(Node.js) Creating an application/json HTTP POST Request

Demonstrates how to create an HTTP POST request having the Content-Type application/json, where the body of the HTTP request is the following JSON:

{
   "username" : "my_username",
   "password" : "my_password",
   "validation-factors" : {
      "validationFactors" : [
         {
            "name" : "remote_address",
            "value" : "127.0.0.1"
         }
      ]
   }
}

The generated HTTP request looks like this:

POST /something HTTP/1.1
Content-Type: application/json
Accept: application/json
Host: domain
Content-Length: 216

{
  "username": "my_username",
  "password": "my_password",
  "validation-factors": {
    "validationFactors": [
      {
        "name": "remote_address",
        "value": "127.0.0.1"
      }
    ]
  }
}

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 demonstrates building an application/json request.

    var req = new chilkat.HttpRequest();

    // The ContentType, HttpVerb, and Path properties should
    // always be explicitly set.
    req.HttpVerb = "POST";
    req.Path = "/something";
    req.ContentType = "application/json";

    // We may wish to add an "Accept" header to the request.
    // This tells the server we'll accept an application/json response.
    req.AddHeader("Accept","application/json");

    // We'll use Chilkat's JSON API to create the JSON body of the HTTP request.
    var json = new chilkat.JsonObject();
    json.AppendString("username","my_username");
    json.AppendString("password","my_password");
    // vFactors: JsonObject
    var vFactors = json.AppendObject("validation-factors");
    // vArray: JsonArray
    var vArray = vFactors.AppendArray("validationFactors");
    vArray.AddObjectAt(0);
    // factorObj: JsonObject
    var factorObj = vArray.ObjectAt(0);
    factorObj.AppendString("name","remote_address");
    factorObj.AppendString("value","127.0.0.1");

    // Use the JSON for the HTTP request body
    // By default, the Emit method will output compact JSON.
    // This is best for generating the smallest size request.
    // To generate a more human-readable (pretty-printed) JSON request body,
    // set the EmitCompact property to FALSE
    json.EmitCompact = false;
    req.LoadBodyFromString(json.Emit(),"utf-8");

    // View the request that would be sent if SynchronousRequest was called:
    var requestMime = req.GenerateRequestText();
    console.log(requestMime);

    // A few important comments about the HTTP request that is generated:
    // 
    // 1) The Content-Length header is automatically generated based on the actual length of the MIME message
    //    that follows the intial (topmost) MIME header.
    // 2) The HOST header will automatically get filled in with the actual domain when SynchronousRequest
    //    is called

}

chilkatExample();