FTP CLIENT SERVER

 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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