I just got done implementing an SFTP over WebSocket integration and ended up ruining my sleep schedule doing it.

July 02, 2025 - 04:33 UTC

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A fun issue I had to solve was managing the back pressure from the File API to the WebSocket to the underlying SSH session.
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My initial implementation of uploads resulted in flooding the WebSocket which would freeze up the terminal/pty channel, since the terminal input would be queued after the whole file upload. Or downloads would have to wait until an upload finished.
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