Objective-C

SOCKS4 and SOCKS5 Proxy for FTP

See more FTP Examples

Demonstrates how to connect to an FTP server through a SOCKS4 or SOCKS5 proxy. Both SSL/TLS and non-secure FTP communications may use SOCKS4 and SOCKS5 proxies. Objective-C

#import <CkoFtp2.h>
#import <NSString.h>

BOOL success = NO;

//  This example requires the Chilkat API to have been previously unlocked.
//  See Global Unlock Sample for sample code.

CkoFtp2 *ftp = [[CkoFtp2 alloc] init];

ftp.Hostname = @"ftp.example.com";
ftp.Username = @"login";
ftp.Password = @"password";

//  To use a SOCKS4 or SOCKS5 proxy, simply set the following
//  properties prior to connecting:
//  The SOCKS hostname may be a domain name or 
//  IP address:
ftp.SocksHostname = @"www.mysocksproxyserver.com";
ftp.SocksPort = [NSNumber numberWithInt:1080];
ftp.SocksUsername = @"myProxyLogin";
ftp.SocksPassword = @"myProxyPassword";
//  Set the SOCKS version to 4 or 5 based on the version
//  of the SOCKS proxy server:
ftp.SocksVersion = [NSNumber numberWithInt:5];
//  Note: SOCKS4 servers only support usernames without passwords.
//  SOCKS5 servers support full login/password authentication.

//  Connect and login to the FTP server.
success = [ftp Connect];
if (success != YES) {
    NSLog(@"%@",ftp.LastErrorText);
    return;
}

//  Change to the remote directory where the file is located.
//  This step is only necessary if the file is not in the root directory
//  for the FTP account.
success = [ftp ChangeRemoteDir: @"junk"];
if (success != YES) {
    NSLog(@"%@",ftp.LastErrorText);
    return;
}

//  Download a file.
NSString *localFilename = @"c:/temp/hamlet.xml";
NSString *remoteFilename = @"hamlet.xml";

success = [ftp GetFile: remoteFilename localPath: localFilename];
if (success != YES) {
    NSLog(@"%@",ftp.LastErrorText);
    return;
}

success = [ftp Disconnect];

NSLog(@"%@",@"File Downloaded!");