Unity: POST request using WWW class using JSON

Question

I am trying to make a POST request to restful web APIs in Unity.

The header would be Content-Type: application/json

An example of the raw data i

Answer 1

private void SendJson(string url, string json)
{
    StartCoroutine(PostRequestCoroutine(url, json, callback));
}

private IEnumerator PostRequestCoroutine(string url, string json)
{
    var jsonBinary = System.Text.Encoding.UTF8.GetBytes(json);    

    DownloadHandlerBuffer downloadHandlerBuffer = new DownloadHandlerBuffer();

    UploadHandlerRaw uploadHandlerRaw = new UploadHandlerRaw(jsonBinary);
    uploadHandlerRaw.contentType = "application/json";

    UnityWebRequest www = 
        new UnityWebRequest(url, "POST", downloadHandlerBuffer, uploadHandlerRaw);

    yield return www.SendWebRequest();

    if (www.isNetworkError)
        Debug.LogError(string.Format("{0}: {1}", www.url, www.error));
    else
       Debug.Log(string.Format("Response: {0}", www.downloadHandler.text));
}