(Node.js) Async Methods Returning an String

Demonstrates how to call an asynchronous method that returns a string. This example sends an HTTPS GET request to a URL and gets the HTML response.

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

    var http = new chilkat.Http();

    // task: Task
    var task = http.QuickGetStrAsync("https://www.chilkatsoft.com/helloWorld.html");
    if (http.LastMethodSuccess == false) {
        console.log(http.LastErrorText);
        return;
    }

    // Start the background task.
    var success = task.Run();
    if (!success) {
        console.log(task.LastErrorText);

        return;
    }

    // The application is now free to do anything else
    // while the email is being sent.

    // For this example, we'll simply sleep and periodically
    // check to see if the HTTPS GET if finished.
    while (task.Finished !== true) {
        // Sleep 100 ms.
        task.SleepMs(100);
    }

    // A finished task could be one that was canceled, aborted, or truly finished.  

    // If the task was "canceled", it was canceled prior to actually starting.  This could
    // happen if the task was canceled while waiting in a thread pool queue to be scheduled by Chilkat's
    // background thread pool scheduler.  

    // If the task was "aborted", it indicates that it was canceled while running in a background thread.  
    // The ResultErrorText will likely indicate that the task was aborted.

    // If the task "completed", then it ran to completion, but the actual success/failure of the method
    // is determined by the result obtained via a GetResult* method.  (A "completed" task will
    // have a StatusInt equal to 7.   If the task finished, but was not completed, then it must've
    // been aborted or canceled:
    if (task.StatusInt !== 7) {
        console.log("Task did not complete.");
        console.log("task status: " + task.Status);

        return;
    }

    // The QuickGetStr method returns a string.  Therefore, after the task is finished,
    // we can get the string result by calling GetResultString.  This is the return value had
    // we called QuickGetStr synchronously.
    var html = task.GetResultString();

    console.log(html);


}

chilkatExample();