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FAQ
本页汇总使用过程中的高频疑问。标准版与 Pro 的差异见 首页 的「版本说明」。
支持哪些操作系统？ Windows 与 Linux。
需要付费吗？ 不需要。本项目免费、开源，使用 GNU GPL v3 许可证。
需要管理员权限运行吗？需要设置开机自启吗？ 普通用户权限即可运行；程序不提供开机自启。
标准版与 Pro 有什么区别？ 两版的同步逻辑不同：标准版为中心化同步，文件数据经主机转发；Pro 为去中心化端到端直连（mesh），并在同步之上提供投递、收集模式与权限管理。详见首页的对照表。
标准版与 Pro 可以加入同一个房间吗？ 不可以。两版采用完全不同的房间验证与同步逻辑，无法互通，同一房间内的设备需使用同一版本。
如何创建和加入房间？ 见快速上手。
房间可以设置密码吗？ 可以，密码为可选项。创建房间时可填写密码，其他设备加入时会要求输入。密码属于房间属性，与主机无关：主机重新回到自己创建的房间时同样需要验证密码。密码仅用于加入房间时的身份验证，不用于数据加密。
扫描不到房间、无法加入怎么办？ 局域网环境可能受多级路由器、AP 隔离等限制，导致部分网络下无法扫描到房间或无法加入。遇到该情况请依次确认：两端设备连接在同一路由器 / 同一局域网；防火墙已放行本程序所需通信（首次运行时若弹出防火墙提示，请选择允许）。如遇此类情况可尝试手动指定IP。加入过的房间号会保留在历史记录中，若曾手动指定 IP 成功连接，该 IP 也会一并保留，便于再次加入。
主机离线后会怎样？ 两版表现不同：标准版数据经主机转发，主机离线期间无法继续同步；Pro 的连接端进入静默待机，每 10 秒自动回探主机，并保持主机最后下发的只读权限，已连接设备间的数据面直连不受影响。
加入房间时被拒绝？ 通常为同步逻辑版本号或密码不匹配。请将各端升级至同一最新版本后重试。
一个房间能接入多少台设备？ 不设硬性上限，实际可用规模取决于局域网带宽与设备性能。
同步的是哪个目录？
同步目录由程序固定，位于用户主目录下：LANSyncBox/SyncFolder/<房间号>（Windows 为 C:\Users\<用户名>\LANSyncBox\SyncFolder\<房间号>，Linux 为 ~/LANSyncBox/SyncFolder/<房间号>）。创建或加入房间时自动创建，无需手动选择。
在一台设备上删除文件，会同步到其它设备吗？ 会。删除操作会传播到同房间的其它设备，各端对应文件一并删除，请谨慎操作。
传输是否加密？ 局域网环境下传输未加密，房间密码仅用于加入验证。建议仅在可信的局域网中使用。
有文件大小限制吗？ 程序未设置硬性大小上限，实际传输能力受磁盘空间与网络带宽影响。
传输中断了怎么办？ 自动断点续传，无需从头开始（最多尝试 3 次）。
多台设备同时修改同一个文件会怎样？ 依据版本向量、逻辑时钟、时间戳、设备标识进行分层仲裁，最终各端收敛为一致状态，不丢文件、不重复。
投递需要满足什么条件？ 需在同一房间，且接收端在线。接收端离线时无法送达。
在一台设备复制文本，另一端怎么获取？ 文本会被写入各端系统剪贴板，直接在目标设备的任意位置粘贴（Ctrl+V）即可。
复制图片或文件呢？
图片、文件等内容通过胶囊栏投递传输，Windows系统可在需要接收的位置按下 Ctrl+V 快捷键执行接收，Linux系统则通过点击胶囊栏中接收按钮，选择保存位置完成文件接收。
粘贴没有反应？ 请确认接收端在线、与发送端处于同一房间，且投递已完成。
「缓存」指的是什么？
指 SyncFolder 下各房间的同步目录，即已同步文件在本机的存放位置。
清空缓存会有什么影响？ 会删除该房间目录及其中的文件，操作不可撤销，请确认后再执行。清空后该房间的文件需重新同步获取。
如何切换界面语言？ 使用主界面的语言切换按钮，切换结果会持久保存。
在哪里反馈问题或建议？ 请前往 https://github.com/LisseldeE/LANSyncBox/issues 提交，或联系开发者邮箱 lisselde@outlook.com。
This page collects frequently asked questions. For differences between Standard and Pro, see the "Editions" section on the Home page.
Which operating systems are supported? Windows and Linux.
Is it paid? No. This project is free and open source under the GNU GPL v3 license.
Does it require administrator rights or auto-start on boot? It runs with normal user privileges; there is no auto-start on boot.
What is the difference between Standard and Pro? Their sync logic differs: Standard uses centralized sync, forwarding file data through the host; Pro uses decentralized end-to-end direct connections (mesh) and adds delivery, collection mode, and permission control on top of syncing. See the comparison table on the Home page.
Can Standard and Pro join the same room? No. The two editions use completely different room-verification and sync logic, cannot interoperate; devices in the same room must run the same edition.
How do I create and join a room? See Getting Started.
Can a room have a password? Yes, the password is optional. You may set one when creating a room, and other devices will be asked for it when joining. The password is a room attribute unrelated to the host: the host itself must also verify the password when returning to its own room. The password is used only to authenticate the join request, not for data encryption.
The room cannot be discovered, or joining fails. What should I do? A LAN environment may be limited by multi-level routers, AP isolation, and similar conditions, so in some networks the room cannot be discovered or joined. In that case, check the following in order: both devices are connected to the same router / same LAN; the firewall allows the program's traffic (if a firewall prompt appears on first run, choose Allow). If the problem persists, try manually specifying the IP address of the other device. Rooms you have joined are kept in the history list; if you once connected by manually specifying an IP, that IP is kept as well for easier re-joining.
What happens when the host goes offline? It differs by edition: Standard forwards data through the host, so syncing cannot continue while the host is offline; Pro connected ends enter silent standby, probe the host every 10 seconds, and keep the read-only permission last issued by the host, while direct data-plane links between connected devices stay unaffected.
Joining is rejected. Why? Usually a sync logic version mismatch or password version mismatch. Upgrade all devices to the same latest version and retry.
How many devices can one room hold? There is no hard limit; the practical scale depends on LAN bandwidth and device performance.
Which folder is synced?
The sync folder is fixed by the program, under your home directory: LANSyncBox/SyncFolder/<room-number> (on Windows, C:\Users\<username>\LANSyncBox\SyncFolder\<room-number>; on Linux, ~/LANSyncBox/SyncFolder/<room-number>). It is created automatically when you create or join a room; no manual selection is needed.
If I delete a file on one device, will it be deleted on the others? Yes. Deletions propagate to the other devices in the same room, and the file is removed on each of them. Please be careful.
Is the transfer encrypted? Transfers are not encrypted in a LAN environment; the room password is used only for join verification. Using it only on a trusted LAN is recommended.
Is there a file size limit? There is no hard size limit in the program; practical capability depends on disk space and network bandwidth.
What if a transfer is interrupted? It resumes automatically without starting over (up to 3 attempts).
What happens when several devices modify the same file at once? Layered arbitration runs through version vectors, logical clocks, timestamps, and device identifiers; all ends eventually converge to a consistent state, with nothing lost or duplicated.
What are the requirements for delivery? Same room, and the receiving device must be online. It cannot be delivered while the receiver is offline.
I copied text on one device — how do I get it on another? The text is written to the system clipboard on each device; simply paste (Ctrl+V) anywhere on the target device.
What about images or files?
Images, files, and other content are transferred via the capsule bar. On Windows, you can press Ctrl+V at the desired destination to receive them, while on Linux, you can click the receive button in the capsule bar and select a save location to complete the file transfer.
Pasting does nothing. Why? Check that the receiver is online, in the same room as the sender, and that the delivery has completed.
What does "cache" refer to?
It refers to the per-room sync folders under SyncFolder — that is, where synced files are stored locally.
What happens if I clear the cache? It deletes that room's folder and its files. The action is irreversible, so confirm before proceeding; the room's files will need to be re-synced afterwards.
How do I switch the interface language? Use the language toggle on the main screen; the choice is persisted.
Where can I report issues or suggestions? Submit at https://github.com/LisseldeE/LANSyncBox/issues or contact the developer at lisselde@outlook.com.