refactoring network layer (#390)

* refactoring network layer
LeanplumRequest (old request) removed
LPRequesting removed
LPRequestFactory, LPRequest, LPRequestSender
LPNetworkConstants created

* fix unit tests

* fixing unit tests

* add missing code in sendEventually

* fix unit test for test_sendAllCounts

* fixing test_start_with_user_id and add reset for responseCallback

* move logic for removing empty keys in createArgsDictionaryForRequest method

* refactor LPRequestFactory change to use class methods
fix unit tests

* replace @"data" param with constant

Author: dejan2k

Example/Leanplum-SDK.xcodeproj/project.pbxproj

@@ -15,7 +15,7 @@
 		07E5C8AD1F052B7800A4B092 /* LPEventDataManagerTest.m in Sources */ = {isa = PBXBuildFile; fileRef = 07E5C86D1F052B7800A4B092 /* LPEventDataManagerTest.m */; };
 		07E5C8AE1F052B7800A4B092 /* ExceptionsTest.m in Sources */ = {isa = PBXBuildFile; fileRef = 07E5C86E1F052B7800A4B092 /* ExceptionsTest.m */; };
 		07E5C8AF1F052B7800A4B092 /* LeanplumReachability+Category.m in Sources */ = {isa = PBXBuildFile; fileRef = 07E5C8721F052B7800A4B092 /* LeanplumReachability+Category.m */; };
-		07E5C8B01F052B7800A4B092 /* LeanplumRequest+Categories.m in Sources */ = {isa = PBXBuildFile; fileRef = 07E5C8741F052B7800A4B092 /* LeanplumRequest+Categories.m */; };
+		07E5C8B01F052B7800A4B092 /* LPRequestSender+Categories.m in Sources */ = {isa = PBXBuildFile; fileRef = 07E5C8741F052B7800A4B092 /* LPRequestSender+Categories.m */; };
 		07E5C8B11F052B7800A4B092 /* LPNetworkEngine+Category.m in Sources */ = {isa = PBXBuildFile; fileRef = 07E5C8771F052B7800A4B092 /* LPNetworkEngine+Category.m */; };
 		07E5C8B21F052B7800A4B092 /* LPNetworkOperation+Category.m in Sources */ = {isa = PBXBuildFile; fileRef = 07E5C8791F052B7800A4B092 /* LPNetworkOperation+Category.m */; };
 		07E5C8B31F052B7800A4B092 /* LPFileManagerTest.m in Sources */ = {isa = PBXBuildFile; fileRef = 07E5C87B1F052B7800A4B092 /* LPFileManagerTest.m */; };
@@ -103,6 +103,8 @@
 		9E53F6DF2474363D0097955F /* LPNotificationsManagerTest.m in Sources */ = {isa = PBXBuildFile; fileRef = 9E53F6DE2474363D0097955F /* LPNotificationsManagerTest.m */; };
 		9E53F6E1247438440097955F /* LPPushNotificationsManagerTest.m in Sources */ = {isa = PBXBuildFile; fileRef = 9E53F6E0247438440097955F /* LPPushNotificationsManagerTest.m */; };
 		9E53F6E32474387B0097955F /* LPPushNotificationsHandlerTest.m in Sources */ = {isa = PBXBuildFile; fileRef = 9E53F6E22474387B0097955F /* LPPushNotificationsHandlerTest.m */; };
+		9EE5FFA524D08E6700153AF8 /* LPRequest+Extension.m in Sources */ = {isa = PBXBuildFile; fileRef = 9EE5FFA424D08E6700153AF8 /* LPRequest+Extension.m */; };
+		9EE5FFA824D0C2B700153AF8 /* LPRequestFactory+Extension.m in Sources */ = {isa = PBXBuildFile; fileRef = 9EE5FFA724D0C2B700153AF8 /* LPRequestFactory+Extension.m */; };
 		9EF00D3A2448DE3E0094CA89 /* LPOpenUrlMessageTemplateTest.m in Sources */ = {isa = PBXBuildFile; fileRef = 9EF00D392448DE3E0094CA89 /* LPOpenUrlMessageTemplateTest.m */; };
 		A824579A2411CB600044B1EB /* LPWebInterstitialMessageSnapshotTest.m in Sources */ = {isa = PBXBuildFile; fileRef = A82457982411CB600044B1EB /* LPWebInterstitialMessageSnapshotTest.m */; };
 		A824579B2411CB600044B1EB /* LPRichInterstitialMessageSnapshotTest.m in Sources */ = {isa = PBXBuildFile; fileRef = A82457992411CB600044B1EB /* LPRichInterstitialMessageSnapshotTest.m */; };
@@ -112,7 +114,6 @@
 		A86C8D04240844C7003F5E4E /* LPCenterPopupMessageSnapshotTest.m in Sources */ = {isa = PBXBuildFile; fileRef = A86C8CFC240844C7003F5E4E /* LPCenterPopupMessageSnapshotTest.m */; };
 		A86C8D06240844C7003F5E4E /* LPInterstitialMessageSnapshotTest.m in Sources */ = {isa = PBXBuildFile; fileRef = A86C8CFD240844C7003F5E4E /* LPInterstitialMessageSnapshotTest.m */; };
 		A86C8D08240844C7003F5E4E /* LPAlertMessageSnapshotTest.m in Sources */ = {isa = PBXBuildFile; fileRef = A86C8CFE240844C7003F5E4E /* LPAlertMessageSnapshotTest.m */; };
-		A8CB8A36227276A400E1001D /* LeanplumRequestTest.m in Sources */ = {isa = PBXBuildFile; fileRef = A8CB8A35227276A400E1001D /* LeanplumRequestTest.m */; };
 		A8EEA1AB20E44B0B00FF9A4D /* start_with_variant_debug_info_response.json in Resources */ = {isa = PBXBuildFile; fileRef = A8EEA1AA20E44B0A00FF9A4D /* start_with_variant_debug_info_response.json */; };
 		A8EEA1AC20E44B0B00FF9A4D /* start_with_variant_debug_info_response.json in Resources */ = {isa = PBXBuildFile; fileRef = A8EEA1AA20E44B0A00FF9A4D /* start_with_variant_debug_info_response.json */; };
 		A8F4479E2449769000F6978A /* LPNetworkOperationTest.m in Sources */ = {isa = PBXBuildFile; fileRef = A8F4479D2449769000F6978A /* LPNetworkOperationTest.m */; };
@@ -143,8 +144,8 @@
 		07E5C8701F052B7800A4B092 /* Leanplum+Extensions.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = "Leanplum+Extensions.h"; sourceTree = "<group>"; };
 		07E5C8711F052B7800A4B092 /* LeanplumReachability+Category.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = "LeanplumReachability+Category.h"; sourceTree = "<group>"; };
 		07E5C8721F052B7800A4B092 /* LeanplumReachability+Category.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = "LeanplumReachability+Category.m"; sourceTree = "<group>"; };
-		07E5C8731F052B7800A4B092 /* LeanplumRequest+Categories.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = "LeanplumRequest+Categories.h"; sourceTree = "<group>"; };
-		07E5C8741F052B7800A4B092 /* LeanplumRequest+Categories.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = "LeanplumRequest+Categories.m"; sourceTree = "<group>"; };
+		07E5C8731F052B7800A4B092 /* LPRequestSender+Categories.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = "LPRequestSender+Categories.h"; sourceTree = "<group>"; };
+		07E5C8741F052B7800A4B092 /* LPRequestSender+Categories.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = "LPRequestSender+Categories.m"; sourceTree = "<group>"; };
 		07E5C8761F052B7800A4B092 /* LPNetworkEngine+Category.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = "LPNetworkEngine+Category.h"; sourceTree = "<group>"; };
 		07E5C8771F052B7800A4B092 /* LPNetworkEngine+Category.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = "LPNetworkEngine+Category.m"; sourceTree = "<group>"; };
 		07E5C8781F052B7800A4B092 /* LPNetworkOperation+Category.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = "LPNetworkOperation+Category.h"; sourceTree = "<group>"; };
@@ -220,6 +221,10 @@
 		9E53F6DE2474363D0097955F /* LPNotificationsManagerTest.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = LPNotificationsManagerTest.m; sourceTree = "<group>"; };
 		9E53F6E0247438440097955F /* LPPushNotificationsManagerTest.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = LPPushNotificationsManagerTest.m; sourceTree = "<group>"; };
 		9E53F6E22474387B0097955F /* LPPushNotificationsHandlerTest.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = LPPushNotificationsHandlerTest.m; sourceTree = "<group>"; };
+		9EE5FFA324D08E6700153AF8 /* LPRequest+Extension.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = "LPRequest+Extension.h"; sourceTree = "<group>"; };
+		9EE5FFA424D08E6700153AF8 /* LPRequest+Extension.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = "LPRequest+Extension.m"; sourceTree = "<group>"; };
+		9EE5FFA624D0C2B600153AF8 /* LPRequestFactory+Extension.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = "LPRequestFactory+Extension.h"; sourceTree = "<group>"; };
+		9EE5FFA724D0C2B700153AF8 /* LPRequestFactory+Extension.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = "LPRequestFactory+Extension.m"; sourceTree = "<group>"; };
 		9EF00D392448DE3E0094CA89 /* LPOpenUrlMessageTemplateTest.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = LPOpenUrlMessageTemplateTest.m; sourceTree = "<group>"; };
 		9EF00D3B2448EEF30094CA89 /* LPOpenUrlMessageTemplate+Extenstion.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = "LPOpenUrlMessageTemplate+Extenstion.h"; sourceTree = "<group>"; };
 		A54ACCFCB36AE8C874708A7F /* libPods-Leanplum-SDK_Example-Leanplum-SDK_Tests.a */ = {isa = PBXFileReference; explicitFileType = archive.ar; includeInIndex = 0; path = "libPods-Leanplum-SDK_Example-Leanplum-SDK_Tests.a"; sourceTree = BUILT_PRODUCTS_DIR; };
@@ -231,7 +236,6 @@
 		A86C8CFC240844C7003F5E4E /* LPCenterPopupMessageSnapshotTest.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = LPCenterPopupMessageSnapshotTest.m; sourceTree = "<group>"; };
 		A86C8CFD240844C7003F5E4E /* LPInterstitialMessageSnapshotTest.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = LPInterstitialMessageSnapshotTest.m; sourceTree = "<group>"; };
 		A86C8CFE240844C7003F5E4E /* LPAlertMessageSnapshotTest.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = LPAlertMessageSnapshotTest.m; sourceTree = "<group>"; };
-		A8CB8A35227276A400E1001D /* LeanplumRequestTest.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = LeanplumRequestTest.m; sourceTree = "<group>"; };
 		A8EEA1AA20E44B0A00FF9A4D /* start_with_variant_debug_info_response.json */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.json; path = start_with_variant_debug_info_response.json; sourceTree = "<group>"; };
 		A8F4479D2449769000F6978A /* LPNetworkOperationTest.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = LPNetworkOperationTest.m; sourceTree = "<group>"; };
 		B449EB2921F27AB2005C93B6 /* TiedPrioritiesDifferentDelay.json */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.json; path = TiedPrioritiesDifferentDelay.json; sourceTree = "<group>"; };
@@ -294,7 +298,6 @@
 				65E53E962148786C00A05040 /* LPCountAggregatorTest.m */,
 				653192A021517D4F00D7DDDC /* LPFeatureFlagManagerTest.m */,
 				07E5C87B1F052B7800A4B092 /* LPFileManagerTest.m */,
-				A8CB8A35227276A400E1001D /* LeanplumRequestTest.m */,
 				07E5C87E1F052B7800A4B092 /* LeanplumTest.m */,
 				07E5C87F1F052B7800A4B092 /* LPJSONTest.m */,
 				07E5C8801F052B7800A4B092 /* MessagesTest.m */,
@@ -315,8 +318,12 @@
 				07E5C8701F052B7800A4B092 /* Leanplum+Extensions.h */,
 				07E5C8711F052B7800A4B092 /* LeanplumReachability+Category.h */,
 				07E5C8721F052B7800A4B092 /* LeanplumReachability+Category.m */,
-				07E5C8731F052B7800A4B092 /* LeanplumRequest+Categories.h */,
-				07E5C8741F052B7800A4B092 /* LeanplumRequest+Categories.m */,
+				9EE5FFA324D08E6700153AF8 /* LPRequest+Extension.h */,
+				9EE5FFA424D08E6700153AF8 /* LPRequest+Extension.m */,
+				9EE5FFA624D0C2B600153AF8 /* LPRequestFactory+Extension.h */,
+				9EE5FFA724D0C2B700153AF8 /* LPRequestFactory+Extension.m */,
+				07E5C8731F052B7800A4B092 /* LPRequestSender+Categories.h */,
+				07E5C8741F052B7800A4B092 /* LPRequestSender+Categories.m */,
 				07E5C8761F052B7800A4B092 /* LPNetworkEngine+Category.h */,
 				07E5C8771F052B7800A4B092 /* LPNetworkEngine+Category.m */,
 				07E5C8781F052B7800A4B092 /* LPNetworkOperation+Category.h */,
@@ -810,12 +817,12 @@
 				A86C8D06240844C7003F5E4E /* LPInterstitialMessageSnapshotTest.m in Sources */,
 				65D4AB49224CA963009BA5F3 /* LPActionContextTest.m in Sources */,
 				07E5C8B31F052B7800A4B092 /* LPFileManagerTest.m in Sources */,
-				A8CB8A36227276A400E1001D /* LeanplumRequestTest.m in Sources */,
 				A86C8D08240844C7003F5E4E /* LPAlertMessageSnapshotTest.m in Sources */,
 				07E5C8B81F052B7800A4B092 /* MessagesTest.m in Sources */,
 				A86C8D00240844C7003F5E4E /* LPPushAskToAskMessageSnapshotTest.m in Sources */,
 				07E5C8BD1F052B7800A4B092 /* LeanplumHelper.m in Sources */,
 				07E5C8B21F052B7800A4B092 /* LPNetworkOperation+Category.m in Sources */,
+				9EE5FFA824D0C2B700153AF8 /* LPRequestFactory+Extension.m in Sources */,
 				65E53E982148786C00A05040 /* LPCountAggregatorTest.m in Sources */,
 				A8F4479E2449769000F6978A /* LPNetworkOperationTest.m in Sources */,
 				A86C8D02240844C7003F5E4E /* LPConfirmMessageSnapshotTest.m in Sources */,
@@ -841,8 +848,9 @@
 				9E53F6E32474387B0097955F /* LPPushNotificationsHandlerTest.m in Sources */,
 				07E5C8AF1F052B7800A4B092 /* LeanplumReachability+Category.m in Sources */,
 				9CB691E11F1601BA002D83D8 /* LPEventCallbackManagerTest.m in Sources */,
+				9EE5FFA524D08E6700153AF8 /* LPRequest+Extension.m in Sources */,
 				07E5C8BE1F052B7800A4B092 /* LPUtilsTest.m in Sources */,
-				07E5C8B01F052B7800A4B092 /* LeanplumRequest+Categories.m in Sources */,
+				07E5C8B01F052B7800A4B092 /* LPRequestSender+Categories.m in Sources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};

Example/Tests/Classes/ExceptionsTest.m

@@ -28,7 +28,7 @@
 #import <OHHTTPStubs/HTTPStubs.h>
 #import <OHHTTPStubs/HTTPStubsPathHelpers.h>
 #import "LeanplumHelper.h"
-#import "LeanplumRequest+Categories.h"
+#import "LPRequestSender+Categories.h"
 #import "LPNetworkEngine+Category.h"
 #import "Leanplum+Extensions.h"
 #import "LeanplumReachability+Category.h"

Example/Tests/Classes/Extensions/LPRequest+Extension.h

@@ -0,0 +1,19 @@
+//
+//  LPRequest+Extension.h
+//  Leanplum-SDK_Tests
+//
+//  Created by Dejan Krstevski on 28.07.20.
+//  Copyright © 2020 Leanplum. All rights reserved.
+//
+
+#import <Leanplum/LPRequest.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface LPRequest (Extension)
++ (void)validate_onResponse:(LPNetworkResponseBlock)response;
++ (void)swizzle_methods;
++ (void)reset;
+@end
+
+NS_ASSUME_NONNULL_END

Example/Tests/Classes/Extensions/LPRequest+Extension.m

@@ -0,0 +1,48 @@
+//
+//  LPRequest+Extension.m
+//  Leanplum-SDK_Tests
+//
+//  Created by Dejan . Krstevski on 28.07.20.
+//  Copyright © 2020 Leanplum. All rights reserved.
+//
+
+#import "LPRequest+Extension.h"
+
+@implementation LPRequest (Extension)
+static LPNetworkResponseBlock responseCallback;
+
++ (void)swizzle_methods
+{
+    NSError *error;
+    bool success = [LPSwizzle swizzleMethod:@selector(onResponse:)
+    withMethod:@selector(swizzle_onResponse:)
+         error:&error
+         class:[LPRequest class]];
+    
+    if (!success || error) {
+           NSLog(@"Failed swizzling methods for LPRequest: %@", error);
+       }
+}
+
+- (void)swizzle_onResponse:(LPNetworkResponseBlock) response_
+{
+    [self swizzle_onResponse:^(id<LPNetworkOperationProtocol> operation, id json) {
+        if (responseCallback) {
+            responseCallback(operation, json);
+            responseCallback = nil;
+        }
+        response_(operation, json);
+    }];
+}
+
++ (void)validate_onResponse:(LPNetworkResponseBlock)callback
+{
+    responseCallback = callback;
+}
+
++ (void)reset
+{
+    responseCallback = nil;
+}
+
+@end

Example/Tests/Classes/Extensions/LPRequestFactory+Extension.h

@@ -0,0 +1,17 @@
+//
+//  LPRequestFactory+Extension.h
+//  Leanplum-SDK_Tests
+//
+//  Created by Dejan . Krstevski on 28.07.20.
+//  Copyright © 2020 Leanplum. All rights reserved.
+//
+
+#import <Leanplum/LPRequestFactory.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface LPRequestFactory (Extension)
++ (void)swizzle_methods;
+@end
+
+NS_ASSUME_NONNULL_END

Example/Tests/Classes/Extensions/LPRequestFactory+Extension.m

@@ -0,0 +1,54 @@
+//
+//  LPRequestFactory+Extension.m
+//  Leanplum-SDK_Tests
+//
+//  Created by Dejan . Krstevski on 28.07.20.
+//  Copyright © 2020 Leanplum. All rights reserved.
+//
+
+#import "LPRequestFactory+Extension.h"
+#import "LPRequestSender+Categories.h"
+
+@implementation LPRequestFactory (Extension)
+
++ (void)swizzle_methods
+{
+    NSError *error;
+    bool success = [LPSwizzle swizzleClassMethod:@selector(createGetForApiMethod:params:)
+                    withClassMethod:@selector(swizzle_createGetForApiMethod:params:)
+                                       error:&error
+                                       class:[LPRequestFactory class]];
+    success &= [LPSwizzle swizzleClassMethod:@selector(createPostForApiMethod:params:)
+                             withClassMethod:@selector(swizzle_createPostForApiMethod:params:)
+                                       error:&error
+                                       class:[LPRequestFactory class]];
+    if (!success || error) {
+        NSLog(@"Failed swizzling methods for LPRequestFactory: %@", error);
+    }
+}
+
++ (LPRequest *)swizzle_createGetForApiMethod:(NSString *) apiMethod_ params:(NSDictionary *) params_
+{
+    if ([LPRequestSender sharedInstance].requestCallback != nil)
+    {
+        BOOL success = [LPRequestSender sharedInstance].requestCallback(@"get", apiMethod_, params_);
+        if (success) {
+            [LPRequestSender sharedInstance].requestCallback = nil;
+        }
+    }
+    return [self swizzle_createGetForApiMethod:apiMethod_ params:params_];
+}
+
++ (LPRequest *)swizzle_createPostForApiMethod:(NSString *) apiMethod_ params:(NSDictionary *) params_
+{
+    if ([LPRequestSender sharedInstance].requestCallback != nil)
+    {
+        BOOL success = [LPRequestSender sharedInstance].requestCallback(@"post", apiMethod_, params_);
+        if (success) {
+            [LPRequestSender sharedInstance].requestCallback = nil;
+        }
+    }
+    return [self swizzle_createPostForApiMethod:apiMethod_ params:params_];
+}
+
+@end

Example/Tests/Classes/Extensions/LeanplumRequest+Categories.h renamed to Example/Tests/Classes/Extensions/LPRequestSender+Categories.h

@@ -1,5 +1,5 @@
 //
-//  LeanplumRequest+Extensions.h
+//  LPRequestSender+Extensions.h
 //  Leanplum-SDK
 //
 //  Created by Milos Jakovljevic on 10/17/16.
@@ -23,12 +23,16 @@
 //  under the License.
 
 
-#import "LeanplumRequest.h"
+#import "LPRequestSender.h"
 
-@interface LeanplumRequest(MethodSwizzling)
+@interface LPRequestSender(MethodSwizzling)
+
+@property (assign) BOOL (^requestCallback)(NSString *method, NSString *apiMethod, NSDictionary *params);
+
+- (void)setRequestCallback:(BOOL (^)(NSString *, NSString *, NSDictionary *))requestCallback;
+- (BOOL (^)(NSString *, NSString *, NSDictionary *))requestCallback;
 
 + (void)validate_request:(BOOL (^)(NSString *, NSString *, NSDictionary *))callback;
-+ (void)validate_onResponse:(LPNetworkResponseBlock)response;
 + (void)swizzle_methods;
 + (void)reset;
 

Example/Tests/Classes/Extensions/LPRequestSender+Categories.m

@@ -0,0 +1,83 @@
+//
+//  LPRequestSender+Extensions.m
+//  Leanplum-SDK
+//
+//  Created by Milos Jakovljevic on 10/17/16.
+//  Copyright © 2016 Leanplum. All rights reserved.
+//
+//  Licensed to the Apache Software Foundation (ASF) under one
+//  or more contributor license agreements.  See the NOTICE file
+//  distributed with this work for additional information
+//  regarding copyright ownership.  The ASF licenses this file
+//  to you under the Apache License, Version 2.0 (the "License");
+//  you may not use this file except in compliance with the License.
+//  You may obtain a copy of the License at
+//
+//  http://www.apache.org/licenses/LICENSE-2.0
+//
+//  Unless required by applicable law or agreed to in writing,
+//  software distributed under the License is distributed on an
+//  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+//  KIND, either express or implied.  See the License for the
+//  specific language governing permissions and limitations
+//  under the License.
+
+
+#import "LPRequestSender+Categories.h"
+#import "LPSwizzle.h"
+#import <objc/runtime.h>
+
+@implementation LPRequestSender(MethodSwizzling)
+@dynamic requestCallback;
+
+- (void)setRequestCallback:(BOOL (^)(NSString *, NSString *, NSDictionary *))requestCallback
+{
+    objc_setAssociatedObject(self, @selector(requestCallback), requestCallback, OBJC_ASSOCIATION_COPY);
+}
+
+- (BOOL (^)(NSString *, NSString *, NSDictionary *))requestCallback
+{
+    return objc_getAssociatedObject(self, _cmd);
+}
+
++ (void)swizzle_methods
+{
+    NSError *error;
+    bool success = [LPSwizzle swizzleMethod:@selector(sendNow:)
+                                 withMethod:@selector(swizzle_sendNow:)
+                                      error:&error
+                                      class:[LPRequestSender class]];
+    success &= [LPSwizzle swizzleMethod:@selector(sendEventually:sync:)
+                             withMethod:@selector(swizzle_sendEventually:sync:)
+                                  error:&error
+                                  class:[LPRequestSender class]];
+    if (!success || error) {
+        NSLog(@"Failed swizzling methods for LPRequestSender: %@", error);
+    }
+}
+
+- (void)swizzle_sendNow:(LPRequest *)request
+{
+    [self swizzle_sendNow:request];
+}
+
+- (void)swizzle_sendEventually:(LPRequest *)request sync:(BOOL)sync
+{
+    [self swizzle_sendEventually:request sync:sync];
+}
+
+- (void)swizzle_download
+{
+
+}
+
++ (void)validate_request:(BOOL (^)(NSString *, NSString *, NSDictionary *)) callback
+{
+    [LPRequestSender sharedInstance].requestCallback = callback;
+}
+
++ (void)reset {
+    [LPRequestSender sharedInstance].requestCallback = nil;
+}
+
+@end