I have a connection set up to a server, all that is fine...
I can send smaller files just fine...
Larger files? It seems that the Command channel times out...
In the header of the Welcome message is a warning of a timeout at 3 minutes of inactivity...
So I dutifully setup a 150 second Keep Alive...
What I see in the log is...
The file (11GB+) sends fine...(Although there seems to be many reconnections during the transfer)
I will see an OPTS MLST command send
followed by a PWD and then a reconnection attempt...
Finally I will see a "Transfered <many> bytes STATUS message... Followed by an XCRC - which seems to receive no response after maybe 30 seconds...
Then another PWD...
Then an ERROR> Server has unexpectedly closed the connection...
And we start again....
Ideas?