(Objective-C) SFTP using SOCKS Proxy

Demonstrates how to connect to an SFTP/SSH server through a SOCKS4 or SOCKS5 proxy.

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#import <CkoSFtp.h>
#import <NSString.h>

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

CkoSFtp *sftp = [[CkoSFtp alloc] init];

// 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:
sftp.SocksHostname = @"www.mysocksproxyserver.com";
sftp.SocksPort = [NSNumber numberWithInt:1080];
sftp.SocksUsername = @"myProxyLogin";
sftp.SocksPassword = @"myProxyPassword";

// Set the SOCKS version to 4 or 5 based on the version
// of the SOCKS proxy server:
sftp.SocksVersion = [NSNumber numberWithInt:5];

// Note: SOCKS4 servers only support usernames without passwords.
// SOCKS5 servers support full login/password authentication.

// Connect to the SSH server.  
// The standard SSH port = 22
// The hostname may be a hostname or IP address.
NSString *hostname = @"sftp.example.com";
int port = 22;
BOOL success = [sftp Connect: hostname port: [NSNumber numberWithInt: port]];
if (success != YES) {
    NSLog(@"%@",sftp.LastErrorText);
    return;
}

// Your application is now connected to an SFTP/SSH server 
// through a SOCKS4 or SOCKS5 proxy. 
// ..