Unable to get data from HTTP response using UnityWebRequest in Unity

Question

Hi Unity and Microsoft PRO! I am trying to use the Microsoft Bing Text to Speech API in Unity , this API requires an AccessToken , which will be passed in the request header. to get this token, I sent my authentication key to the “Ocp-Apim-Subscription-Key” header, and the API will return an access token, which I can use next, is an API test that reconfigures the token in Postman.

So, this is the code for this, but it does not work.

using System.Collections; using System.Collections.Generic; using System.Xml.Linq; using UnityEngine; using UnityEngine.Networking; public class Test : MonoBehaviour { public static readonly string accessUri = "https://api.cognitive.microsoft.com/sts/v1.0/issueToken"; public string accessToken; public void Start() { WWWForm wwwForm = new WWWForm(); Dictionary<string, string> headers = wwwForm.headers; headers["Ocp-Apim-Subscription-Key"] = "a66ec1e2123784hf39f22e2dc2e760d13x"; UnityWebRequest www = UnityWebRequest.Post(accessUri, wwwForm); StartCoroutine(RequestToken(www)); } public IEnumerator RequestToken(UnityWebRequest www) { yield return www; if (www.error == null) { Debug.Log("downloadedBytes : " + www.downloadedBytes); Debug.Log("certificateHandler : " + www.certificateHandler); Debug.Log("chunkedTransfer : " + www.chunkedTransfer); Debug.Log("downloadHandler : " + www.downloadHandler); Debug.Log("downloadProgress : " + www.downloadProgress); Debug.Log("isDone : " + www.isDone); Debug.Log("isNetworkError : " + www.isNetworkError); Debug.Log("method : " + www.method); Debug.Log("redirectLimit : " + www.redirectLimit); Debug.Log("responseCode : " + www.responseCode); Debug.Log("uploadedBytes : " + www.uploadedBytes); Debug.Log("useHttpContinue : " + www.useHttpContinue); } else { Debug.Log("Error" + www.error); } var p = www.downloadHandler.data; Debug.Log("Access token: " + p); } } 

Result of this code:

I already tried the WWW class , but it did not work! and System.Net.Http , but Unity will not accept this library: /

Is there a way to do this, please?

Answer 1

I think you need the operator www.SendWebRequest() . Your code simply indicates yield return www; , not yield return www.SendWebRequest() .

See this sample code (from the UnityEngine.Networking.UnityWebRequest.Post Documentation ):

 using UnityEngine; using UnityEngine.Networking; using System.Collections; public class MyBehavior : MonoBehaviour { void Start() { StartCoroutine(Upload()); } IEnumerator Upload() { WWWForm form = new WWWForm(); form.AddField("myField", "myData"); using (UnityWebRequest www = UnityWebRequest.Post("http://www.my-server.com/myform", form)) { yield return www.SendWebRequest(); if (www.isNetworkError || www.isHttpError) { Debug.Log(www.error); } else { Debug.Log("Form upload complete!"); } } } } 

(Also, as regards the output message Access token: System.Byte[] with your code, note that instead of debugging the output, use the DownloadHandler.text property rather than DownloadHandler.data . Currently, it just prints the property type, and not its actual content.)

EDIT: Please note that I debugged the problem this way because www.isDone is false and www.downloadProgress is -1. This means that the www request was never sent or ended correctly. If this was a mistake, I think that www.isDone probably be true with errors provided elsewhere.

Answer 2

Try adding them to your request.

 request.Accept = @"application/json;text/xml"; request.ContentType = @"audio/wav; codec=audio/pcm; samplerate=16000"; 

and check if it works.