多进程利用TCP进行信息群发功能

/服务器的代码
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <unistd.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#define SEVER_IP "192.168.11.224"
#define PORT_NUM 1111
typedef struct sockaddr SA;
typedef struct sockaddr_in SIN; 
int main(int argc,char *argv[])
{
    int sockfd;
    SIN seraddr = {0};
    int ret,ret1,ret2;
    int res,res1,res2;
    int reuse = 1;
    int clifd1,clifd2; 
    bzero(&seraddr,sizeof(SIN));
    seraddr.sin_family = AF_INET;
    seraddr.sin_port = htons(PORT_NUM);
    seraddr.sin_addr.s_addr = inet_addr(SEVER_IP);
    sockfd = socket(AF_INET,SOCK_STREAM,0);
    if(sockfd == -1)
    {
        printf("socketfd error\r\n");
        exit(0);
    }
    printf("sockfd = %d\r\n",sockfd);
    setsockopt(sockfd,SOL_SOCKET,SO_REUSEADDR,&reuse,sizeof(reuse));
    ret=bind(sockfd,(SA *)&seraddr,sizeof(SA));
    if(ret == -1)
    {
        printf("failed\r\n");
        exit(0);
    }
    printf("ret = %d\r\n",ret);
    ret1 = listen(sockfd,5);
    if(ret1 == 0)
    {
         printf("listen success\r\n");
    }
    SIN cliaddr = {0};
    socklen_t addrlen;
   clifd1 = accept(sockfd,(SA *)&cliaddr,&addrlen);//accept函数是有阻塞功能
printf("clifd1 = %d\r\n",clifd1);
clifd2 = accept(sockfd,(SA *)&cliaddr,&addrlen);//accept函数是有阻塞功能
printf("clifd2 = %d\r\n",clifd2);
if(clifd1 == -1)
{
perror("accept failed\r\n");
exit(0);
}
if(clifd2 == -1)
{
perror("accept failed\r\n");
exit(0);
}
    res = fork();
    while(1)
    {
        if(res == 0)
        { 
            while(1)
            {
                char r_buf[20] = {0};
                recv(clifd1,r_buf,sizeof(r_buf),0);
                send(clifd2,r_buf,sizeof(r_buf),0);
            }  
        }
        else
        {
            while(1)
            {
                char t_buf[20] = {0};
                recv(clifd2,t_buf,sizeof(t_buf),0);
                send(clifd1,t_buf,sizeof(t_buf),0);
            }
        }
    }
    close(sockfd);
    close(clifd1);
    close(clifd2);
    return 0;
}
================================================
//客户端的代码
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <unistd.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#define SEVER_IP "192.168.11.224"
#define PORT_NUM 1111
typedef struct sockaddr SA;
typedef struct sockaddr_in SIN; 
int main(int argc,char *argv[])
{
    int serfd;
    int clidfd;
    SIN seraddr = {0};
    int ret,ret1,ret2;
    int rec_len = 0;
    bzero(&seraddr,sizeof(SIN));
    serfd = socket(AF_INET,SOCK_STREAM,0);
    if(serfd == -1)
    {
        perror("socket failed\r\n");
        exit(0);
    }
    printf("%d\r\n",serfd);
    bzero(&seraddr,sizeof(SIN));
    seraddr.sin_family = AF_INET;
    seraddr.sin_port = htons(PORT_NUM);
    seraddr.sin_addr.s_addr = inet_addr(SEVER_IP);
    serfd = socket(AF_INET,SOCK_STREAM,0);
    ret = connect(serfd,(SA *)&seraddr,sizeof(SA));
    if(ret == -1)
    {
        perror("connect failed\r\n");
    exit(0);
    }
    printf("connect success\r\n");
    int res;
    res = fork();
    if(res == 0)
    {
        char t_buf[20] = {0};
        while(1)
        {
            scanf("%s",t_buf);
            send(serfd,t_buf,sizeof(t_buf),0);
        }
    }
    else
    {
        char r_buf[20] = {0};
        while(1)
        {
            recv(serfd,r_buf,sizeof(r_buf),0);
            printf("A:%s\r\n",r_buf);
        }
    }
    close(serfd);    
    return 0;
}