AIM:
To write a program for FTP client server.
ALGORITHM:
SERVER:
STEP 1: Start
STEP 2: Declare the variables for the socket
STEP 3: Specify the family, protocol, IP address and port number
STEP 4: Create a socket using socket() function
STEP 5: Bind the IP address and Port number
STEP 6: Listen and accept the client’s request for the connection
STEP 7: Establish the connection with the client
STEP 8: Close the socket
STEP 9: Stop
CLIENT:
STEP 1: Start
STEP 2: Declare the variables for the socket
STEP 3: Specify the family, protocol, IP address and port number
STEP 4: Create a socket using socket() function
STEP 5: Call the connect() function
STEP 6: Close the socket
STEP 7: Stop
SOURCE CODE:
SERVER:
#include<stdio.h>
#include<arpa/inet.h>
#include<sys/types.h>
#include<sys/socket.h>
#include<netinet/in.h>
#include<netdb.h>
#include<stdlib.h>
#include<string.h>
#include<unistd.h>
#define SERV_TCP_PORT 5035
#define MAX 60
int i, j, tem;
char buff[4096], t;
FILE *f1;
int main(int afg, char *argv)
{
int sockfd, newsockfd, clength;
struct sockaddr_in serv_addr,cli_addr;
char t[MAX], str[MAX];
strcpy(t,"exit");
sockfd=socket(AF_INET, SOCK_STREAM,0);
serv_addr.sin_family=AF_INET;
serv_addr.sin_addr.s_addr=INADDR_ANY;
serv_addr.sin_port=htons(SERV_TCP_PORT);
printf("\nBinded");
bind(sockfd,(struct sockaddr*)&serv_addr, sizeof(serv_addr));
printf("\nListening...");
listen(sockfd, 5);
clength=sizeof(cli_addr);
newsockfd=accept(sockfd,(struct sockaddr*) &cli_addr,&clength);
close(sockfd);
read(newsockfd, &str, MAX);
printf("\nClient message\n File Name : %s\n", str);
f1=fopen(str, "r");
while(fgets(buff, 4096, f1)!=NULL)
{
write(newsockfd, buff,MAX);
printf("\n");
}
fclose(f1);
printf("\nFile Transferred\n");
return 0;
}
CLIENT:
#include<stdio.h>
#include<sys/types.h>
#include<sys/socket.h>
#include<netinet/in.h>
#include<netdb.h>
#include<stdlib.h>
#include<string.h>
#include<unistd.h>
#define SERV_TCP_PORT 5035
#define MAX 60
int main(int arg,char*argv[])
{
int sockfd,n;
struct sockaddr_in serv_addr;
struct hostent*server;
char send[MAX],recvline[MAX],s[MAX],name[MAX];
sockfd=socket(AF_INET,SOCK_STREAM,0);
serv_addr.sin_family=AF_INET;
serv_addr.sin_addr.s_addr=inet_addr("127.0.0.1");
serv_addr.sin_port=htons(SERV_TCP_PORT);
connect(sockfd,(struct sockaddr*)&serv_addr,sizeof(serv_addr));
printf("\nEnter the source file name : \n");
scanf("%s",send);
write(sockfd,send,MAX);
while((n=read(sockfd,recvline,MAX))!=0)
{
printf("%s",recvline);
}
close(sockfd);
return 0;
}
OUTPUT:
SERVER:
CLIENT:
RESULT:
Thus the program for FTP client server was executed and the output was verified.
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