当 SFTP 连接中断时文件会发生什么情况？
我需要实现从 Web 服务器到 SFTP 服务器的文件传输。 当文件传输过程中连接中断时，已经传输的字节会怎样？
I need to implement a file transferring from a web server to a SFTP server. When the connection is interrupted during the file transferring, what happens to the bytes already transferred?
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简短回答：已传输的文件部分丢失/垃圾收集/标记为删除
Short Answer: The part of the file already transferred is lost/garbage collected/marked for deletion
除非 SFTP 服务器具有恢复中断传输的内置功能（不确定是否存在，如果存在则可能是一个插件），否则文件根本不会被传输。
Unless the SFTP server has built-in capabilities to resume an interrupted transfer (not sure if this exists, if it does it would probably be an addon), the file will not be transferred at all.
最可能的情况是服务器上现在存在部分传输的文件。
很少有服务器会将此类文件标记为删除 - 这意味着您永远无法恢复损坏的传输，而必须从头开始。
The most likely scenario is that a partially transferred file will now exist on the server.
Few servers would mark such a file for deletion - it would mean that you could never resume a broken transfer, but would have to start again from scratch.