(Node.js) SFTP Fsync -- Flush an Open File on the Server

Demonstrates how to flush the contents of an open file on the server. This example only works for servers that implement the fsync@openssh.com extension.

Note: This example requires Chilkat v9.5.0.71 or later.

Install Chilkat for Node.js and Electron using npm at Chilkat npm packages for Node.js Chilkat npm packages for Electron on Windows, Linux, MacOSX, and ARM

var os = require('os');
if (os.platform() == 'win32') {  
    if (os.arch() == 'ia32') {
        var chilkat = require('@chilkat/ck-node21-win-ia32');
    } else {
        var chilkat = require('@chilkat/ck-node21-win64'); 
    }
} else if (os.platform() == 'linux') {
    if (os.arch() == 'arm') {
        var chilkat = require('@chilkat/ck-node21-arm');
    } else if (os.arch() == 'x86') {
        var chilkat = require('@chilkat/ck-node21-linux32');
    } else {
        var chilkat = require('@chilkat/ck-node21-linux64');
    }
} else if (os.platform() == 'darwin') {
    if (os.arch() == 'arm64') {
        var chilkat = require('@chilkat/ck-node21-mac-m1');
    } else {
        var chilkat = require('@chilkat/ck-node21-macosx');
    }
}

function chilkatExample() {

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

    var sftp = new chilkat.SFtp();

    // Pass a domain or IP address..
    var success = sftp.Connect("my-sftp-server.com",22);
    if (success == true) {
        success = sftp.AuthenticatePw("mySFtpLogin","mySFtpPassword");
    }

    if (success == true) {
        success = sftp.InitializeSftp();
    }

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

    // Open a file on the server for writing.
    var handle = sftp.OpenFile("myTest.txt","writeOnly","createTruncate");
    if (sftp.LastMethodSuccess !== true) {
        console.log(sftp.LastErrorText);
        return;
    }

    // Write some text to the file:
    success = sftp.WriteFileText(handle,"ansi","abcdefghijklmnopqrstuvwxyz");
    if (success !== true) {
        console.log(sftp.LastErrorText);
        return;
    }

    // Make sure the server flushes what we wrote to the disk..
    // (this is requires a server that implements the fsync@openssh.com SFTP protocol extension)
    success = sftp.Fsync(handle);
    if (success !== true) {
        console.log(sftp.LastErrorText);
        return;
    }

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

    success = sftp.WriteFileText(handle,"ansi","ABCDEFGHIJKLMNOPQRSTUVWXYZ");
    if (success !== true) {
        console.log(sftp.LastErrorText);
        return;
    }

    // Close the file.
    success = sftp.CloseHandle(handle);
    if (success !== true) {
        console.log(sftp.LastErrorText);
        return;
    }

    console.log("Success.");

}

chilkatExample();