available for Linux buildsThe WebUI is only available with Linux builds. There is no web-based interface for BitTorrent Sync when running under WindowsThere are no MIPS builds of BitTorrent Sync at the present time, however, according to the developers , "We plan to add MIPS support", although there is no timescale at present.Please see this thread By default, the web-based User Interface for BitTorrent Sync isn't password protected. To protect your WebUI (recommended) please see this thread This error can be produced in a number of instances, so here's a few things to check if you encounter error:1. Remember you need to specify a "folder to sync" ondevice you're syncing (not just on the first one!). If you only enter a secret into subsequent devices without also specifying a folder, this error will be shown.2. If you were previously syncing this folder i.e. under a different version of Sync, it may be that the folder's hidden .SyncID is damaged/corrupt. Locate this file, delete it, and then re-add the folder to Sync3. In some instances, Sync may struggle to open network shares. Try mapping the share to a drive letter then adding the folder to sync that way. For instance, if you wish to sync \\MYDRIVE\FOLDER, map "\\MYDRIVE" to a free drive letter - let's say Z:, then add Z:\FOLDER to Sync instead of \\MYDRIVE\FODLERIf you try to add a folder to BitTorrent Sync and you see this message, it's likely that you've already used the "secret" you're entering for one of the other folders you're currently syncing. It's not possible to sync two separate folders on the same device using the same "secret".If you try to add a folder to BitTorrent Sync and you see this message, it's likely that you've already used the "secret" you're entering for one of the other folders you're currently syncing. It's not possible to sync two separate folders on the same device using the same "secret"....Please do bear in mind that BitTorrent Sync is currently just a "", and therefore it may not currently have all the features/functionality/behavior that you'd ideally like to see! If you experience an issue/bug there are instructions on how to report it here . There is also a dedicated and very active " Wishlist " thread where you can contribute ideas & suggestions as to what you think would make BitTorrent Sync even better! The developers do read all these feature requests, and are taking note as to the popularity of each suggestion... so give them time, and I'm sure BitTorrent Sync will get ever better!

Edited by GreatMarko, 26 July 2013 - 10:19 AM.