Xbase++ Requires Chilkat v11.1.0+

Creating an application/json HTTP POST Request

See more HTTP Examples

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"
      }
    ]
  }
}

Xbase++

LOCAL oReq
LOCAL oJson
LOCAL oVFactors
LOCAL oVArray
LOCAL oFactorObj
LOCAL cRequestMime

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

oReq := CreateObject("Chilkat.HttpRequest")

//  The ContentType, HttpVerb, and Path properties should
//  always be explicitly set.
oReq:HttpVerb := "POST"
oReq:Path := "/something"
oReq: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.
oReq:AddHeader("Accept", "application/json")

//  We'll use Chilkat's JSON API to create the JSON body of the HTTP request.
oJson := CreateObject("Chilkat.JsonObject")
oJson:AppendString("username", "my_username")
oJson:AppendString("password", "my_password")

oVFactors := CreateObject("Chilkat.JsonObject")
oJson:AppendObject2("validation-factors", oVFactors)

oVArray := CreateObject("Chilkat.JsonArray")
oVFactors:AppendArray2("validationFactors", oVArray)

oFactorObj := CreateObject("Chilkat.JsonObject")
oVArray:AddObjectAt2(0, oFactorObj)
oFactorObj:AppendString("name", "remote_address")
oFactorObj: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
oJson:EmitCompact := 0
oReq:LoadBodyFromString(oJson:Emit(), "utf-8")

//  View the request that would be sent if HttpSReq was called:
cRequestMime := oReq:GenerateRequestText()
? cRequestMime

//  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.

oReq:destroy()
oJson:destroy()
oVFactors:destroy()
oVArray:destroy()
oFactorObj:destroy()