Route Socket Connections through an SSH Object

See more Socket/SSL/TLS Examples

Demonstrates Socket.UseSsh, which configures a socket to route subsequent Connect calls through an already connected and authenticated Ssh object using SSH port forwarding.

func chilkatTest() {
    var success: Bool = false

    let ssh = CkoSsh()!

    //  Connect and authenticate a standalone SSH object.
    success = ssh.connect(hostname: "ssh.example.com", port: 22)
    if success == false {
        print("\(ssh.lastErrorText!)")
        return
    }

    //  The SSH password should come from a secure source rather than being hard-coded.
    var sshPassword: String? = "mySshPassword"
    success = ssh.authenticatePw(login: "sshUser", password: sshPassword)
    if success == false {
        print("\(ssh.lastErrorText!)")
        return
    }

    let socket = CkoSocket()!

    //  Route subsequent Connect calls through the already connected and authenticated SSH object.  The
    //  destination is reached by SSH port forwarding rather than by a direct TCP connection.
    success = socket.useSsh(ssh: ssh)
    if success == false {
        print("\(socket.lastErrorText!)")
        return
    }

    //  Connect to the destination through the SSH tunnel.
    var bTls: Bool = false
    var maxWaitMs: Int = 5000
    success = socket.connect(hostname: "db.internal", port: 5432, ssl: bTls, maxWaitMs: maxWaitMs)
    if success == false {
        print("\(socket.lastErrorText!)")
        return
    }

    print("Connected to the destination through the SSH tunnel.")

}