#include int main()
{
int sockfd,new_fd;
struct sockaddr_in my_addr;
struct sockaddr_in their_addr;
int sin_size;
//建立TCP套接口
if((sockfd = socket(AF_INET,SOCK_STrEAM,0))==-1)
{
perror("socket");
exit(1);
}
//初始化结构体，并绑定2323端口
my_addr.sin_family = AF_INET;my_addr.sin_port = htons(2323);
my_addr.sin_addr.s_addr = INADDr_ANY;bzero(&(my_addr.sin_zero),8);
//绑定套接口
if(bind(sockfd,(struct sockaddr *)&my_addr,sizeof(struct sockaddr))==-1)
{
perror("bind");
exit(1);
}
//创建监听套接口
if(listen(sockfd,10)==-1)
{
perror("listen");
exit(1);
}
//等待连接
while(1) {
sin_size = sizeof(struct sockaddr_in);
perror("server is run");
//如果建立连接，将产生一个全新的套接字
if((new_fd = accept(sockfd,(struct sockaddr *)&their_addr,&sin_size))==-1)
{
perror("accept");
exit(1);
}
//生成一个子进程来完成和客户端的会话，父进程继续监听
if(!fork())
{
//读取客户端发来的信息
if((numbytes = recv(new_fd,buff,strlen(buff),0))==-1)
{
perror("recv");
exit(1);
}
printf("%s",buff);
//将从客户端接收到的信息再发回客户端
if(send(new_fd,buff,strlen(buff),0)==-1)
perror("send");
close(new_fd);
exit(0);
}
close(new_fd);
}
close(sockfd);
}
