Why UnityWebRequest send empty fields? - php

Question

I'm facing a frustrating problem right now and I can't see any reason why this doesn't work since is pure Unity developer copy paste code.
I can't send data from Unity to website. Every Unity sent parameter is taken as empty.
That's how my [Web.cs] looks like:
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using UnityEngine;
using UnityEngine.Networking;
public class Web : MonoBehaviour
{
public IEnumerator Login(string Username, string Password)
{
Debug.Log(Username);
Debug.Log(Password);
WWWForm Form = new WWWForm();
Form.AddField("loginUser", Username);
Form.AddField("loginPass", Password);
UnityWebRequest www = UnityWebRequest.Post("http://localhost/Login.php", Form);
yield return www.SendWebRequest();
if (www.isNetworkError || www.isHttpError)
Debug.Log(www.error);
else
{
Debug.Log("Form upload complete!");
Debug.Log(www.downloadHandler.text);
}
}
}
And I'm calling it via Login.cs
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
public class Login : MonoBehaviour
{
public InputField UserName;
public InputField Password;
public Button myButton;
private void Start()
{
myButton.onClick.AddListener(() =>
{
StartCoroutine(Main.Instance.Web.Login(UserName.text, Password.text));
});
}
}
The php code looks like:
<?php
$UserName = $_GET["loginUser"];
$Password = $_GET["loginPass"];
$myfile = fopen("testfile.txt", "a");
fwrite($myfile, "Username: $UserName\nPassowrd: $Password\n\n");
?>
So, when I manually acces the path link, I get the expected results:
http://localhost/Login.php?loginUser=Test&loginPass=Ok
https://i.imgur.com/s0bP5tJ.png
But when I do it with Unity, XAMPP writes the parameters as empty.
A debug photo:
https://i.imgur.com/r1IUTy2.png

Answer 1

It appears you're sending a POST request to a GET request.
Try this: UnityWebRequest.Get(...)

Answer 2

#Kale, thank you, I kinda still don't understand what's the difference between post and get methods :-?
For future searchers, that's how I managed to resolve the issue:
public class Web : MonoBehaviour
{
public IEnumerator Login(string Username, string Password)
{
WWWForm Form = new WWWForm();
string Link = "http://localhost/Login.php?loginUser=" + Username + "&loginPass=" + Password;
UnityWebRequest www = UnityWebRequest.Get(Link);
yield return www.SendWebRequest();
if (www.isNetworkError || www.isHttpError)
Debug.Log(www.error);
else
{
Debug.Log("Form upload complete!");
Debug.Log(www.downloadHandler.text);
}
}
}