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ensure that a client can only keep one passive listener open at a time #412

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merged 1 commit into from
Jul 19, 2023

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drakkan
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@drakkan drakkan commented Jul 14, 2023

A client might send many PASV commands and never send a transfer command. This will lead to passive ports exhaustion.

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codecov bot commented Jul 14, 2023

Codecov Report

Patch coverage: 100.00% and project coverage change: +0.20 🎉

Comparison is base (7bb35a8) 86.25% compared to head (d8aff32) 86.46%.

Additional details and impacted files
@@            Coverage Diff             @@
##             main     #412      +/-   ##
==========================================
+ Coverage   86.25%   86.46%   +0.20%     
==========================================
  Files          11       11              
  Lines        1601     1603       +2     
==========================================
+ Hits         1381     1386       +5     
+ Misses        152      151       -1     
+ Partials       68       66       -2     
Impacted Files Coverage Δ
transfer_pasv.go 76.15% <100.00%> (+2.71%) ⬆️

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A client might send many PASV commands and never send a transfer command.
This will lead to passive ports exhaustion.
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@fclairamb fclairamb left a comment

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Good catch!

@fclairamb fclairamb merged commit 3fe6de2 into fclairamb:main Jul 19, 2023
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@drakkan
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drakkan commented Jul 19, 2023

Thank you for merging. I think there is also another issue, see here but I'm unable to replicate and the user hasn't provided enough logs to understand what is happening.

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2 participants