(Node.js) REST Download Binary File to Memory

See more REST Examples

Download a binary file to a Chilkat BinData object.

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

    var rest = new chilkat.Rest();
    var success;

    // We're going to download a sample MS-Word doc file.
    // The URLs of our MS-Word sample documents are:

    // https://www.chilkatdownload.com/sample_data/sample.doc
    // https://www.chilkatdownload.com/sample_data/sample.docx

    var pathPartOfUrl = "/sample_data/sample.doc";
    var domain = "chilkatdownload.com";

    var bTls = true;
    var port = 443;
    var bAutoReconnect = true;
    var success = rest.Connect(domain,port,bTls,bAutoReconnect);
    if (success !== true) {
        console.log(rest.LastErrorText);
        return;
    }

    var bd = new chilkat.BinData();
    success = rest.FullRequestNoBodyBd("GET",pathPartOfUrl,bd);
    if (success !== true) {
        console.log(rest.LastErrorText);
        return;
    }

    // A 200 response is expected for actual success.
    // If we don't get a 200 response, then the response body was not actually
    // the file data, but it was text containing error information.
    if (rest.ResponseStatusCode !== 200) {
        var sbErrorText = new chilkat.StringBuilder();
        sbErrorText.AppendBd(bd,"utf-8",0,0);
        console.log(sbErrorText.GetAsString());
        console.log("-- Failed.");
        return;
    }

    // Save to a local file.
    // Change the file path based on your operating system or needs...
    success = bd.WriteFile("c:/temp/qa_output/sample.doc");
    if (success !== true) {
        console.log("Failed to save to local file.");
        return;
    }

    console.log("REST Download of MS-Word File was successful.");

}

chilkatExample();