SFTP Resume Download

Demonstrates how to resume an SFTP download from a previous partial download.

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//  Important: It is helpful to send the contents of the
//  sftp.LastErrorText property when requesting support.

Chilkat.SFtp sftp = new Chilkat.SFtp();

//  Any string automatically begins a fully-functional 30-day trial.
bool success;
success = sftp.UnlockComponent("Anything for 30-day trial");
if (success != true) {
    MessageBox.Show(sftp.LastErrorText);
    return;
}

//  Set some timeouts, in milliseconds:
sftp.ConnectTimeoutMs = 5000;
sftp.IdleTimeoutMs = 10000;

//  Connect to the SSH server.
//  The standard SSH port = 22
//  The hostname may be a hostname or IP address.
int port;
string hostname;
hostname = "www.my-ssh-server.com";
port = 22;
success = sftp.Connect(hostname,port);
if (success != true) {
    MessageBox.Show(sftp.LastErrorText);
    return;
}

//  Authenticate with the SSH server.  Chilkat SFTP supports
//  both password-based authenication as well as public-key
//  authentication.  This example uses password authenication.
success = sftp.AuthenticatePw("myLogin","myPassword");
if (success != true) {
    MessageBox.Show(sftp.LastErrorText);
    return;
}

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

//  Download the file:
string remoteFilePath;
string localFilePath;
localFilePath = "c:/temp/hamlet.xml";
remoteFilePath = "subdir1/subdir2/hamlet.xml";
//  The ResumeDownloadFileByName method will check
//  the local file and begin downloading the remote file
//  at the appropriate point.  For example, if the local
//  file is already 215624 bytes long, it will begin downloading
//  the remote file at the 215625'th byte -- appending to
//  the local file.
success = sftp.ResumeDownloadFileByName(remoteFilePath,localFilePath);
if (success != true) {
    MessageBox.Show(sftp.LastErrorText);
    return;
}

MessageBox.Show("Success.");