Sending a form to an HTTP server (POST) Using IMultipartFormSection

Sending a form to an HTTP server (POST) Using IMultipartFormSection

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Networking;
using Newtonsoft.Json;
 
//[System.Serializable]
public class add_person
{
    public string firstName;
    public string lastName;
    public int age;
 
    public add_person(string firstName, string lastName, int age)
    {
        this.firstName = firstName;
        this.lastName = lastName;
        this.age = age;
    }
}
 
public class Test : MonoBehaviour {
    
    public object[] Encording { get; private set; }
    private List<PersonData> personDataList;
 
    // Use this for initialization
    void Start () {
        
    }
 
    IEnumerator AddPerson(PersonData personData)
    {
        var add_person = new add_person(personData.firstName, personData.lastName, personData.age);
 
        var json = JsonConvert.SerializeObject(add_person);
 
        Debug.LogFormat("{0}", json);
 
        List<IMultipartFormSection> formData = new List<IMultipartFormSection>();
        formData.Add(new MultipartFormDataSection("data", json));
 
        UnityWebRequest www = UnityWebRequest.Post("localhost:3000/addPerson", formData);
        yield return www.SendWebRequest();
 
        if (www.isNetworkError || www.isHttpError)
        {
            Debug.LogFormat("{0}", www.error);
        }
        else {
            Debug.LogFormat("{0}", www.downloadHandler.text);
        }
 
        
    }
 
    IEnumerator GetPersons()
    {
        using (UnityWebRequest www = UnityWebRequest.Get("localhost:3000/personList"))
        {
            yield return www.SendWebRequest();
 
            if (www.isNetworkError || www.isHttpError)
            {
                Debug.Log(www.error);
            }
            else {
                Debug.Log(www.downloadHandler.text);
 
                byte[] results = www.downloadHandler.data;
 
                var json = System.Text.Encoding.Default.GetString(results);
 
                Debug.LogFormat("{0} {1}", results.Length, json);
 
                this.personDataList = JsonConvert.DeserializeObject<List<PersonData>>(json);
 
                foreach (var data in this.personDataList)
                {
                    Debug.LogFormat("{0}, {1}, {2}, {3}", data.id, data.firstName, data.lastName, data.age);
                }
            }
        }
    }
 
    // server side post data is null ?
    //https://stackoverflow.com/questions/43292700/unitywebrequest-downloadhandler-returning-null-while-getting-response-from-node?rq=1
    IEnumerator Post(string uri , string b)
    {
 
        byte[] bytes = System.Text.Encoding.ASCII.GetBytes(b);
 
        using (UnityWebRequest www = new UnityWebRequest(uri, UnityWebRequest.kHttpVerbPOST))
        {
            UploadHandlerRaw uH = new UploadHandlerRaw(bytes);
            DownloadHandlerBuffer dH = new DownloadHandlerBuffer();
 
            www.uploadHandler = uH;
            www.downloadHandler = dH;
            www.SetRequestHeader("Content-Type", "application/json");
            yield return www.SendWebRequest();
 
            if (www.isHttpError || www.isNetworkError)
            {
                Debug.Log(www.error);
            }
            else
            {
                Debug.Log(www.ToString());
                Debug.Log(www.downloadHandler.text);
            }
        }
    }
 
 
    private void OnGUI()
    {
        if (GUILayout.Button("GET", GUILayout.Width(100), GUILayout.Height(60)))
        {
            StartCoroutine(GetPersons());
        }
 
        if (GUILayout.Button("POST", GUILayout.Width(100), GUILayout.Height(60)))
        {
            var personData = new PersonData("aaaaaaa", "bbbbbb", 1234);
            //StartCoroutine(AddPerson(personData));
            var json = JsonConvert.SerializeObject(personData);
            StartCoroutine(this.Post("localhost:3000/addPerson", json));
        }
    }
}