C例子：AF_INET域流套接字通信

/* ************************** * Process IPC by Stream Socket * the code of server * *************************/ #include <unistd.h> #include <stdio.h> #include <string.h> #include <netdb.h> #include <sys/socket.h> #include <sys/types.h> #include <arpa/inet.h> #include <netinet/in.h> #define BUF_SIZE 128 int main() { int server_fd,client_fd; int index = 0; int res; char buf[BUF_SIZE]; char * host = "localhost"; //using localhost IP address:127.0.0.1 char * server = "1080"; //using port 1080, it must be more then 1024 struct addrinfo hints; struct addrinfo *result; //init the value memset(&hints,0,sizeof(struct addrinfo)); result = NULL; //set the rule for sockey address //hints.ai_flags = AI_ADDRCONFIG | AI_CANONNAME; hints.ai_flags = AI_NUMERICSERV; hints.ai_family = AF_INET; hints.ai_socktype = SOCK_STREAM; //get address info ,it has all attribute of socket res = getaddrinfo(host,server,&hints,&result); if(0 != res) { printf("get address infomation failed .Error code:%d \n",res); return 1; } //create socket server_fd = socket(result->ai_family,result->ai_socktype,result->ai_protocol); if(-1 == client_fd) { printf("create socket failed \n"); return 1; } //bind address to socket res = bind(server_fd,result->ai_addr,result->ai_addrlen); if(-1 == res) { printf("bind address failed \n"); return 1; } //create queue of socket and listen for it res = listen(server_fd,2); if(-1 == res) { printf("create queue fo socket failed \n"); return 1; } while(index++ < 2) { client_fd = accept(server_fd,NULL,NULL); if(-1 == client_fd) { printf("can't accept request of client \n"); return 1; } // read data by socket res = read(client_fd,buf,BUF_SIZE); if(-1 == res) { printf("read data by socket failed \n"); return 1; } printf("[server] receiving data (%s) from client by socket\n",buf); // close socket res = close(client_fd); if(-1 == res) { printf("close socket failed \n"); return 1; } } if(result->ai_next) freeaddrinfo(result); // close socket res = close(server_fd); if(-1 == res) { printf("close socket failed \n"); return 1; } return 0; }