On Apr 16, 2008, at 6:30 PM, Trygve Hardersen wrote:
I checked out the 2.1.1 branch that is using openejb 3.0, but I'm
still getting the error. It seems less frequent though, but it's still
bad. The stack trace is different, but the root cause is the same:
Hi Trygve,
I'm guessing that you're running on a Windows? I've only seen this
type of error happen on a Windows. Note that this is a client socket
(not a server socket). We aren't assigning the port address... It's
being assigned to the socket dynamically.
One possibility is that you are exhausting the available user port
numbers. When a socket is closed, it goes into a TIME_WAIT state and
isn't actual closed until some delay time. By default, the max user
port address is 5000 and the TIME_WAIT delay is 4 minutes. So, it's
not too difficult to exhaust all possible user port addresses.
You have to update the Windows Registry to change these values. Here's
a Windows 2000 doc on the registry settings -- http://technet.microsoft.com/en-us/library/bb726981.aspx
MaxUserPorts controls the upper range for user ports.
TcpTimedWaitDelay controls the TIME_WAIT delay.
Hopefully, increasing MaxUserPorts (e.g. 65534) and decreasing
TcpTimedWaitDelay (e.g. 30)will fix your problem.
If not, then I also recall a problem where Windows would assign the
same dynamic port address to 2 (or more) newly created sockets. It was
then a race to see which one would be activated first and the other
one would get a bind failure. Not sure there's anything we can do
about that...
--kevan
