Re: [jgroups-users] unexplained port usage

Hi Bobby,

the only other port opened should be by FD_SOCK. This can be set by 
start_port.

To find out which protocol opens the other port I suggest run the app in 
a debugger and set a breakpoint in Socket / ServerSocket.

On 09/06/16 22:18, Questions/problems related to using JGroups wrote:
> Hi Bela et al,
>
> In an earlier version of our product, using jgroups '3.4.2.Final', the
> customer sees jgroups using some random ports besides the ones used for
> jgroups binding address. Can you tell me if these are used by jgroups
> for anything? 41233 and 35223
>
> The stack we use is below (for 3.4.2):
>
> Thanks,
> Bobby
>
>          stack.addProtocol(new TCP()
>              .setValue("oob_thread_pool_keep_alive_time", 5000)
>              .setValue("timer_keep_alive_time", 3000)
>              .setValue("bind_addr",
> InetAddress.getByName(getBindingAddress()))
>              .setValue("bind_port", <7800 in this case>)
>              .setValue("thread_pool_min_threads", 1)
>              .setValue("thread_pool_keep_alive_time", 5000)
>              .setValue("send_buf_size", 640000)
>              .setValue("oob_thread_pool_queue_max_size", 100)
>              .setValue("oob_thread_pool_max_threads", 8)
>              .setValue("thread_pool_queue_enabled", false)
>              .setValue("sock_conn_timeout", 300)
>              .setValue("oob_thread_pool_min_threads", 1)
>              .setValue("loopback", false)
>              .setValue("oob_thread_pool_queue_enabled", false)
>              .setValue("max_bundle_timeout", 30)
>              .setValue("thread_pool_queue_max_size", 100)
>              .setValue("recv_buf_size", 5000000))
>              .addProtocol(new TCPPING()
>                  .setValue("initial_hosts", parseHostList())
>                  .setValue("num_initial_members", 3)) // default: 10
>              .addProtocol(new MERGE2()
>                  .setValue("min_interval", 10000)
>                  .setValue("max_interval", 30000))
>              .addProtocol(new FD_SOCK())
>              .addProtocol(new FD()
>                  .setValue("max_tries", getJGRoupsMaxTries())
>                  .setValue("timeout", getJGroupsTimeout()))
>              .addProtocol(new VERIFY_SUSPECT()
>                  .setValue("timeout", 1500))
>              .addProtocol(new BARRIER())
>              .addProtocol(new NAKACK2()
>                  .setValue("use_mcast_xmit", false))
>              .addProtocol(new UNICAST3()
>                  .setValue("conn_close_timeout", 5000L)) // issue 31958
>              .addProtocol(new STABLE()
>                  .setValue("desired_avg_gossip", 50000)
>                  .setValue("max_bytes", 4000000)
>                  .setValue("stability_delay", 1000))
>              .addProtocol(createAuthProtocol())
>              .addProtocol(new GMS()
>                  .setValue("join_timeout", 3000)
>                  .setValue("print_local_addr", false))
>              .addProtocol(new MFC()
>                  .setValue("max_credits", 2000000)
>                  .setValue("min_credits", 800000))
>              .addProtocol(new FRAG2());
>
>
>
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-- 
Bela Ban, JGroups lead (http://www.jgroups.org)


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What NetFlow Analyzer can do for you? Monitors network bandwidth and traffic
patterns at an interface-level. Reveals which users, apps, and protocols are 
consuming the most bandwidth. Provides multi-vendor support for NetFlow, 
J-Flow, sFlow and other flows. Make informed decisions using capacity 
planning reports. https://ad.doubleclick.net/ddm/clk/305295220;132659582;e