Added support for handling throttling status codes

src/MultiplexedRestClient.ts

@@ -6,6 +6,7 @@ import { EndpointServerError } from './errors/EndpointServerError';
 import { AuthorizationError } from './errors/AuthorizationError';
 import { WellKnowMimeContentTypes } from './WellKnowMimeContentTypes';
 import { LoggerFactory } from './environments/environment';
+import { RequestThrottledError } from './errors/RequestThrottledError';
 
 const loggerFactory = new LoggerFactory();
 const logger = loggerFactory.build('verifalia');
@@ -78,15 +79,25 @@ export class MultiplexedRestClient {
                 continue;
             }
 
+            // Internal server error HTTP 5xx
+
             if (response.status >= 500 && response.status <= 599) {
                 errors.push(new EndpointServerError(`Endpoint ${baseUri} returned an HTTP ${response.status} status code.`));
                 continue;
             }
 
+            // Authentication / authorization error
+
             if (response.status === 401 || response.status === 403) {
                 throw new AuthorizationError(response.statusText);
             }
 
+            // Throttling
+
+            if (response.status === 429) {
+                throw new RequestThrottledError();
+            }
+
             return response;
         }
 

src/errors/RequestThrottledError.ts

@@ -0,0 +1,11 @@
+import { VerifaliaError } from "./VerifaliaError";
+
+/**
+ * Thrown in the event a request exceeded the maximum configured email validations rate or the maximum number
+ * of concurrent requests from the same IP address.
+ */
+export class RequestThrottledError extends VerifaliaError {
+    constructor() {
+        super(`The current request has been throttled; please try again later.`);
+    }
+}

src/index.ts

@@ -42,4 +42,5 @@ export { DailyUsageListingOptions } from './credits/models/DailyUsageListingOpti
 export { Balance } from './credits/models/Balance';
 export { DailyUsage } from './credits/models/DailyUsage';
 export { Direction } from './common/Direction';
-export { OperationCancelledError } from './errors/OperationCancelledError';
+export { OperationCancelledError } from './errors/OperationCancelledError';
+export { RequestThrottledError } from './errors/RequestThrottledError';

src/version.ts

@@ -1,2 +1,2 @@
 // generated by genversion
-export const version = '2.0.1'
+export const version = '2.1.0'