The ip of the hospital intranet server can be ping, but sometimes the port number is connected and sometimes it is not. Ask the great gods how to solve it. These two days have been bothering me, trying to get an answer. You should consider whether it is a port problem, a server problem or a network problem.

When the internal network ping fails, check whether the port of the server itself is opened normally. If it does not exist in the server, the port will not be created. If the server has this port, please check the network problem.