帮我看看这个客户端怎么连不上

[daihongzhi001]

#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <errno.h>
#include <fcntl.h>
#include <netdb.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>


int main(int argc, char *argv[]){
int sockfd; //socket连接标识符
char buffer[1024];//读入的值
struct sockaddr_in server_addr; //结构体
struct hostent *host=gethostbyname("222.35.11.28"); //解析主机地址
int portnumber=4000;//连接成功与否的表示符
char hello[]="001|01|023|daihongzhi|pub_cn|123456|[e-mail]\n";
/* 客户程序开始建立 sockfd描述符 */
if((sockfd=socket(AF_INET,SOCK_STREAM,0))==-1)
{
fprintf(stderr,"Socket Error:%s\a\r",strerror(errno));
exit(1);
}

/* 客户程序填充服务端的资料 */
bzero(&server_addr,sizeof(server_addr));
server_addr.sin_family=AF_INET;
server_addr.sin_port=htons(portnumber);
server_addr.sin_addr=*((struct in_addr *)host->h_addr);

/* 客户程序发起连接请求 */
if(connect(sockfd,(struct sockaddr *)(&server_addr),sizeof(struct sockaddr))==-1)
{
fprintf(stderr,"Connect Error:%s\a\n",strerror(errno));
exit(1);
}

/* 连接成功了,向服务器端写入 */
if(write(sockfd,hello,strlen(hello))==-1)
{
fprintf(stderr,"Write Error:%s\n",strerror(errno));
exit(1);
}

printf("I have received:%s\n",buffer);
/* 结束通讯 */
close(sockfd);
exit(0);
}

[LuoGD]

server_addr.sin_addr=*((struct in_addr *)host->h_addr); ->改为
server.sin_addr.s_addr = inet_addr("222.35.11.28");

[daihongzhi001]

#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <errno.h>
#include <fcntl.h>
#include <netdb.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>


int main(int argc, char *argv[]){
int sockfd; //socket连接标识符
char buffer[1024];//读入的值
struct sockaddr_in server_addr; //结构体
struct hostent *host=gethostbyname("222.35.11.28"); //解析主机地址
int portnumber=4000;//连接成功与否的表示符
char hello[]="001|01|023|daihongzhi|pub_cn|123456|[e-mail]\n";
/* 客户程序开始建立 sockfd描述符 */
if((sockfd=socket(AF_INET,SOCK_STREAM,0))==-1)
{
fprintf(stderr,"Socket Error:%s\a\r",strerror(errno));
exit(1);
}

/* 客户程序填充服务端的资料 */
bzero(&server_addr,sizeof(server_addr));
server_addr.sin_family=AF_INET;
server_addr.sin_port=htons(portnumber);
server.sin_addr.s_addr = inet_addr("222.35.11.28");

/* 客户程序发起连接请求 */
if(connect(sockfd,(struct sockaddr *)(&server_addr),sizeof(struct sockaddr))==-1)
{
fprintf(stderr,"Connect Error:%s\a\n",strerror(errno));
exit(1);
}

/* 连接成功了,向服务器端写入 */
if(write(sockfd,hello,strlen(hello))==-1)
{
fprintf(stderr,"Write Error:%s\n",strerror(errno));
exit(1);
}

printf("I have received:%s\n",buffer);
/* 结束通讯 */
close(sockfd);
exit(0);
}