[Master][BUG] remove 403 as a “retriable” error code #2296

README.md

@@ -368,6 +368,7 @@ Most configuration fields are named such that they can be defaulted to falsey. A
 | disableIkeyDeprecationMessage | boolean | true | [Optional]  Disable instrumentation Key deprecation error message. If true, error message will NOT be sent. **Note: instrumentation key support will end soon**, see aka.ms/IkeyMigrate for more details.
 | bufferOverride <br/><sub>since 2.8.12</sub> | IStorageBuffer | undefined | [Optional] Identifies a simple interface to allow you to override the storage mechanism used for tracking unsent and unacknowledged events, when not provided defaults to using SessionStorage interface. You MUST supply both the `getItem` and `setItem` functions when defined.
 | storagePrefix (since v2.8.15)| string[] | undefined | [Optional] An optional value that will be added as name prefix for storage name.  ([design for system to correctly identifies these telemetry events as "necessary"](https://github.com/microsoft/ApplicationInsights-JS/issues/2094).) |
+| retryCodes | number[] | undefined | Identifies the status codes that will cause event batches to be resent, when `null` or `undefined` the SDK will use it's defaults `[401, 408, 429, 500, 502, 503, 504]`. `403` was removed in version 2.8.18. |
 
 ### ICookieMgrConfig
 

channels/applicationinsights-channel-js/src/Interfaces.ts

@@ -85,6 +85,11 @@ export interface ISenderConfig {
      * (Optional) The number of events that can be kept in memory before the SDK starts to drop events. By default, this is 10,000.
      */
     eventsLimitInMem: () => number;
+
+    /**
+     * (Optional) The specific error codes that will cause a retry of sending data to the backend.
+     */
+    retryCodes: () => number[];
 }
 
 export interface IBackendResponse {

channels/applicationinsights-channel-js/src/Sender.ts

@@ -7,9 +7,9 @@ import {
 import {
     BaseTelemetryPlugin, IAppInsightsCore, IConfiguration, IDiagnosticLogger, INotificationManager, IPlugin, IProcessTelemetryContext,
     IProcessTelemetryUnloadContext, ITelemetryItem, ITelemetryPluginChain, ITelemetryUnloadState, SendRequestReason, _eInternalMessageId,
-    _throwInternal, _warnToConsole, arrForEach, createUniqueNamespace, dateNow, dumpObj, eLoggingSeverity, getExceptionName, getIEVersion,
-    getJSON, getNavigator, getWindow, isArray, isBeaconsSupported, isFetchSupported, isNullOrUndefined, isXhrSupported, mergeEvtNamespace,
-    objForEachKey, objKeys, useXDomainRequest
+    _throwInternal, _warnToConsole, arrForEach, arrIndexOf, createUniqueNamespace, dateNow, dumpObj, eLoggingSeverity, getExceptionName,
+    getIEVersion, getJSON, getNavigator, getWindow, isArray, isBeaconsSupported, isFetchSupported, isNullOrUndefined, isXhrSupported,
+    mergeEvtNamespace, objForEachKey, objKeys, useXDomainRequest
 } from "@microsoft/applicationinsights-core-js";
 import {
     DependencyEnvelopeCreator, EventEnvelopeCreator, ExceptionEnvelopeCreator, MetricEnvelopeCreator, PageViewEnvelopeCreator,
@@ -63,7 +63,8 @@ function _getDefaultAppInsightsChannelConfig(): ISenderConfig {
         samplingPercentage: () => 100,
         customHeaders: () => defaultCustomHeaders,
         convertUndefined: () => defaultValue,
-        eventsLimitInMem: () => 10000
+        eventsLimitInMem: () => 10000,
+        retryCodes: () => null
     }
 }
 
@@ -140,6 +141,7 @@ export class Sender extends BaseTelemetryPlugin implements IChannelControlsAI {
         let _syncUnloadSender: SenderFunction;  // The identified sender to use for the synchronous unload stage
         let _offlineListener: IOfflineListener;
         let _evtNamespace: string | string[];
+        let _retryCodes: number[];
 
         dynamicProto(Sender, this, (_self, _base) => {
 
@@ -232,6 +234,8 @@ export class Sender extends BaseTelemetryPlugin implements IChannelControlsAI {
                     }
                 });
 
+                _retryCodes = _self._senderConfig.retryCodes();
+
                 if (config.storagePrefix){
                     utlSetStoragePrefix(config.storagePrefix);
                 }
@@ -946,8 +950,14 @@ export class Sender extends BaseTelemetryPlugin implements IChannelControlsAI {
              * @param statusCode
              */
             function _isRetriable(statusCode: number): boolean {
+                // retryCodes = [] means should not retry
+                if (!isNullOrUndefined(_retryCodes)) {
+                    return _retryCodes.length && arrIndexOf(_retryCodes, statusCode) > -1;
+                }
+
                 return statusCode === 401 // Unauthorized
-                    || statusCode === 403 // Forbidden
+                    // Removing as private links can return a 403 which causes excessive retries and session storage usage
+                    //|| statusCode === 403 // Forbidden
                     || statusCode === 408 // Timeout
                     || statusCode === 429 // Too many requests.
                     || statusCode === 500 // Internal server error.