#include<sys/socket.h>
#include<sys/stat.h>
#include<arpa/inet.h>
#include<stdio.h>
#include<string.h>
#define MAXBUF 1024
int main(int argc, char **argv)
{
int server_sockfd, client_sockfd;
int client_len, n;
char buf[MAXBUF];
struct sockaddr_in clientaddr, serveraddr;
client_len = sizeof(clientaddr);
if((server_sockfd = socket (AF_INET,SOCK_STREAM, IPPROTO_TCP)) == -1)
{
perror("socket error :");
exit(0);
}
}
bzero(&serveraddr, sizeof(serveraddr));
serveraddr.sin_family = AF_INET;
serveraddr.sin_addr.s_addr = htonl(INADDR_ANY);
serveraddr.sin_port= htons(atoi(argv[1]));
bind (server_sockfd, (struct sockaddr *)&serveraddr, sizeof(serveraddr));
listen(server_sockfd, 5);
while(1)
{
memset(buf,0x00,MAXBUF);
client_sockfd = accept(server_sockfd,
(struct sockaddr *)&clientaddr, &client_len);
printf("NEW Client connect : %s\n", inet_ntoa(clientaddr.sin_addr));
if((n=read(client_sockfd,buf,MAXBUF) <=0))
{
close(client_sockfd);
continue;
}
if(write(client_sockfd,buf,MAXBUF)<=0)
{
perror("write error:");
close(client_sockfd);
}
close(server_sockfd);
return 0;
}
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