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I read on this blog that FileZilla opens up a Primary connection for Navigation as well as Fallback and a Secondary Connection for File Transfers. What I am trying to understand is that whether File Zilla opens up 10 connections for 10 parallel upload of files OR one single secondary connection is re-used for transferring all the ten files.

https://forum.filezilla-project.org/viewtopic.php?t=4180

john.p.doe
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I just looked it up using TCPView from Sysinternals against N connections. Varying N from 1 to 5 and back. The connection numbers followed the configuration setting for "Max simultaneous transfers" when "Limit for concurrent downloads" and "Limit for concurrent uploads" is set to Zero.

So, short answer:

  • FileZilla opens and retains a separate connection for browsing and navigation
  • FileZilla opens one separate connection for a file transfer as described above.
chkdsk
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