谁有辩论赛计时器的源代码

来源：百度知道 编辑：UC知道 时间：2024/06/04 04:49:57
希望发到邮箱里xiaq8@yahoo.com.cn谢谢了
若可用可加分
能详细的说明如何使用吗？？？

客户端
/* Client side of an ftp service. Actions:
- connect to server and request service
- send size-of-sile info to server
- start receiving file from server
- close connection
*/

#include <stdio.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <time.h>
#include <errno.h>

#define SERVER_PORT_ID 6081
#define CLIENT_PORT_ID 6086
#define SERVER_HOST_ADDR "128.119.40.186"
/* gaia.cs.umass.edu */
#define MAXSIZE 512

#define ACK 2
#define NACK 3
#define REQUESTFILE 100
#define COMMANDNOTSUPPORTED 150
#define COMMANDSUPPORTED 160
#define BADFILENAME 200
#define FILENAMEOK 400
#define STARTTRANSFER 500
int readn(int sd,char *ptr,int size);
int writen(int sd,char *ptr,int size);

main(int arg