通过网络套接字实现客户机和服务器的通信.c
2017-01-05 23:01
267 查看
/*通过网络套接字实现服务器与主机的通信,客户端向主机
*发送数据,服务器读取客户端数据,并将小写字母转化为
大写返回给客户端
* */
/* 服务器*/
# include <stdio.h>
# include <sys/types.h>
# include <sys/socket.h>
# include <netinet/in.h>
# include <arpa/inet.h>
# include <unistd.h>
# include <stdlib.h>
# include <string.h>
#define _DEBUG 0
# define PORT 8080
void work(char *buf){
char *p = buf ;
while(*p){
if ('a'<=*p&&*p<='z'){
*p+='A'-'a';
}
p++;
}
}
int main ()
{
int ret ;
char buf[1024];
close(0);
//step 1 :创建套接字
int server_fd;
int client_fd;
server_fd = socket (AF_INET ,SOCK_STREAM ,0 ) ;
if (server_fd==-1){
perror("socket is failed\n");
exit(0);
}
#ifdef DEBUG
printf ("socket is susses\n");
#endif
//step 2 :设置服务器地址
struct sockaddr_in sockaddr_server;
struct sockaddr_in sockaddr_client ;
sockaddr_server.sin_family = AF_INET;
sockaddr_server.sin_port = htons(PORT);
sockaddr_server.sin_addr.s_addr = INADDR_ANY;
//step 3:绑定套接字
ret = bind (server_fd,(struct sockaddr*)&sockaddr_server,sizeof(sockaddr_server));
if (ret ==-1){
perror ("bind is failed\n");
exit(0);
}
#ifdef DEBUG
printf ("bind is susses\n");
#endif
//step 4 :设置队列
ret = listen (server_fd, 10);
if (ret ==-1){
perror("listen is failed\n");
exit(0);
}
#ifdef DEBUG
printf ("listen is susses\n");
#endif
//step 5 :等待客户端连接
b: printf ("waitting for client\n") ;
socklen_t sockaddr_len = sizeof (sockaddr_server);
client_fd = accept(server_fd, (struct sockaddr*)&sockaddr_client, &sockaddr_len);
if (client_fd== -1){
perror("accept is failed\n");
exit(0);
}
printf ("\naccept is susses\n");
//step end
//处理数据,即服务器读取客户端数据,将小写字母转化为大写 返回给客户端
while(1){
ret = read (client_fd,buf,sizeof(buf)-1);
buf[ret]=0;
if(ret == -1){
perror("read is failed \n");
exit(0);
}
if(ret==0){
printf("client is closed\n");
goto b ;
}
else{
printf ("received %d bytes,they are %s\n",ret,buf);
work(buf);
}
ret = write(client_fd,buf,sizeof(buf));
if (ret == -1){
perror ("write is failed \n");
exit(0);
}
}
return 0 ;
}
----------------------------------------------------------------------------------------------------------------
/*通过网络套接字实现服务器与主机的通信,客户端向主机
*发送数据,服务器读取客户端数据,并将小写字母转化为
大写返回给客户端
* */
/* 客户端*/
# include <stdio.h>
# include <sys/types.h>
# include <sys/socket.h>
# include <netinet/in.h>
# include <arpa/inet.h>
# include <unistd.h>
# include <stdlib.h>
# include <string.h>
# define MYIP "192.168.220.131"
# define PORT 8080
# define _DEBUG 0
int main(void)
{
int client_fd;
int ret ;
char buf[1024];
//setp 1 创建网络套接字
client_fd = socket(AF_INET,SOCK_STREAM,0);
if ( client_fd <0){
perror("scoket is faild \n");
exit(0);
}
#ifdef DEBUG
printf("socket is sucess\n");
#endif
//setp 2 套接字地址
struct sockaddr_in addr_server; //定义
addr_server.sin_family = AF_INET ; //类型
addr_server.sin_addr.s_addr = inet_addr(MYIP); //IP
addr_server.sin_port = htons( PORT) ; //端口
//setp 3 连接到服务器
ret = connect (client_fd , (struct sockaddr*)&addr_server ,sizeof(addr_server)) ;
if (ret == -1){
perror ("connect faild \n") ;
exit(0);
}
#ifdef DEBUG
9797
printf("connect is sucess\n");
#endif
printf ("server is connectd \n");
//step end
//处理数据,向服务器发送数据,并打印出服务器返回的数据
while(1){
printf ("input strings:\n");
fgets (buf,sizeof(buf),stdin);
write(client_fd,buf,strlen(buf));
read(client_fd,buf,sizeof(buf));
printf ("%s\n",buf);
}
return 0 ;
}
*发送数据,服务器读取客户端数据,并将小写字母转化为
大写返回给客户端
* */
/* 服务器*/
# include <stdio.h>
# include <sys/types.h>
# include <sys/socket.h>
# include <netinet/in.h>
# include <arpa/inet.h>
# include <unistd.h>
# include <stdlib.h>
# include <string.h>
#define _DEBUG 0
# define PORT 8080
void work(char *buf){
char *p = buf ;
while(*p){
if ('a'<=*p&&*p<='z'){
*p+='A'-'a';
}
p++;
}
}
int main ()
{
int ret ;
char buf[1024];
close(0);
//step 1 :创建套接字
int server_fd;
int client_fd;
server_fd = socket (AF_INET ,SOCK_STREAM ,0 ) ;
if (server_fd==-1){
perror("socket is failed\n");
exit(0);
}
#ifdef DEBUG
printf ("socket is susses\n");
#endif
//step 2 :设置服务器地址
struct sockaddr_in sockaddr_server;
struct sockaddr_in sockaddr_client ;
sockaddr_server.sin_family = AF_INET;
sockaddr_server.sin_port = htons(PORT);
sockaddr_server.sin_addr.s_addr = INADDR_ANY;
//step 3:绑定套接字
ret = bind (server_fd,(struct sockaddr*)&sockaddr_server,sizeof(sockaddr_server));
if (ret ==-1){
perror ("bind is failed\n");
exit(0);
}
#ifdef DEBUG
printf ("bind is susses\n");
#endif
//step 4 :设置队列
ret = listen (server_fd, 10);
if (ret ==-1){
perror("listen is failed\n");
exit(0);
}
#ifdef DEBUG
printf ("listen is susses\n");
#endif
//step 5 :等待客户端连接
b: printf ("waitting for client\n") ;
socklen_t sockaddr_len = sizeof (sockaddr_server);
client_fd = accept(server_fd, (struct sockaddr*)&sockaddr_client, &sockaddr_len);
if (client_fd== -1){
perror("accept is failed\n");
exit(0);
}
printf ("\naccept is susses\n");
//step end
//处理数据,即服务器读取客户端数据,将小写字母转化为大写 返回给客户端
while(1){
ret = read (client_fd,buf,sizeof(buf)-1);
buf[ret]=0;
if(ret == -1){
perror("read is failed \n");
exit(0);
}
if(ret==0){
printf("client is closed\n");
goto b ;
}
else{
printf ("received %d bytes,they are %s\n",ret,buf);
work(buf);
}
ret = write(client_fd,buf,sizeof(buf));
if (ret == -1){
perror ("write is failed \n");
exit(0);
}
}
return 0 ;
}
----------------------------------------------------------------------------------------------------------------
/*通过网络套接字实现服务器与主机的通信,客户端向主机
*发送数据,服务器读取客户端数据,并将小写字母转化为
大写返回给客户端
* */
/* 客户端*/
# include <stdio.h>
# include <sys/types.h>
# include <sys/socket.h>
# include <netinet/in.h>
# include <arpa/inet.h>
# include <unistd.h>
# include <stdlib.h>
# include <string.h>
# define MYIP "192.168.220.131"
# define PORT 8080
# define _DEBUG 0
int main(void)
{
int client_fd;
int ret ;
char buf[1024];
//setp 1 创建网络套接字
client_fd = socket(AF_INET,SOCK_STREAM,0);
if ( client_fd <0){
perror("scoket is faild \n");
exit(0);
}
#ifdef DEBUG
printf("socket is sucess\n");
#endif
//setp 2 套接字地址
struct sockaddr_in addr_server; //定义
addr_server.sin_family = AF_INET ; //类型
addr_server.sin_addr.s_addr = inet_addr(MYIP); //IP
addr_server.sin_port = htons( PORT) ; //端口
//setp 3 连接到服务器
ret = connect (client_fd , (struct sockaddr*)&addr_server ,sizeof(addr_server)) ;
if (ret == -1){
perror ("connect faild \n") ;
exit(0);
}
#ifdef DEBUG
9797
printf("connect is sucess\n");
#endif
printf ("server is connectd \n");
//step end
//处理数据,向服务器发送数据,并打印出服务器返回的数据
while(1){
printf ("input strings:\n");
fgets (buf,sizeof(buf),stdin);
write(client_fd,buf,strlen(buf));
read(client_fd,buf,sizeof(buf));
printf ("%s\n",buf);
}
return 0 ;
}
相关文章推荐
- uc笔记10---网络通信,套接字(Socket),基于 TCP 协议的客户机/服务器模型
- 通过套接字(socket)和UDP协议实现网络通信
- 目的:实现一个2008serve的IIS的虚拟目录(通过网络路径(UNC)的形式,共享在另外一个2008服务器上
- 通过套接字(socket)和UDP协议实现网络通信
- 实现一个2008serve的IIS的虚拟目录(通过网络路径(UNC)的形式,共享在另外一个2008服务器上
- 实现一个2008serve的IIS的虚拟目录(通过网络路径(UNC)的形式,共享在另外一个2008服务器上
- C#使用多线程实现网络爬虫,并且通过网络传输,传到另外的服务器数据库存储
- (转找了好久)实现一个2008serve的IIS的虚拟目录(通过网络路径(UNC)的形式,共享在另外一个2008服务器上
- 通过服务器实现客户端的相互通话。(需要导入jar包)论保存的重要性
- 网络编程:使用Socket实现简单的服务器和客户端的通信
- 通过MSTP技术实现小型制造工厂的网络链路备份以及负载均衡
- 在Exchange服务器中实现网络存储
- F5通过http class实现多域名分流进行服务器负载均衡
- .NET将文件上传到网络共享服务器的方法(已验证实现)
- 通过QEventLoop实现网络请求QNetworkAccesssManager阻塞
- Nginx网络epoll多进程系列:tcp服务器仿nginx多进程和多路IO的实现
- 通过WINS服务器实现从机器名到IP的转换
- 通过创建链接服务器以实现对远程数据库的操作
- 【Linux网络编程】并发服务器的三种实现模型
- php实现远程网络文件下载到服务器指定目录(方法一)