win11 cygwin rsync 报错

rsync错误如下：

rsync: connection unexpectedly closed (0 bytes received so far) [Receiver]
rsync error: error in rsync protocol data stream (code 12) at io.c(226) [Receiver=3.1.2]
rsync: connection unexpectedly closed (0 bytes received so far) [sender]
rsync error: error in rsync protocol data stream (code 12) at io.c(231) [sender=3.3.0]

断断续续折腾了好几天。最后发现是没安装cygwin里的openssh。调用的ssh命令是 win11 自带的 ssh 命令。

安装完 openssh 就好了。