Hi All,
Two me over two years, but I finally figured it out!
<editorial comment> AAAAHHHH !!!!!! </editorial comment>
Fedora 43
vsftpd-3.0.5-11.fc42.x86_64
Windows 10 & 11
Cobian Reflector (all versions)
Cobian Reflector reports this error message when backing up to vsftp:
Only one usage of each socket address (protocol/network address/
port) is normally permitted
I have asked this question a couple of times here thinking the
problem was vsftp. It was not.
I have reported the issue to Cobian thinking maybe it was his issue.
I also was not.
It turn out that the issue is with the Windows Operating system itself.
Windows defaults
MaxUserPort to 4000 (sockets)
TcpTimedWaitDelay to 120 (seconds)
Cobian is throwing a YUGE bit bucket at vsftp and runs out of sockets,
then tries to reuse them before the "TcpTimedWaitDelay" expires.
Here is the fix.
REGEDIT4
; References:
;
https://help.socketlabs.com/docs/how-to-fix-error-only-one-usage-of-each-socket-address-protocolnetwork-addressport-is-normally-permitted
;
https://stackoverflow.com/questions/36669406/cant-find-maxuserport-registry-editor
;
https://superuser.com/questions/320763/how-to-change-tcp-time-wait-delay-in-windows-7-2008-server
;
https://hstechdocs.helpsystems.com/manuals/globalscape/archive/secureserver3/Windows_Registry_keys_for_TCP_IP_Performance_Tuning.htm
;
; This is to correct the Cobian Reflector error when using vsFTP, and
maybe other problems too:
; Only one usage of each socket address (protocol/network
address/port) is normally permitted
;
; MaxUserPort default to 4000 (sockets)
; TimesWaitDelay default is 120 (seconds)
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters]
"MaxUserPort"=dword:0000fffe
"TcpTimedWaitDelay"=dword:0000001e
-T
--
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