[v16] Fix client_idle_timeout enforcement for desktop sessions#56049
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zmb3 merged 1 commit intobranch/v16from Jun 25, 2025
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[v16] Fix client_idle_timeout enforcement for desktop sessions#56049zmb3 merged 1 commit intobranch/v16from
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We had been updating the client activity tracker any time a message was sent from the client (browser or Teleport Connect) to the remote host. This approach was fine for the original RDP implmentation, as all messages sent in this direction were for user input (keypresses, mouse movement, scroll wheel, etc), but it is insufficient with the current RemoteFX implementation as there are some messages sent by the remote Windows hosts which require client acknowledgements. These acknowledgements were mistakenly being counted as client activity. Closes #55691
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We had been updating the client activity tracker any time a message was sent from the client (browser or Teleport Connect) to the remote host. This approach was fine for the original RDP implementation, as all messages sent in this direction were for user input (keypresses, mouse movement, scroll wheel, etc), but it is insufficient with the current RemoteFX implementation as there are some messages sent by the remote Windows hosts which require client acknowledgements. These acknowledgements were mistakenly being counted as client activity.
Closes #55691
Backports #55693
Changelog: fixed an issue that could prevent Windows desktop sessions from terminating when the idle timeout was exceeded.