feat: direct routing by default

IntegrationTests/Sources/main.swift

@@ -3,7 +3,6 @@
 import Foundation
 import mParticle_Apple_SDK_NoLocation
 
-@discardableResult
 func wait(timeout: UInt32 = 5) {
     mparticle.upload()
     sleep(timeout)

MIGRATING.md

@@ -93,6 +93,42 @@ This change only affects users who:
 
 The `MPListenerController` class has been removed. The SDK no longer invokes any listener callbacks.
 
+### Direct Routing Enabled by Default
+
+API requests now route directly to regional endpoints based on your API key prefix:
+
+**Before:**
+
+- `nativesdks.mparticle.com`
+- `tracking-nativesdks.mparticle.com`
+- `identity.mparticle.com`
+- `tracking-identity.mparticle.com`
+- `config2.mparticle.com`
+
+**After:**
+
+- `nativesdks.[pod].mparticle.com`
+- `tracking-nativesdks.[pod].mparticle.com`
+- `identity.[pod].mparticle.com`
+- `tracking-identity.[pod].mparticle.com`
+- `config2.mparticle.com`
+
+> [!NOTE]
+> The `config2.mparticle.com` subdomain is used to fetch SDK configuration and will not change.
+
+Examples:
+
+| API Key Format              | Events Endpoint                | Events Tracking Endpoint                | Identity Endpoint            | Identity Tracking Endpoint            |
+| --------------------------- | ------------------------------ | --------------------------------------- | ---------------------------- | ------------------------------------- |
+| `xxxxx` (legacy, no prefix) | `nativesdks.us1.mparticle.com` | `tracking-nativesdks.us1.mparticle.com` | `identity.us1.mparticle.com` | `tracking-identity.us1.mparticle.com` |
+| `us1-xxxxx`                 | `nativesdks.us1.mparticle.com` | `tracking-nativesdks.us1.mparticle.com` | `identity.us1.mparticle.com` | `tracking-identity.us1.mparticle.com` |
+| `us2-xxxxx`                 | `nativesdks.us2.mparticle.com` | `tracking-nativesdks.us2.mparticle.com` | `identity.us2.mparticle.com` | `tracking-identity.us2.mparticle.com` |
+| `eu1-xxxxx`                 | `nativesdks.eu1.mparticle.com` | `tracking-nativesdks.eu1.mparticle.com` | `identity.eu1.mparticle.com` | `tracking-identity.eu1.mparticle.com` |
+| `au1-xxxxx`                 | `nativesdks.au1.mparticle.com` | `tracking-nativesdks.au1.mparticle.com` | `identity.au1.mparticle.com` | `tracking-identity.au1.mparticle.com` |
+
+> [!NOTE]
+> If your app has strict App Transport Security (ATS) settings, you may need to add `NSIncludesSubdomains` set to `YES` for the `mparticle.com` domain in your Info.plist to allow connections to regional subdomains.
+
 ### Removed Deprecated UIApplicationDelegate Methods
 
 Apple has deprecated several `UIApplicationDelegate` protocol methods in favor of the modern `UIScene` lifecycle introduced in iOS 13. The mParticle SDK previously provided wrapper methods for these deprecated delegate methods, but these have been removed as they are scheduled for removal by Apple in iOS 27.

UnitTests/ObjCTests/MPNetworkCommunication+Tests.h

@@ -7,7 +7,7 @@ extern NSString * _Nonnull const kMPURLHostIdentitySubdomain;
 
 @interface MPNetworkCommunication_PRIVATE(Tests)
 
-- (nonnull NSString *)defaultHostWithSubdomain:(nonnull NSString *)subdomain apiKey:(nonnull NSString *)apiKey enableDirectRouting:(BOOL)enableDirectRouting;
+- (nonnull NSString *)defaultHostWithSubdomain:(nonnull NSString *)subdomain apiKey:(nonnull NSString *)apiKey;
 - (nonnull NSString *)defaultEventHost;
 - (nonnull NSString *)defaultIdentityHost;
 

UnitTests/ObjCTests/MPNetworkCommunicationTests.m

@@ -130,7 +130,7 @@ - (void)testModifyURL {
 
     [self deswizzle];
 
-    XCTAssert([modifyURL.absoluteString rangeOfString:@"https://identity.mparticle.com/v1/0/modify"].location != NSNotFound);
+    XCTAssert([modifyURL.absoluteString rangeOfString:@"https://identity.us1.mparticle.com/v1/0/modify"].location != NSNotFound);
     XCTAssert([modifyURL.accessibilityHint isEqualToString:@"identity"]);
 }
 
@@ -200,7 +200,7 @@ - (void)testAliasURL {
 
     [self deswizzle];
 
-    XCTAssert([aliasURL.absoluteString rangeOfString:@"https://nativesdks.mparticle.com/v1/identity/"].location != NSNotFound);
+    XCTAssert([aliasURL.absoluteString rangeOfString:@"https://nativesdks.us1.mparticle.com/v1/identity/"].location != NSNotFound);
     XCTAssert([aliasURL.accessibilityHint isEqualToString:@"identity"]);
 }
 
@@ -252,7 +252,7 @@ - (void)testAliasURLWithEventsOnly {
 
     [self deswizzle];
 
-    XCTAssert([aliasURL.absoluteString rangeOfString:@"https://nativesdks.mparticle.com/v1/identity/"].location != NSNotFound);
+    XCTAssert([aliasURL.absoluteString rangeOfString:@"https://nativesdks.us1.mparticle.com/v1/identity/"].location != NSNotFound);
     XCTAssert([aliasURL.accessibilityHint isEqualToString:@"identity"]);
 }
 
@@ -938,31 +938,7 @@ - (void)testPodURLRoutingAndTrackingURL {
     ];
     MPNetworkCommunication_PRIVATE *networkCommunication = [[MPNetworkCommunication_PRIVATE alloc] init];
     MPStateMachine_PRIVATE *stateMachine = [MParticle sharedInstance].stateMachine;
-    NSString *oldEventHost = @"nativesdks.mparticle.com";
-    NSString *oldIdentityHost = @"identity.mparticle.com";
 
-    stateMachine.enableDirectRouting = NO;
-    stateMachine.attAuthorizationStatus = @(MPATTAuthorizationStatusNotDetermined);
-    for (NSArray *test in testKeys) {
-        NSString *key = test[0];
-        stateMachine.apiKey = key;
-
-        XCTAssertEqualObjects(oldEventHost, [networkCommunication defaultEventHost]);
-        XCTAssertEqualObjects(oldIdentityHost, [networkCommunication defaultIdentityHost]);
-    }
-
-    NSString *newEventHost = @"tracking-nativesdks.mparticle.com";
-    NSString *newIdentityHost = @"tracking-identity.mparticle.com";
-    stateMachine.attAuthorizationStatus = @(MPATTAuthorizationStatusAuthorized);
-    for (NSArray *test in testKeys) {
-        NSString *key = test[0];
-        stateMachine.apiKey = key;
-
-        XCTAssertEqualObjects(newEventHost, [networkCommunication defaultEventHost]);
-        XCTAssertEqualObjects(newIdentityHost, [networkCommunication defaultIdentityHost]);
-    }
-
-    stateMachine.enableDirectRouting = YES;
     stateMachine.attAuthorizationStatus = @(MPATTAuthorizationStatusNotDetermined);
     for (NSArray *test in testKeys) {
         NSString *key = test[0];

UnitTests/ObjCTests/MPResponseConfigTests.m

@@ -183,5 +183,23 @@ - (void)testDeleteDueToMaxConfigAge {
     [self waitForExpectationsWithTimeout:DEFAULT_TIMEOUT handler:nil];
 }
 
+- (void)testIgnoresLegacyDirectRoutingConfig {
+    NSDictionary *configuration = @{
+        kMPRemoteConfigKitsKey: [NSNull null],
+        kMPRemoteConfigCustomModuleSettingsKey: [NSNull null],
+        kMPRemoteConfigRampKey: @100,
+        kMPRemoteConfigTriggerKey: [NSNull null],
+        kMPRemoteConfigExceptionHandlingModeKey: kMPRemoteConfigExceptionHandlingModeIgnore,
+        kMPRemoteConfigSessionTimeoutKey: @112,
+        @"dur": @NO
+    };
+
+    MPResponseConfig *responseConfig = [[MPResponseConfig alloc] initWithConfiguration:configuration 
+                                                                          stateMachine:[MParticle sharedInstance].stateMachine 
+                                                                     backendController:[MParticle sharedInstance].backendController];
+
+    XCTAssertNotNil(responseConfig, @"Config should parse successfully even with legacy dur key");
+}
+
 
 @end

UnitTests/ObjCTests/MPURLRequestBuilderTests.m

@@ -448,7 +448,7 @@ - (void)testSignatureRelativePath {
     MPURLRequestBuilder *builder = [MPURLRequestBuilder newBuilderWithURL:baseURL];
 
     NSString *result = builder.url.defaultURL.absoluteString;
-    XCTAssertEqualObjects(result, @"https://identity.mparticle.com/v1/12/modify");
+    XCTAssertEqualObjects(result, @"https://identity.us1.mparticle.com/v1/12/modify");
     result = builder.url.url.absoluteString;
     XCTAssertEqualObjects(result, @"https://identity.mp.example.com/v1/12/modify");
 
@@ -458,7 +458,7 @@ - (void)testSignatureRelativePath {
     builder = [MPURLRequestBuilder newBuilderWithURL:baseURL];
 
     result = builder.url.defaultURL.absoluteString;
-    XCTAssertEqualObjects(result, @"https://identity.mparticle.com/v1/12/modify");
+    XCTAssertEqualObjects(result, @"https://identity.us1.mparticle.com/v1/12/modify");
     result = builder.url.url.absoluteString;
     XCTAssertTrue([result isEqualToString:@"https://https://example.com/12/modify"] || [result isEqualToString:@"https://https//example.com/12/modify"]);
 
@@ -467,18 +467,18 @@ - (void)testSignatureRelativePath {
     builder = [MPURLRequestBuilder newBuilderWithURL:baseURL];
 
     result = builder.url.defaultURL.absoluteString;
-    XCTAssertEqualObjects(result, @"https://identity.mparticle.com/v1/12/modify");
+    XCTAssertEqualObjects(result, @"https://identity.us1.mparticle.com/v1/12/modify");
     result = builder.url.url.absoluteString;
-    XCTAssertEqualObjects(result, @"https://identity.mparticle.com/12/modify");
+    XCTAssertEqualObjects(result, @"https://identity.us1.mparticle.com/12/modify");
 
     networkOptions = nil;
     baseURL = [networkCommunication modifyURL];
     builder = [MPURLRequestBuilder newBuilderWithURL:baseURL];
 
     result = builder.url.defaultURL.absoluteString;
-    XCTAssertEqualObjects(result, @"https://identity.mparticle.com/v1/12/modify");
+    XCTAssertEqualObjects(result, @"https://identity.us1.mparticle.com/v1/12/modify");
     result = builder.url.url.absoluteString;
-    XCTAssertEqualObjects(result, @"https://identity.mparticle.com/12/modify");
+    XCTAssertEqualObjects(result, @"https://identity.us1.mparticle.com/12/modify");
 }
 
 @end

mParticle-Apple-SDK/Include/MPStateMachine.h

@@ -51,7 +51,6 @@
 @property (nonatomic) BOOL automaticSessionTracking;
 @property (nonatomic) BOOL allowASR;
 @property (nonatomic, nullable) MPDataPlanOptions *dataPlanOptions;
-@property (nonatomic) BOOL enableDirectRouting;
 @property (nonatomic) BOOL enableAudienceAPI;
 @property (nonatomic) BOOL enableIdentityCaching;
 

mParticle-Apple-SDK/MPConstants.swift

@@ -117,7 +117,6 @@ enum RemoteConfig {
     static let kMPRemoteConfigAliasMaxWindow = "alias_max_window"
     static let kMPRemoteConfigAllowASR = "iasr"
     static let kMPRemoteConfigExcludeAnonymousUsersKey = "eau"
-    static let kMPRemoteConfigDirectURLRouting = "dur"
     static let kMPRemoteConfigFlagsKey = "flags"
     static let kMPRemoteConfigAudienceAPIKey = "AudienceAPI"
     static let kMPRemoteConfigDataPlanningResults = "dpr"

mParticle-Apple-SDK/MPIConstants.h

@@ -295,7 +295,6 @@ extern NSString * _Nonnull const kMPRemoteConfigRestrictIDFA;
 extern NSString * _Nonnull const kMPRemoteConfigAliasMaxWindow;
 extern NSString * _Nonnull const kMPRemoteConfigAllowASR;
 extern NSString * _Nonnull const kMPRemoteConfigExcludeAnonymousUsersKey;
-extern NSString * _Nonnull const kMPRemoteConfigDirectURLRouting;
 
 extern NSString * _Nonnull const kMPRemoteConfigBlockUnplannedEvents;
 extern NSString * _Nonnull const kMPRemoteConfigBlockUnplannedEventAttributes;

mParticle-Apple-SDK/MPIConstants.m

@@ -228,7 +228,6 @@
 NSString *const kMPRemoteConfigAliasMaxWindow = @"alias_max_window";
 NSString *const kMPRemoteConfigAllowASR = @"iasr";
 NSString *const kMPRemoteConfigExcludeAnonymousUsersKey = @"eau";
-NSString *const kMPRemoteConfigDirectURLRouting = @"dur";
 NSString *const kMPRemoteConfigDataPlanningResults = @"dpr";
 NSString *const kMPRemoteConfigDataPlanning = @"dtpn";
 NSString *const kMPRemoteConfigDataPlanningBlock = @"blok";

mParticle-Apple-SDK/Network/MPNetworkCommunication.m

@@ -119,35 +119,30 @@ - (instancetype)init {
 
 #pragma mark Private accessors
 
-- (NSString *)defaultHostWithSubdomain:(NSString *)subdomain apiKey:(NSString *)apiKey enableDirectRouting:(BOOL)enableDirectRouting {
-    if (enableDirectRouting) {
-        NSArray *splitKey = [apiKey componentsSeparatedByString:@"-"];
-        if (splitKey.count <= 1) {
-            // Handle case with no prefix, default to US1 (old keys)
-            return [NSString stringWithFormat:@"%@.us1.mparticle.com", subdomain];
-        }
-        return [NSString stringWithFormat:@"%@.%@.mparticle.com", subdomain, splitKey[0]];
+- (NSString *)defaultHostWithSubdomain:(NSString *)subdomain apiKey:(NSString *)apiKey {
+    NSArray *splitKey = [apiKey componentsSeparatedByString:@"-"];
+    if (splitKey.count <= 1) {
+        // Handle case with no prefix, default to US1 (old keys)
+        return [NSString stringWithFormat:@"%@.us1.mparticle.com", subdomain];
     }
-
-    // Handle feature flag disabled (old behavior)
-    return [NSString stringWithFormat:@"%@.mparticle.com", subdomain];
+    return [NSString stringWithFormat:@"%@.%@.mparticle.com", subdomain, splitKey[0]];
 }
 
 - (NSString *)defaultEventHost {
     MPStateMachine_PRIVATE *stateMachine = [MParticle sharedInstance].stateMachine;
     if (stateMachine.attAuthorizationStatus.integerValue == MPATTAuthorizationStatusAuthorized) {
-        return [self defaultHostWithSubdomain:kMPURLHostEventTrackingSubdomain apiKey:stateMachine.apiKey enableDirectRouting:stateMachine.enableDirectRouting];
+        return [self defaultHostWithSubdomain:kMPURLHostEventTrackingSubdomain apiKey:stateMachine.apiKey];
     } else {
-        return [self defaultHostWithSubdomain:kMPURLHostEventSubdomain apiKey:stateMachine.apiKey enableDirectRouting:stateMachine.enableDirectRouting];
+        return [self defaultHostWithSubdomain:kMPURLHostEventSubdomain apiKey:stateMachine.apiKey];
     }
 }
 
 - (NSString *)defaultIdentityHost {
     MPStateMachine_PRIVATE *stateMachine = [MParticle sharedInstance].stateMachine;
     if (stateMachine.attAuthorizationStatus.integerValue == MPATTAuthorizationStatusAuthorized) {
-        return [self defaultHostWithSubdomain:kMPURLHostIdentityTrackingSubdomain apiKey:stateMachine.apiKey enableDirectRouting:stateMachine.enableDirectRouting];
+        return [self defaultHostWithSubdomain:kMPURLHostIdentityTrackingSubdomain apiKey:stateMachine.apiKey];
     } else {
-        return [self defaultHostWithSubdomain:kMPURLHostIdentitySubdomain apiKey:stateMachine.apiKey enableDirectRouting:stateMachine.enableDirectRouting];
+        return [self defaultHostWithSubdomain:kMPURLHostIdentitySubdomain apiKey:stateMachine.apiKey];
     }
 }
 

mParticle-Apple-SDK/Utils/MPResponseConfig.swift

@@ -90,7 +90,6 @@ internal import mParticle_Apple_SDK_Swift
             stateMachine.configureDataBlocking(config[RemoteConfig.kMPRemoteConfigDataPlanningResults] as? [AnyHashable: Any])
 
             stateMachine.allowASR = config[RemoteConfig.kMPRemoteConfigAllowASR] as? Bool ?? false
-            stateMachine.enableDirectRouting = config[RemoteConfig.kMPRemoteConfigDirectURLRouting] as? Bool ?? false
             if let remoteConfigFlags = config[RemoteConfig.kMPRemoteConfigFlagsKey] as? [AnyHashable: Any] {
                 if let audienceAPIFlag = remoteConfigFlags[RemoteConfig.kMPRemoteConfigAudienceAPIKey] as? String {
                     stateMachine.enableAudienceAPI = audienceAPIFlag == "True"