(JavaScript) 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"
      }
    ]
  }
}

Note: This example requires Chilkat v11.1.0 or greater.

Note

This example is intended for running within a Chilkat.Js embedded JavaScript engine. All Chilkat JavaScript examples require Chilkat v11.4.0 or greater.

// This example demonstrates building an application/json request.

var req = new CkHttpRequest();

// 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 CkJsonObject();
json.AppendString("username","my_username");
json.AppendString("password","my_password");

var vFactors = new CkJsonObject();
json.AppendObject2("validation-factors",vFactors);

var vArray = new CkJsonArray();
vFactors.AppendArray2("validationFactors",vArray);

var factorObj = new CkJsonObject();
vArray.AddObjectAt2(0,factorObj);
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 HttpSReq 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 HttpSReq
//    is called