Network * * * shared port means that multiple applications * * * share the same network interface. In a computer network, each device has a unique IP address and a set of port numbers to identify a specific application. If many applications need to use the same port, they need to "share" the port, use the port number in turn, and rely on the protocol to distinguish different applications.

Network * * * sharing ports can greatly improve the efficiency of applications. If each application has independent ports, then these ports will occupy a lot of system resources, resulting in high CPU load, memory exhaustion and other problems. Through network sharing port, all applications can share the same port, which can save a lot of system resources and improve the response speed and performance of applications.

There are two main ways to realize network port sharing: one is through TCP/IP protocol stack, and the other is through middleware (such as CORBA and SOAP). In TCP/IP protocol stack, multiple applications can use the same IP address and port number to access network services, and then distribute messages to different applications according to the message types in the protocol. In middleware, multiple applications can enjoy a middleware service, which can accept requests from different applications, distinguish different requests through specific protocols, and then forward the requests to the corresponding applications.