WinSCP bounds too many ports

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txhwind
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WinSCP bounds too many ports

netstat -oq
shows nearly all ports between 1000 and 15000 are bounded by WinSCP.
This makes my application can't listen on these ports.
What happened here?

WinSCP version: I just updated it after I closed it, so I don't know the issue version.
OS version: Windows Server 2016 DataCenter
Protocol: SFTP
GUI or command: GUI explorer
Reproduction: keep WinSCP connected to a remote SSH server for weeks and do a lot of file transfers

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martin
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Re: WinSCP bounds too many ports

Thanks for you report.
Can you tall what operation causes an additional port to be bound?
Are you using some unusual settings? Like SSH tunneling?

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txhwind
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Re: WinSCP bound too many ports

I noticed it hours ago, so I haven't do some experiments about it.
But after I close WinSCP and restart with the same SSH connection configuration, only one port is bounded now.
My usage is usual. Only operations are changing/refreshing local/remote working directories in explorer view and uploading/downloading files (cancelled sometimes).
I think the problem comes from time. I use WinSCP in my working environment, so the connection will be kept for weeks until my local machine has to close.
I also met the same problem months ago, but I didn't check it with netstat.
Status of these ports are all "bound" but not listening or in a connection. It looks like something like memory leak.
I will keep observing ports in following days.

martin wrote:

Thanks for you report.
Can you tall what operation causes an additional port to be bound?
Are you using some unusual settings? Like SSH tunneling?

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martin
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Re: WinSCP bound too many ports

Thanks. Let us know.

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