One of the users (out of three) has been working fine for a month and a half, and on Monday, had a Servoy smart client crash. She force quit it, tried to restart, and was left with the 'Servoy Next Generation Platform' splash logo, for ages, until an error saying connection to server is invalid. I remotely logged in and could see Servoy doing the same thing over and over. I reinstalled latest Java 7, deleted java apps, cleared java cache, reinstalled, absolutely nothing I did helped.
I then checked the server log and found a bunch of these:
SocketAcceptor failure for socket: 39a31339[SSL_NULL_WITH_NULL_NULL: Socket[addr=/192.168.1.75,port=49412,localport=1099]]
On a whim, I tried changing her IP address, and it worked immediately and perfectly again.
Today, this problem has come back again, and the user has had to go and work on another computer.
No other users have been affected by this, and I haven't seen the problem anywhere else. It is very frustrating because the migration from Filemaker to Servoy has been very bumpy (hugely dirty data out of Filemaker, which I have been cleaning, and which the customer doesn't recognise should be a problem since it worked 'okay in Filemaker')
Has anyone seen this behaviour before, or know where I need to look for the problem? I suspected something was funny about their network, but we have switched parts of it out, and it has not helped.
I don't know whether this is a server problem or a client problem (although I suspect client as it doesn't affect either of the other two users). I don't know what I should be looking for...
Java prefs on client machine are set to Direct for network connection...