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opened 2026-02-27 00:02:20 +03:00 by kerem
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Delete branch "%!s()"
Deleting a branch is permanent. Although the deleted branch may continue to exist for a short time before it actually gets removed, it CANNOT be undone in most cases. Continue?
Originally created by @leffss on GitHub (Nov 17, 2020).
Original GitHub issue: https://github.com/electerm/electerm/issues/1893
上传
目前在浏览器中实现 zmodem 只有 zmodem.js 库可用,这个库自带的上传函数会一次性读取整个文件后再上传,如果文件较大时会占用很大内存并且造成页面
out of memory。所以推荐使用分段传输,不会占用很大内存,参考项目:https://github.com/leffss/devops or https://github.com/leffss/gowebssh 。
下载
同样的,zmodem.js 自带的下载函数也是把整个文件下载完后再保存,下载大文件也会出现
out of memory。这里推荐使用 https://github.com/jimmywarting/StreamSaver.js 实现下载。
注意
根据实际测试,即使通过上面的方式实现上传和下载也不完美。为什么呢?
原因有 2 点:
out of memory了。所以个人认为最优的方案是:
上传大文件时尽量使用 firefox,文件大小限制在 2GB 内(当使用 firefox 时可以放宽限制到更大);下载大文件时尽量使用 chrome,文件大小限制在 2GB 内(当使用 firefox 时最好限制 1GB 内)。
最后提一点,由于 zmodem.js 库的限制,上传和下载速率不可能和 SecureCRT 等类似客户端相比,最快能达到 7-8 MB/S 的样子吧。
@zxdong262 commented on GitHub (Nov 17, 2020):
@leffss
流式上传下载由于electron可以直接调用nodejs fs, 我试过是可行的,但是上传方法,试了你的gowebssh项目是可以的,但是挪到我这里就还是那个错误,我还没找到什么原因。
@lonnywong commented on GitHub (Mar 27, 2022):
@leffss 可以试试 trzsz ( trz / tsz ) ,和 rz / sz 类似,并且支持 tmux。electerm 升级到 1.19 以上,服务端安装 trzsz :https://github.com/trzsz/trzsz
@leffss commented on GitHub (Mar 28, 2022):
谢谢,不过我集成的zmodem已经够用了,有时间再研究这个吧