(Perl) Multiple Hop SSH to SFTP

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.

Chilkat Perl Downloads Perl Module for Windows, MacOS, Linux, Alpine Linux, Solaris

use chilkat();

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

$ssh1 = chilkat::CkSsh->new();

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

# Connect directly to the 1st SSH server:
$success = $ssh1->Connect($hostname,$port);
if ($success != 1) {
    print $ssh1->lastErrorText() . "\r\n";
    exit;
}

# Authenticate using login/password:
$success = $ssh1->AuthenticatePw("myLogin","myPassword");
if ($success != 1) {
    print $ssh1->lastErrorText() . "\r\n";
    exit;
}

# 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.
$sftp = chilkat::CkSFtp->new();

# Connect to some SSH/SFTP server through ssh1.
$success = $sftp->ConnectThroughSsh($ssh1,"sftp.someremoteserver.com",22);
if ($success != 1) {
    print $sftp->lastErrorText() . "\r\n";
    exit;
}

# Authenticate with the SFTP server. 
$success = $sftp->AuthenticatePw("myLogin","myPassword");
if ($success != 1) {
    print $sftp->lastErrorText() . "\r\n";
    exit;
}

# After authenticating, the SFTP subsystem must be initialized:
$success = $sftp->InitializeSftp();
if ($success != 1) {
    print $sftp->lastErrorText() . "\r\n";
    exit;
}

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

$success = $sftp->UploadFileByName($remoteFilePath,$localFilePath);
if ($success != 1) {
    print $sftp->lastErrorText() . "\r\n";
    exit;
}

print "Success." . "\r\n";

# 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();