Application state network card driving method and apparatus

An application state network card driving method, comprising the following steps of:

• initializing a system;
• establishing a physical network card hardware device channel;
• creating a virtual network card device, which comprises:
• opening a VPN service, calling a public interface in an internal class of the VPN service to preset parameters of the virtual network card device, calling a function in the internal class of the VPN service to create the virtual network card device, and saving a virtual network card device node;
• opening the physical network card hardware device channel and a virtual network card device node channel;
• carrying out data communication between the system and a physical network card hardware device, which comprises:
• reading, by the virtual network card device, protocol layer packet data in the virtual network card device node, and transmitting the data to the physical network card hardware device through a network protocol interface module and a device interface module in sequence;
• and receiving, by the device interface module, the data sent by the physical network card hardware device, transmitting the data to the network protocol interface module, then transmitting the data to the virtual network card device through the network protocol interface module, and writing, by the virtual network card device, the data into the virtual network card device node;
• and
• deleting the virtual network card device, which comprises:
• closing the physical network card hardware device channel and the virtual network card device node channel, calling a node closing function in system functions to close the virtual network card device node, and calling a service closing function in the system functions to close the VPN service;
• wherein
• the process of initializing the system comprises:
• opening hardware device plugging and unplugging detection, when the physical network card hardware device is detected to be plugged, identifying the physical network card hardware device, and when the identification is successful, carrying out subsequent operations;
• and when the physical network card hardware device is detected to be unplugged, identifying the physical network card hardware device, and when the identification is successful, carrying out subsequent operations.