Visual C + + Network programming--socket socket programming

Socket : A communication bridge between different hosts in the network, the network communication software function that people use is based on socket socket as communication bridge.

Addressing: In Winsock, users can use a unified socket address structure in the TCP/IP address family To resolve problems that may occur in TCP/IP addressing, as defined below

 1  struct     sockaddr_in{ 2   short  sin_family; //   3  unsigned short  sin_port; //  port number    4  // ip address  5  8 ]; //  reserved, need to be specified as 0  6 }; 

BYTE order: The order in which the data is transferred is based on network byte order and host byte order. From the point of view of data storage, the network is in order to store the most important bytes in the data first, while the host byte order stores the unimportant bytes first.

Winsock provides functions for converting between network byte order and host byte order.

Socket correlation function

1. Constructor Csocket::csocket ();

Exp:csocket sock;

Create a Socket object pointer

CSocket *sock;

Sock=new CSocket;

2. Binding Address Information

　　

Visual C + + Network programming--socket socket programming