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Cloverleaf not honoring a RST packet when received.

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  • February 6, 2015 at 11:49 pm #54565
    David Coffey
    Participant

      Cloverleaf 5.8.5 on Windows server 2008.  

      I have threads running as servers, that when receiving an RST packet from the remote system will not drop the connection.  

      Netstat and the Cloverleaf console show an intact connection yet the other system will begin sending SYN packets requesting a new connection.  These are rejected as we have everything configured to only accept one connection.   I prefer to stay away from multi-server as that is only a band-aid, masking the real issue.  

      Is this behavior configurable through PDL?   How can I fix this as lately I am spending way too much time dealing with connectivity issues.

      David Coffey

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      • February 7, 2015 at 2:09 am #82007
        Jim Kosloskey
        Participant

          Is there a VPN or FireWall involveed?

          email: jim.kosloskey@jim-kosloskey.com 29+ years Cloverleaf, 59 years IT - old fart.

        • February 9, 2015 at 3:51 pm #82008
          David Coffey
          Participant

            No, this interface with routed traffic, no VPN or firewall.

          • February 9, 2015 at 4:50 pm #82009
            Jim Kosloskey
            Participant

              Well is the foreign system disconnecting then asking for a new connection or is it just asking for more than one connnection concurrently?

              email: jim.kosloskey@jim-kosloskey.com 29+ years Cloverleaf, 59 years IT - old fart.

            • February 9, 2015 at 4:52 pm #82010
              Max Drown (Infor)
              Keymaster

                David, try turning on EOALIAS to monitor the low level communication. Are you having these connectivity issues with just the one application or with all of your connecting applications?

                -- Max Drown (Infor)

              • February 9, 2015 at 4:55 pm #82011
                David Coffey
                Participant

                  I have been watching this one connection with Wireshark.  I have seen others with similar behavior.

                • February 9, 2015 at 4:57 pm #82012
                  Max Drown (Infor)
                  Keymaster

                    Some good discussion about RST packets here:

                    http://stackoverflow.com/questions/251243/what-causes-a-tcp-ip-reset-rst-flag-to-be-sent

                    -- Max Drown (Infor)

                  • February 9, 2015 at 5:08 pm #82013
                    David Coffey
                    Participant

                      This is understood.  The question remains is when receiving a RST packet Cloverleaf does not tear down the connection and start over?  

                      In my case the condition occurs after 20 minutes of inactivity.  Though the other party swears their equipment is not set up to do this it still happens.  Shweesh.

                    • February 9, 2015 at 5:49 pm #82014
                      Max Drown (Infor)
                      Keymaster

                        David, I am not sure to be honest. I would suggest submitting the question through Infor Xtreme.

                        -- Max Drown (Infor)

                      • February 10, 2015 at 4:57 pm #82015
                        David Barr
                        Participant

                          David Coffey wrote:

                          This is understood.

                        • February 10, 2015 at 5:01 pm #82016
                          David Coffey
                          Participant

                            David,

                            You are correct, this is an OS issue, not a Cloverleaf bug.  Thanks for reminding me.  

                            However it never does hurt to throw the query out to the community, someone may have solved this behavior previously.  

                            David Coffey

                          • February 11, 2015 at 2:31 pm #82017
                            Terry Kellum
                            Participant

                              Just one more reason……   😉

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