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[GH-ISSUE #240] Keepalive sends "backspace" key #3094

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opened 2026-03-13 01:41:48 +03:00 by kerem · 3 comments

kerem commented

2026-03-13 01:41:48 +03:00

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Originally created by @Sloppyedwards on GitHub (May 18, 2022).
Original GitHub issue: https://github.com/1Remote/1Remote/issues/240

Hi,

I'm not sure if this is something unique to PRemoteM or KiTTY, but it's an issue I don't recall having with other SSH clients. When I have an open SSH session and am editing code (in VIM, for example), if I take a break to work on something else, when I come back to PRemoteM, I find that I have lost characters due to the "keepalive" keypress sending something equivalent to a backspace. How can I prevent this?

Originally created by @Sloppyedwards on GitHub (May 18, 2022). Original GitHub issue: https://github.com/1Remote/1Remote/issues/240 Hi, I'm not sure if this is something unique to PRemoteM or KiTTY, but it's an issue I don't recall having with other SSH clients. When I have an open SSH session and am editing code (in VIM, for example), if I take a break to work on something else, when I come back to PRemoteM, I find that I have lost characters due to the "keepalive" keypress sending something equivalent to a backspace. How can I prevent this?

kerem

2026-03-13 01:41:48 +03:00

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kerem commented

2026-03-13 01:42:04 +03:00

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@VShawn commented on GitHub (May 19, 2022):

I think I've fixed this keepalive issue before #55 , using the default option of KiTTY

https://github.com/cyd01/KiTTY/blob/master/kitty_ini.txt#L57-L58

And it did reproduct on KiTTY.

PRemoteM can not prevent this currently since the kitty.ini is build inside the app.

Maybe in future version I can provide an option to disable keepalive.

@VShawn commented on GitHub (May 19, 2022): I think I've fixed this keepalive issue before #55 , using the default option of KiTTY https://github.com/cyd01/KiTTY/blob/master/kitty_ini.txt#L57-L58 And it did reproduct on KiTTY. PRemoteM can not prevent this currently since the kitty.ini is build inside the app. Maybe in future version I can provide an option to disable keepalive.

kerem commented

2026-03-13 01:42:09 +03:00

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@Sloppyedwards commented on GitHub (May 20, 2022):

Thanks for your response!

What is the meaning of the '\k08\' string (what character is that supposed to represent)?
What is the difference between the KiTTY anti-idle string and the null packet keepalive feature carried over from PuTTY? I'm guessing that the anti-idle string should only be necessary on terminals where the null packet is insufficient to do the job?

@Sloppyedwards commented on GitHub (May 20, 2022): Thanks for your response! What is the meaning of the '\k08\\' string (what character is that supposed to represent)? What is the difference between the KiTTY anti-idle string and the null packet keepalive feature carried over from PuTTY? I'm guessing that the anti-idle string should only be necessary on terminals where the null packet is insufficient to do the job?

kerem commented

2026-03-13 01:42:14 +03:00

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@VShawn commented on GitHub (Jun 23, 2022):

as cyd01 mentioned in https://github.com/cyd01/KiTTY/issues/383, we can simply remote the \k08\ to fix this ticket.

@VShawn commented on GitHub (Jun 23, 2022): as cyd01 mentioned in https://github.com/cyd01/KiTTY/issues/383, we can simply remote the `\k08\` to fix this ticket.

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