(Node.js) HttpPostJson2Async Example

Demonstrates use of the HttpPostJson2Async method.

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

    // See PostJson2 Example for the synchronous equivalent of this example.

    var http = new chilkat.Http();

    var success;

    // Sends a POST equivalent to the following CURL command:

    // curl -X POST https://sandbox.plaid.com/institutions/get \
    //   -H 'content-type: application/json' \
    //   -d '{
    //     "client_id": String,
    //     "secret":String,
    //     "count": Number,
    //     "offset": Number
    //   }'

    // Suppress some default headers that would automatically added..
    http.AcceptCharset = "";
    http.UserAgent = "";
    http.AcceptLanguage = "";
    http.AllowGzip = false;

    var jsonBody = "{\"client_id\": \"PLAID_CLIENT_ID\", \"secret\":\"PLAID_SECRET\", \"count\": 10, \"offset\": 0}";
    // task: Task
    var task = http.PostJson2Async("https://sandbox.plaid.com/institutions/get","application/json",jsonBody);
    if (http.LastMethodSuccess == false) {
        console.log(http.LastErrorText);
        return;
    }

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

        return;
    }

    // The application is now free to do anything else
    // while the HTTP POST is in progress

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

    // When we get here, the task is either finished successfully or not, or was canceled/aborted.

    // 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 getting the result of the underlying method call.
    // A task status of 7 indicates completion.
    if (task.StatusInt !== 7) {
        console.log("Task did not complete.");
        console.log("task status: " + task.Status);

        return;
    }

    // When called synchronously, the PostJson2 method returns an HTTP response object,
    // unless the method failed and there was no response to be had.
    // Check to see if PostJson2 method failed (and thus there is no response object).
    if (task.TaskSuccess == false) {
        console.log("The underlying task failed, and there is no HTTP response object.");
        console.log("The LastErrorText for the underlying method call is:");
        console.log(task.ResultErrorText);

        return;
    }

    // To get the HTTP response object, create a new instance and load it with the result from the task.
    var resp = new chilkat.HttpResponse();
    resp.LoadTaskResult(task);

    var statusCode = resp.StatusCode;
    console.log("Response status code = " + statusCode);

    // Examine the JSON response..
    var json = new chilkat.JsonObject();
    json.Load(resp.BodyStr);
    json.EmitCompact = false;
    console.log("JSON Response Body:");
    console.log(json.Emit());

}

chilkatExample();