UDP类型的 client/server 实例

最新推荐文章于 2025-05-17 15:48:01 发布

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基于UDP协议的网络通信主要用于消息的收发，因为它为不可靠的协议；

服务器程序：

Int main() { Int servfd; Struct Sockaddr_in server_addr,client_addr; Char buf[] = " "; Int len = sizeof(server_addr) Bzero(&server_addr,sizeof(server_addr)); Bzero(&client_addr, sizeof(client_addr)); Servfd = socket(AF_INET, SOCK_DGRAM, 0 ); Server_addr.sin_famliy = AF_INET; Server_addr.sin_port = htons(2222); Server_addr.sin_addr.s_addr = htonl(INADDR_ANY); Blind(server_addr, (struct sockaddr *)&server_addr, len); While(1) { Recvfrom(servfd, buf, 100, 0, (struct sockaddr *)&client_addr, sizeof(client_addr)); Printf("recv %s\n",buf); Sleep(1); Sendto(servfd, "OK", 3, 0, (strucsockadd*)&client_addr,sizeof(client_addr));

} Return 1; }

客户端程序：

Int main() { Int clientfd; Char buf[] = " "; Struct sockaddr_in sockaddr;clientaddr; Bzero(&sockaddr, sizeof(sockaddr)); Bzero(&clientaddr, sizeof(clientaddr)); Sockaddr.sin_family = AF_INET; Sockaddr,sin_port = htons(2222); Sockaddr.sin_addr.s_addr = inet_addr("192.168.220.155"); Clientfd = socket(AF_INET, SOCK_DGRAM, 0 ); While(1) { Sendto(clientfd, "hello", 6, 0, (struct sockaddr *)&clientaddr, sizeof(clientaddr));