invalid call is removed because of connection closed
Transient network disconnection: After the Provider and Consumer establish a connection, the Consumer initiates a calling request. If the Provider still processes this request, the timeout time for the Consumer does not reach, and the Consumer closes the connection due to network and other problems, an error is returned.
Provider restart: After the Consumer initiates a request, it waits for the response from the Provider. If the provider is restarted at this time, the socket is disconnected, and the Consumer receives the operating system connection closed callback, and error is returned.
If the service is idempotent, retry the service. Check the server network simultaneously. This problem is often caused by network disconnection (transient disconnection).