Hunt down java.net.SocketException: No buffer space available

Question

Hi I have very ugly problem with: java.net.SocketException: No buffer space available (maximum connections reached?) It is client-server app. Client is Windows XP SP2 32

Answer 1

What we tried (and successfully) kill the problem. JAVA - check again every socket we used, register them in some special class if needed
- provide SocketFactory and ServerSocketFactory for every class which open socket itself (for example jboss Connectors)
- check opened files, close them in finally
- URL opens connection too, but if you ask for stream after that, connection is closed together with stream (thanks Stephen).

OS
- use different java (1.5, 1.6, 1.7)
- install new drivers
- use netstat and monitor traffic on background (using scripts, yes win xp can do the scripts pretty nicely). Use advanced packet sniffers (wire shark?) if needed.
- win xp have limit for concurrent connections, check them (google) too
- check again and again for virus and mallware (even on private network!)