Microsoft Visual Studio 10.0 performs winpcap to obtain the network adapter code

WinPcap is an open source library based on the Win32 platform for capturing and analyzing network packets.

Most Web applications access the network through widely used operating system components, such as sockets. This is a simple implementation because the operating system has properly handled the underlying implementation details (such as protocol processing, encapsulation of packets, etc.) and provides a familiar interface to read and write files.

Sometimes, however, this "simple approach" does not meet the needs of the task because some applications require direct access to the packets in the network. That is, those applications need access to the original packets, i.e. packets that are not processed by the operating system using the network protocol.

The purpose of WINPCAP is to provide this access for WIN32 applications; WinPcap provides the following features

• Captures the original packet, whether it is destined for a machine or is exchanged on other devices (shared media)

• Filter packets based on user-specified rules before data packets is sent to an application

• Send the original packet over the network

• Collect and Count network traffic information

These features need to be implemented with a network device driver installed in the Win32 kernel, plus several dynamic-link library DLLs.

All of these features can be demonstrated through a powerful programming interface, easy to develop, and can be used on different operating systems. The main objective of this manual is to describe the use of these programming interfaces with the help of a number of program examples.

In general, the first thing to write a WinPcap-based application is to get a list of connected network adapters. Both Libpcap and WinPcap provide the PCAP_FINDALLDEVS_EX () function to implement this function: This function returns a list of pcap_if structures, each of which contains the details of an adapter. It is important to note that the data field name and description represent an adapter name and a description that people can understand.

First configure Microsoft Visual Studio 10.0

Item-->** Properties (ALT+F7)

Configuration Properties---inventory tools--input and output--embedded list--No

Item-->** Properties (ALT+F7)

Configuration Properties-->c/c++--> General--Additional include directory--

Item-->** Properties (ALT+F7)

Configuration Properties--linker--general--Additional library directories--

Item-->** Properties (ALT+F7)

Configuration Properties--linker--Add dependency--add "; Packet.lib;wpcap.lib "

Item-->** Properties (ALT+F7)

Configuration Properties-->c/c++--> Preprocessor---preprocessor definition--add "; Have_remote

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Microsoft Visual Studio 10.0 performs winpcap to obtain the code for the network adapter