#include <myhead.h>
int main(int argc, const char *argv[])
{
int sfd=socket(AF_INET,SOCK_STREAM,0);
if(sfd==-1)
{
perror("socket error");
return -1;
}
struct sockaddr_in sin;
sin.sin_family=AF_INET;
sin.sin_port=htons(8888);
sin.sin_addr.s_addr=inet_addr("192.168.124.11");
if(bind(sfd,(struct sockaddr*)&sin,sizeof(sin))==-1)
{
perror("bind error");
return -1;
}
if(listen(sfd,128)==-1)
{
perror("listen error");
return -1;
}
int newfd = -1;
//定义结构体变量接收对方地址信息结构体
struct sockaddr_in cin; //用于接收客户端地址信息结构体
socklen_t addrlen = sizeof(cin); //用于接收客户端结构体的大小
char sbuf[128] = ""; //服务器输入数据内容
fd_set readfds, tempfds;
FD_ZERO(&readfds);
FD_SET(0, &readfds);
FD_SET(sfd, &readfds);
int maxfd=sfd;
struct sockaddr_in cin_arr[1024];
while(1)
{
tempfds=readfds;
int res=select(maxfd+1,&tempfds,NULL,NULL,NULL);
if(res==-1)
{
perror("select error");
return -1;
}
if(res==0)
{
printf("long wait time\n");
return -1;
}
for(int i=0;i<=maxfd;i++)
{
if(!FD_ISSET(i,&tempfds))
{
continue;
}
if(i==sfd)
{
if((newfd = accept(sfd, (struct sockaddr*)&cin, &addrlen)) == -1)
{
perror("accept error");
return -1;
}
printf("[%s %d]:发来连接请求\n", inet_ntoa(cin.sin_addr), ntohs(cin.sin_port));
cin_arr[newfd]=cin;
FD_SET(newfd,&readfds);
if(newfd>maxfd)
{
maxfd=newfd;
}
}
else if(0==i)
{
fgets(sbuf, sizeof(sbuf), stdin); //从终端输入数据
sbuf[strlen(sbuf)-1]=0;
printf("触发了键盘输入事件:%s\n", sbuf);
//将该消息发送给所有客户端
for(int i=4; i<=maxfd; i++)
{
send(i, sbuf, sizeof(sbuf), 0);
}
printf("发送成功\n");
}
else
{
char rbuf[128] = ""; //用于接收客户发发来的数据
//将容器清空
bzero(rbuf, sizeof(rbuf)); //memset(rbuf, 0, sizeof(rbuf));
//从套接字中读取数据‘
int res = recv(i, rbuf, sizeof(rbuf)-1, 0);
if(res == 0)
{
printf("客户端已经下线\n");
//关闭跟客户端通信的套接字
close(i);
FD_CLR(i,&readfds);
for(int k=maxfd; k>=sfd; k--)
{
if(FD_ISSET(k, &readfds))
{
maxfd = k;
break;
}
}
continue;
}
printf("[%s %d]: %s\n", inet_ntoa(cin_arr[i].sin_addr), ntohs(cin_arr[i].sin_port), rbuf);
//加个笑脸再回回去
strcat(rbuf,"*_*");
send(i, rbuf, strlen(rbuf), 0);
printf("发送成功\n");
}
}
}
close(sfd);
return 0;
}
#include <myhead.h>
int main(int argc, const char *argv[])
{
int cfd = socket(AF_INET, SOCK_STREAM, 0);
if(cfd == -1)
{
perror("socket error");
return -1;
}
struct sockaddr_in sin;
sin.sin_family = AF_INET;
sin.sin_port = htons(8888);
sin.sin_addr.s_addr = inet_addr("192.168.124.11");
if(connect(cfd, (struct sockaddr*)&sin, sizeof(sin)) == -1)
{
perror("connect error");
return -1;
}
struct pollfd pfds[2];
pfds[0].fd=0;
pfds[0].events = POLLIN;
pfds[1].fd = cfd; //文件描述符
pfds[1].events = POLLIN; //检测读事件
char wbuf[128] = "";
while(1)
{
int res = poll(pfds, 2, -1);
if(res == -1)
{
perror("poll error");
return -1;
}else if(res == 0)
{
printf("time out\n");
return -1;
}
if(pfds[0].revents == POLLIN)
{
fgets(wbuf, sizeof(wbuf), stdin); //从终端上获取一个字符串
wbuf[strlen(wbuf)-1] = '\0'; //将换行换成 '\0'
//判断输入的字符串值
if(strcmp(wbuf, "quit") ==0)
{
break;
}
//将数据发送给服务器
send(cfd, wbuf, strlen(wbuf), 0);
}
if(pfds[1].revents == POLLIN)
{
//将字符数组清空
bzero(wbuf, sizeof(wbuf));
recv(cfd, wbuf, sizeof(wbuf)-1, 0);
printf("收到服务器消息为:%s\n", wbuf);
}
}
close(cfd);
return 0;
}