server.c
#include <stdio.h>
#include <netinet/in.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <fcntl.h>
#include <sys/stat.h>
int main()
{
int server_sockfd,client_sockfd,n;
int server_len,client_len;
struct sockaddr_in server_address;
struct sockaddr_in client_address;
// Loai bo cac ten hay lien ket socket khac truoc do neu co
// Dong thoi khoi tao socket moi cho trinh chu
server_sockfd=socket(AF_INET,SOCK_STREAM,0);
// Dat ten cho socket cua trinh chu
server_address.sin_family=AF_INET;
server_address.sin_addr.s_addr=inet_addr("127.0.0.1");
server_address.sin_port=htons(9782);
server_len=sizeof(server_address);
// Rang buoc ten voi socket vua tao ra
bind(server_sockfd,(struct sockaddr*)&server_address,server_len);
//Mo hang doi cho ket noi,cho fep dat hang doi toi da 5 ket noi
listen(server_sockfd,5);
//Lap lien tuc cho de ket noi trinh khach
while(1)
{
char GetFileName[50];
int f_read;
size_t rf;
char buf[1000];
printf("server dang cho ket noi\n");
//Cho va cap nhan ket noi
client_sockfd=accept(server_sockfd,(struct sockaddr*)&client_address,&client_len);
//Doc du lieu do trinh khach gui den
n=read(client_sockfd,&GetFileName,50);
// printf("Nhan yeu cau tu trinh khach :%d %s\n",n,GetFileName);
//Thuc hien yeu cau tu trinh khach
f_read=open(GetFileName,O_RDONLY);
if(f_read<0){
printf("Khong co file nao ten la %s",GetFileName);
exit(1);
}
while((rf=read(f_read,&buf,sizeof(buf)))>0)
write(client_sockfd,&buf,rf);
// write(client_sockfd,&ch,strlen(ch));
//Dong ket noi
close(f_read);
close(client_sockfd);
}
}