Node.js

Multiple Hop SSH to SFTP

See more SFTP Examples

Demonstrates how to SFTP through an intermediate SSH server (multiple hop). The scheme looks like this:

Application => ServerSSH1 => ServerSFtp

The ConnectThroughSsh method is added in Chilkat version 9.5.0.55 to accomplish this task.

Node.js

NODEJS_PRELUDE

function chilkatExample() {

    var success = false;

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

    var ssh1 = new chilkat.Ssh();

    //  Hostname may be an IP address or domain name:
    var hostname = "192.168.1.111";
    var port = 22;

    //  Connect directly to the 1st SSH server:
    success = ssh1.Connect(hostname,port);
    if (success !== true) {
        console.log(ssh1.LastErrorText);
        return;
    }

    //  Authenticate using login/password:
    success = ssh1.AuthenticatePw("myLogin","myPassword");
    if (success !== true) {
        console.log(ssh1.LastErrorText);
        return;
    }

    //  Connect through the 1st SSH connection to reach a 2nd SSH server (for SFTP)
    //  Note: Any number of connections may be simultaneously tunneled through a single
    //  existing SSH connection.
    var sftp = new chilkat.SFtp();

    //  Connect to some SSH/SFTP server through ssh1.
    success = sftp.ConnectThroughSsh(ssh1,"sftp.someremoteserver.com",22);
    if (success !== true) {
        console.log(sftp.LastErrorText);
        return;
    }

    //  Authenticate with the SFTP server. 
    success = sftp.AuthenticatePw("myLogin","myPassword");
    if (success !== true) {
        console.log(sftp.LastErrorText);
        return;
    }

    //  After authenticating, the SFTP subsystem must be initialized:
    success = sftp.InitializeSftp();
    if (success !== true) {
        console.log(sftp.LastErrorText);
        return;
    }

    //  Upload from the local file to the SSH server.
    //  Important -- the remote filepath is the 1st argument,
    //  the local filepath is the 2nd argument;
    var remoteFilePath = "hamlet.xml";
    var localFilePath = "c:/temp/hamlet.xml";

    success = sftp.UploadFileByName(remoteFilePath,localFilePath);
    if (success !== true) {
        console.log(sftp.LastErrorText);
        return;
    }

    console.log("Success.");

    //  Close the connection with the SFTP server.(This closes the the tunnel through ssh1.)
    //  The connection with ssh1 is still alive, and may be used for more connections.
    sftp.Disconnect();

    //  ...
    //  ...
    //  ...

    ssh1.Disconnect();

}

chilkatExample();