Il 02/05/2013 22:44, Alan Bateman ha scritto:
On 02/05/2013 20:35, Enrico Olivelli wrote:
Hi,
In jdk7 there is no way to ask the jvm for the list of actually active
sockets, witout jni or any other native non-portable solution.
Is there any plan to add a jmx set of beans to monitor jvm network
activity in a portable manner?
Thanks
Enrico
I don't know which operating system you are on but the JDK has a
platform-specific management interface named
com.sun.management.UnixOperatingSystemMXBean that allows the number of
open file descriptors to be monitored. This isn't enumerating the open
sockets so it might not be want you want. Personally I would use lsof
or /proc to look at the target VM for information like this.
-Alan.
For Unix deployments I use lsof too but is not a portable solution and I
don't like my JVM to start external processes to look inside itself
As you said UnixOperatingSystemMXBean is useful only to get the number
of open FD
I would like a standard facility to list all open sockets, at least:
- endpoint addresses (local address and port and remote address and port)
- connection status (ESTABLISHED, TIME_WAIT....)
- timestamp of creation...
- timestamp of last activity ?
thanks
Enrico
