createSession() API code refractored.

Signed-off-by: Gaurav Goel <[email protected]>

Author: grvgoel81

Assets/Plugins/Web3AuthSDK/Web3Auth.cs

@@ -470,6 +470,7 @@ private void sessionTimeOutAPI()
     }
 
     private async Task<string> createSession(string data, long sessionTime) {
+        TaskCompletionSource<string> createSessionResponse = new TaskCompletionSource<string>();
         var newSessionKey = KeyStoreManagerUtils.generateRandomSessionKey();
         var ephemKey = KeyStoreManagerUtils.getPubKey(newSessionKey);
         var ivKey = KeyStoreManagerUtils.generateRandomBytes();
@@ -506,17 +507,19 @@ private async Task<string> createSession(string data, long sessionTime) {
                     try
                     {
                         this.Enqueue(() => KeyStoreManagerUtils.savePreferenceData(KeyStoreManagerUtils.SESSION_ID, newSessionKey));
+                        createSessionResponse.SetResult(newSessionKey);
                     }
                     catch (Exception ex)
                     {
-                        newSessionKey = null;
+                        createSessionResponse.SetException(new Exception("Something went wrong. Please try again later."));
                         Debug.LogError(ex.Message);
                     }
+                } else {
+                    createSessionResponse.SetException(new Exception("Something went wrong. Please try again later."));
                 }
             }
         ));
-        await Task.Delay(200);
-        return newSessionKey;
+        return await createSessionResponse.Task;
     }
 
     public string getPrivKey()