I am struggling with the following scenario. My customer is running Cloverleaf 6.0 configured as a client to send HL7 messages to a server listening on port 9550. The server is running on a VM. Occasionally communication fails and the only way to recover is to restart the listener on the server. When in the failure state, CL continually tries to establish a new connection to the server on the specified server port (9550) as it thinks the connection has been closed. However, the server believes the connection is still established on port 9550 (as seen by running Windows Netstat on the server). I can reproduce these symptoms by pausing and resuming the VM. In this case I end up in the classic TCP “half-open” problem. When the server resumes from its paused/sleep state, it has no knowledge that it had been paused. After resuming from the pause, I can see the TCP/IP traffic using Wireshark which shows CL continually attempting to re-open a connection to port 9550 (on a new client port each time), but the Server continually responds with a TCP RST command since it does not expect this. Is there any configuration change I can make in CL to help with this problem?
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