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Home ► Lab Exercise ► Network Lab Exercise Programs► Implementation Of Simple FTP client▼
Implementation Of Simple FTP client: |
Algorithm Steps:
Step 1: start
Step 2: Create a socket with address family AE_INET type SOCK_STREAM and default protocol.
Step 3: Initialize the socket and set its attribute set required port no.
Step 4: Connect to server using connect () function to initiate the request.
Step 5: Receive the string from the server and print it at the console.
Step 6: stop.
C Program To Implement Simple FTP client
#include
#include
#include
#include
#include
#include
#define PORT_TIME 13 /* "time" (not available on RedHat) */
#define PORT_FTP 21 /* FTP connection port */
#define SERVER_ADDR "127.0.0.1" /* localhost */
#define MAXBUF 1024
int main()
{ int sockfd;
struct sockaddr_in dest;
char buffer[MAXBUF];
/*---Open socket for streaming---*/
if ( (sockfd = socket(AF_INET, SOCK_STREAM, 0)) < 0 )
{
perror("Socket");
exit(errno);
}
/*---Initialize server address/port struct---*/
bzero(&dest, sizeof(dest));
dest.sin_family = AF_INET;
dest.sin_port = htons(PORT_FTP);
if ( inet_aton(SERVER_ADDR, &dest.sin_addr.s_addr) == 0 )
{
perror(SERVER_ADDR);
exit(errno);
}
/*---Connect to server---*/
if ( connect(sockfd, (struct sockaddr*)&dest, sizeof(dest)) != 0 )
{
perror("Connect ");
exit(errno);
}
/*---Get "Hello?"---*/
bzero(buffer, MAXBUF);
recv(sockfd, buffer, sizeof(buffer), 0);
printf("%s", buffer);
/*---Clean up---*/
close(sockfd);
return 0;
}
SAMPLE INPUT OUTPUT:
$ gcc Ftpclient.c -o Ftpclient.exe
$ Ftpclient.exe
220 Microsoft FTP Service
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