Asp net 4 5 rest apis work in unity android ios build but fails with unknown e

ASP.NET is a popular programming language used for developing web applications. It provides a powerful framework for building and interactive websites. In this article, we will explore the question of how to work with ASP.NET 4.5 REST APIs in Unity for Android and iOS builds, and address any potential issues that may arise.

To begin, let's take a look at the basic structure of an ASP.NET 4.5 REST API. The following code snippet demonstrates a simple API endpoint that returns a list of products:

public IHttpActionResult GetProducts()
    // Retrieve products from the database
    List products = _productRepository.GetProducts();

    // Return the list of products
    return Ok(products);

In this example, we define an HTTP GET method with the route “api/products”. When a client sends a GET request to this endpoint, the `GetProducts` method is invoked. Inside this method, we retrieve a list of products from the database and return it as a response using the `Ok` method.

Now, let's move on to integrating this ASP.NET REST API with Unity for Android and iOS builds. Unity is a popular game engine that also supports building applications for mobile platforms. To consume the REST API in Unity, we can make use of the UnityWebRequest class.

Unity Integration

To make HTTP from Unity, we need to import the `UnityEngine.Networking` namespace. Here's an example of how to make a GET request to the API endpoint we defined earlier:

using UnityEngine;
using UnityEngine.Networking;

public class ProductManager : MonoBehaviour
    private const string apiUrl = "http://your-api-url/api/products";

    void Start()

    IEnumerator GetProducts()
        using (UnityWebRequest webRequest = UnityWebRequest.Get(apiUrl))
            yield return webRequest.SendWebRequest();

            if (webRequest.result == UnityWebRequest.Result.Success)
                string response = webRequest.downloadHandler.text;
                // Process the response data
                Debug.LogError("Error: " + webRequest.error);

In this example, we create a `UnityWebRequest` object and use the `Get` method to send a GET request to the API endpoint. We then use the `yield return` statement to wait for the response. If the request is , we can access the response data using the `downloadHandler.text` property.

Handling Errors

When working with REST APIs, it's important to handle errors gracefully. In the previous example, we an error message if the request . However, it's also a good practice to handle different of errors and provide feedback to the user.

For example, if the API returns a 404 status code (Not Found), we can display a message indicating that the requested resource was not found. Similarly, if the API returns a 500 status code (Internal Server Error), we can display a generic error message and suggest the user try again later.


In this article, we explored how to work with ASP.NET 4.5 REST APIs in Unity for Android and iOS builds. We learned how to create a basic API endpoint in ASP.NET and consume it in Unity using the UnityWebRequest class. We also discussed the importance of handling errors when working with REST APIs.

By following these guidelines and best practices, you can integrate ASP.NET 4.5 REST APIs with Unity for Android and iOS builds, and create powerful and interactive applications.

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