@@ -7,6 +7,10 @@ public enum AuthErrorReason
 /// </summary>
 Undefined,
 /// <summary>
+/// The sign in method is not enabled.
+/// </summary>
+OperationNotAllowed,
+/// <summary>
 /// The user was disabled and is not granted access anymore.
 /// </summary>
 UserDisabled,
@@ -63,10 +67,18 @@ public enum AuthErrorReason
 /// </summary>
 WrongPassword,
 /// <summary>
+/// Email/Password Signin: Too many password login have been attempted. Try again later.
+/// </summary>
+TooManyAttemptsTryLater,
+/// <summary>
 /// Password Recovery: Request does not contain a value for parameter: requestType or supplied value is invalid.
 /// </summary>
 MissingRequestType,
 /// <summary>
+/// Password Recovery: Reset password limit exceeded.
+/// </summary>
+ResetPasswordExceedLimit,
+/// <summary>
 /// Account Linking: Authenticated User ID Token is invalid!
 /// </summary>
 InvalidIDToken,

@@ -105,6 +105,21 @@ public async Task<FirebaseAuthLink> SignInWithOAuthAsync(FirebaseAuthType authTy
 return await this.ExecuteWithPostContentAsync(GoogleIdentityUrl, content).ConfigureAwait(false);
 }
 
+/// <summary>
+/// Using the provided Id token from google signin, get the firebase auth with token and basic user credentials.
+/// </summary>
+/// <param name="authType"> The auth type. </param>
+/// <param name="oauthAccessToken"> The access token retrieved from twitter. </param>
+/// <param name="oauthAccessToken"> The access token secret supplied by twitter. </param>
+/// <returns> The <see cref="FirebaseAuth"/>. </returns>
+public async Task<FirebaseAuthLink> SignInWithOAuthTwitterTokenAsync(string oauthAccessToken, string oauthTokenSecret)
+{
+var providerId = this.GetProviderId(FirebaseAuthType.Twitter);
+var content = $"{{\"postBody\":\"access_token={oauthAccessToken}&oauth_token_secret={oauthTokenSecret}&providerId={providerId}\",\"requestUri\":\"http://localhost\",\"returnSecureToken\":true}}";
+
+return await this.ExecuteWithPostContentAsync(GoogleIdentityUrl, content).ConfigureAwait(false);
+}
+
 /// <summary>
 /// Using the provided Id token from google signin, get the firebase auth with token and basic user credentials.
 /// </summary>
@@ -263,10 +278,20 @@ public async Task DeleteUserAsync(string firebaseToken)
 public async Task SendPasswordResetEmailAsync(string email)
 {
 var content = $"{{\"requestType\":\"PASSWORD_RESET\",\"email\":\"{email}\"}}";
-
-var response = await this.client.PostAsync(new Uri(string.Format(GoogleGetConfirmationCodeUrl, this.authConfig.ApiKey)), new StringContent(content, Encoding.UTF8, "application/json")).ConfigureAwait(false);
-
-response.EnsureSuccessStatusCode();
+var responseData = "N/A";
+
+try
+{
+var response = await this.client.PostAsync(new Uri(string.Format(GoogleGetConfirmationCodeUrl, this.authConfig.ApiKey)), new StringContent(content, Encoding.UTF8, "application/json")).ConfigureAwait(false);
+responseData = await response.Content.ReadAsStringAsync().ConfigureAwait(false);
+
+response.EnsureSuccessStatusCode();
+}
+catch (Exception ex)
+{
+AuthErrorReason errorReason = GetFailureReason(responseData);
+throw new FirebaseAuthException(GoogleGetConfirmationCodeUrl, content, responseData, ex, errorReason);
+}
 }
 
 /// <summary>
@@ -494,6 +519,10 @@ private static AuthErrorReason GetFailureReason(string responseData)
 failureReason = AuthErrorReason.LoginCredentialsTooOld;
 break;
 
+case "OPERATION_NOT_ALLOWED":
+failureReason = AuthErrorReason.OperationNotAllowed;
+break;
+
 //possible errors from Third Party Authentication using GoogleIdentityUrl
 case "INVALID_PROVIDER_ID : Provider Id is not supported.":
 failureReason = AuthErrorReason.InvalidProviderID;
@@ -514,9 +543,6 @@ private static AuthErrorReason GetFailureReason(string responseData)
 break;
 
 //possible errors from Email/Password Account Signup (via signupNewUser or setAccountInfo)
-case "WEAK_PASSWORD : Password should be at least 6 characters":
-failureReason = AuthErrorReason.WeakPassword;
-break;
 case "EMAIL_EXISTS":
 failureReason = AuthErrorReason.EmailExists;
 break;
@@ -541,6 +567,9 @@ private static AuthErrorReason GetFailureReason(string responseData)
 case "MISSING_EMAIL":
 failureReason = AuthErrorReason.MissingEmail;
 break;
+case "RESET_PASSWORD_EXCEED_LIMIT":
+failureReason = AuthErrorReason.ResetPasswordExceedLimit;
+break;
 
 //possible errors from Password Recovery
 case "MISSING_REQ_TYPE":
@@ -563,6 +592,14 @@ private static AuthErrorReason GetFailureReason(string responseData)
 failureReason = AuthErrorReason.AlreadyLinked;
 break;
 }
+
+if(failureReason == AuthErrorReason.Undefined)
+{
+//possible errors from Email/Password Account Signup (via signupNewUser or setAccountInfo)
+if(errorData?.error?.message?.StartsWith("WEAK_PASSWORD :") ?? false) failureReason = AuthErrorReason.WeakPassword;
+//possible errors from Email/Password Signin
+else if (errorData?.error?.message?.StartsWith("TOO_MANY_ATTEMPTS_TRY_LATER :") ?? false) failureReason = AuthErrorReason.TooManyAttemptsTryLater;
+}
 }
 }
 catch (JsonReaderException)