Port with Established connection Plus a Listener (not multi)

[Rob Lindsey]

All,

I am at a loss here.  I have an inbound thread (not a multi-server) that is listening on port 62670 but when the external client connects to this port I get both an established connection plus a Listener.

/qdx/qdx5.3/integrator/client10> netstat -an | grep 62670

tcp4       0      0  *.62670                *.*                    LISTEN

tcp4    1516      0  192.168.106.5.62670    128.64.0.17.16401      ESTABLISHED

I have not seen this happen before and I need to get it fixed because according to the client they can not send data to this port and get a ACK back.  Here is how I have the comms section setup…

   { PROTOCOL {

       { CA_FILE {} }

       { CA_PATH {} }

       { CERT_FILE {} }

       { CLOSE 0 }

       { CONTROLMSGS 0 }

       { COPYCLIENTIPP 0 }

       { HOST {} }

       { ISMULTI 0 }

       { ISSERVER 1 }

       { IS_SSL 0 }

       { MAXCLIENT 0 }

       { MAXOBQD 0 }

       { MAXPREXLTQD 0 }

       { MODE {} }

       { PASSWORD {} }

       { PDLNAME mlp_tcp.pdl }

       { PDLTYPE tcp-server }

       { PORT 62670 }

       { PRIVATE_KEY {} }

       { RECONNECT 1 }

       { REOPEN 5 }

       { TYPE pdl-tcpip }

   } }

TIA for any and all help.

Rob Lindsey

Topic

[James Cobane]

Rob,

One suggestion I would have is to not use a port number that is in the ephemeral range as a server port.  I would suggest a port number below 32768.

Jim Cobane

Henry Ford Health

[Rob Lindsey]

Here is another HINT that I have found in the ERR log…

setsockopt NODELAY on socket failed: Invalid argument

I get this about every 3 minutes.

Thanks again.

Rob

[Jim Kosloskey]

Rob,

I would agree with Jim Cobane – change your port to one lower than the base of your system’s ephemeral range.

This shows you have configured to LISTEN on port 62670 but since that is in the ephemeral range, you have actually ESTABLISHED the connection on port 16401.

Give that a try and see if that does not correct the issue.

email: jim.kosloskey@jim-kosloskey.com 30+ years Cloverleaf, 61 years IT – old fart.

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