Close an SSH Tunnel

See more Socket/SSL/TLS Examples

Demonstrates Socket.SshCloseTunnel, which closes the SSH tunnel opened by SshOpenTunnel and terminates its forwarded channels.

#import <CkoSocket.h>
#import <NSString.h>

BOOL success = NO;

CkoSocket *socket = [[CkoSocket alloc] init];

//  Connect to the SSH server and initialize an SSH tunneling session.  Port 22 is conventional but
//  not required.
success = [socket SshOpenTunnel: @"ssh.example.com" sshPort: [NSNumber numberWithInt: 22]];
if (success == NO) {
    NSLog(@"%@",socket.LastErrorText);
    return;
}

//  Authenticate the SSH session before opening forwarded channels.
//  The SSH password should come from a secure source rather than being hard-coded.
NSString *sshPassword = @"mySshPassword";
success = [socket SshAuthenticatePw: @"sshUser" sshPassword: sshPassword];
if (success == NO) {
    NSLog(@"%@",socket.LastErrorText);
    return;
}

//  Close the SSH tunnel and terminate its forwarded channels.  This does not affect unrelated SSH
//  objects or connections.
success = [socket SshCloseTunnel];
if (success == NO) {
    NSLog(@"%@",socket.LastErrorText);
    return;
}

NSLog(@"%@",@"SSH tunnel closed.");