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fix: initialize pseudo console with default size for SSH sessions#20472
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Resolved an invalid parameter error (-2147024809) during PTY creation onWindows 11 22H2 (but not only) when connecting via JetBrains Toolbox.CreatePseudoConsole doesn't accept a 0x0 (zero width and zero height)console size. Toolbox uses the default native client which apparentlysends the width and height set to 0 in ssh req opts.Unfortunately, there is NO explicit documentation in the officialMicrosoft documentation that states the minimum valid values or explicitlyprohibits 0x0.Looking at real-world implementations in the search results, all examplesuse reasonable non-zero values.I tested this with a local Windows VM registered to dev.coder.comi.e. externally managed workspace.Fixes:#20468
github-actionsbot commentedOct 24, 2025 • edited
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All contributors have signed the CLA ✍️ ✅ |
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fioan89 commentedOct 24, 2025
I have read the CLA Document and I hereby sign the CLA |
cdrci2 added a commit to coder/cla that referenced this pull requestOct 24, 2025
deansheather approved these changesOct 25, 2025
b890930 intomain 30 checks passed
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Resolved an invalid parameter error (-2147024809) during PTY creation on Windows 11 22H2 (but not only) when connecting via JetBrains Toolbox which spawns the native SSH client with
-ttforcing PTY allocation even though there is no "terminal" on the client side to query its size.CreatePseudoConsole doesn't accept a 0x0 (zero width and zero height) console size and unfortunately, there is NO explicit documentation in the official Microsoft documentation that states the minimum valid values or explicitly prohibits 0x0.
Looking at real-world implementations in the search results, all examples use reasonable non-zero values.
I tested this with a local Windows VM registered to dev.coder.com i.e. externally managed workspace.
Fixes:#20468