├── .idea
    ├── RNCachingURLProtocol.iml
    ├── encodings.xml
    ├── misc.xml
    ├── modules.xml
    ├── scopes
    │   └── scope_settings.xml
    ├── vcs.xml
    └── xcode.xml
├── CachedWebView.xcodeproj
    ├── .gitignore
    ├── project.pbxproj
    └── project.xcworkspace
    │   ├── .gitignore
    │   └── contents.xcworkspacedata
├── CachedWebView
    ├── AppDelegate.h
    ├── AppDelegate.m
    ├── CachedWebView-Info.plist
    ├── CachedWebView-Prefix.pch
    ├── ViewController.h
    ├── ViewController.m
    ├── en.lproj
    │   ├── InfoPlist.strings
    │   └── ViewController.xib
    └── main.m
├── NSString+Sha1.h
├── NSString+Sha1.m
├── README.md
├── RNCachingURLProtocol.h
├── RNCachingURLProtocol.m
├── Reachability.h
└── Reachability.m


/.idea/RNCachingURLProtocol.iml:
--------------------------------------------------------------------------------
 1 | <?xml version="1.0" encoding="UTF-8"?>
 2 | <module type="CIDR_MODULE" version="4">
 3 |   <component name="NewModuleRootManager">
 4 |     <content url="file://$USER_HOME$/Library/Caches/appCode10/DerivedData/CachedWebView-133e0bbf/Build/Products/Debug-iphonesimulator/CachedWebView.app">
 5 |       <sourceFolder url="file://$USER_HOME$/Library/Caches/appCode10/DerivedData/CachedWebView-133e0bbf/Build/Products/Debug-iphonesimulator/CachedWebView.app" isTestSource="false" />
 6 |     </content>
 7 |     <content url="file://$MODULE_DIR$">
 8 |       <sourceFolder url="file://$MODULE_DIR$" isTestSource="false" />
 9 |     </content>
10 |     <orderEntry type="inheritedJdk" />
11 |     <orderEntry type="sourceFolder" forTests="false" />
12 |   </component>
13 | </module>
14 | 
15 | 


--------------------------------------------------------------------------------
/.idea/encodings.xml:
--------------------------------------------------------------------------------
1 | <?xml version="1.0" encoding="UTF-8"?>
2 | <project version="4">
3 |   <component name="Encoding" useUTFGuessing="true" native2AsciiForPropertiesFiles="false" />
4 | </project>
5 | 
6 | 


--------------------------------------------------------------------------------
/.idea/misc.xml:
--------------------------------------------------------------------------------
 1 | <?xml version="1.0" encoding="UTF-8"?>
 2 | <project version="4">
 3 |   <component name="ProjectInspectionProfilesVisibleTreeState">
 4 |     <entry key="Project Default">
 5 |       <profile-state>
 6 |         <expanded-state>
 7 |           <State>
 8 |             <id />
 9 |           </State>
10 |         </expanded-state>
11 |         <selected-state>
12 |           <State>
13 |             <id>Classes</id>
14 |           </State>
15 |         </selected-state>
16 |       </profile-state>
17 |     </entry>
18 |   </component>
19 |   <component name="ProjectResources">
20 |     <default-html-doctype>http://www.w3.org/1999/xhtml</default-html-doctype>
21 |   </component>
22 |   <component name="ProjectRootManager" version="2" />
23 | </project>
24 | 
25 | 


--------------------------------------------------------------------------------
/.idea/modules.xml:
--------------------------------------------------------------------------------
 1 | <?xml version="1.0" encoding="UTF-8"?>
 2 | <project version="4">
 3 |   <component name="ProjectModuleManager">
 4 |     <modules>
 5 |       <module fileurl="file://$PROJECT_DIR$/.idea/RNCachingURLProtocol.iml" filepath="$PROJECT_DIR$/.idea/RNCachingURLProtocol.iml" />
 6 |     </modules>
 7 |   </component>
 8 | </project>
 9 | 
10 | 


--------------------------------------------------------------------------------
/.idea/scopes/scope_settings.xml:
--------------------------------------------------------------------------------
1 | <component name="DependencyValidationManager">
2 |   <state>
3 |     <option name="SKIP_IMPORT_STATEMENTS" value="false" />
4 |   </state>
5 | </component>


--------------------------------------------------------------------------------
/.idea/vcs.xml:
--------------------------------------------------------------------------------
1 | <?xml version="1.0" encoding="UTF-8"?>
2 | <project version="4">
3 |   <component name="VcsDirectoryMappings">
4 |     <mapping directory="" vcs="Git" />
5 |     <mapping directory="$PROJECT_DIR$" vcs="Git" />
6 |   </component>
7 | </project>
8 | 
9 | 


--------------------------------------------------------------------------------
/.idea/xcode.xml:
--------------------------------------------------------------------------------
1 | <?xml version="1.0" encoding="UTF-8"?>
2 | <project version="4">
3 |   <component name="XcodeMetaData" PROJECT_FILE="$PROJECT_DIR$/CachedWebView.xcodeproj" />
4 | </project>
5 | 
6 | 


--------------------------------------------------------------------------------
/CachedWebView.xcodeproj/.gitignore:
--------------------------------------------------------------------------------
1 | xcuserdata
2 | 


--------------------------------------------------------------------------------
/CachedWebView.xcodeproj/project.pbxproj:
--------------------------------------------------------------------------------
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 56 | 				FB237ED014D5B86100F30AD8 /* Foundation.framework in Frameworks */,
 57 | 				FB237ED214D5B86100F30AD8 /* CoreGraphics.framework in Frameworks */,
 58 | 			);
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 74 | 				FB237ED314D5B86100F30AD8 /* CachedWebView */,
 75 | 				FB237ECC14D5B86100F30AD8 /* Frameworks */,
 76 | 				FB237ECA14D5B86100F30AD8 /* Products */,
 77 | 			);
 78 | 			sourceTree = "<group>";
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 80 | 		FB237ECA14D5B86100F30AD8 /* Products */ = {
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 83 | 				FB237EC914D5B86100F30AD8 /* CachedWebView.app */,
 84 | 			);
 85 | 			name = Products;
 86 | 			sourceTree = "<group>";
 87 | 		};
 88 | 		FB237ECC14D5B86100F30AD8 /* Frameworks */ = {
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 93 | 				FB237ECF14D5B86100F30AD8 /* Foundation.framework */,
 94 | 				FB237ED114D5B86100F30AD8 /* CoreGraphics.framework */,
 95 | 			);
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105 | 				FB237EE014D5B86100F30AD8 /* ViewController.m */,
106 | 				FB237EE214D5B86100F30AD8 /* ViewController.xib */,
107 | 				FB237ED414D5B86100F30AD8 /* Supporting Files */,
108 | 			);
109 | 			path = CachedWebView;
110 | 			sourceTree = "<group>";
111 | 		};
112 | 		FB237ED414D5B86100F30AD8 /* Supporting Files */ = {
113 | 			isa = PBXGroup;
114 | 			children = (
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116 | 				FB237ED614D5B86100F30AD8 /* InfoPlist.strings */,
117 | 				FB237ED914D5B86100F30AD8 /* main.m */,
118 | 				FB237EDB14D5B86100F30AD8 /* CachedWebView-Prefix.pch */,
119 | 			);
120 | 			name = "Supporting Files";
121 | 			sourceTree = "<group>";
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125 | /* Begin PBXNativeTarget section */
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131 | 				FB237EC614D5B86100F30AD8 /* Frameworks */,
132 | 				FB237EC714D5B86100F30AD8 /* Resources */,
133 | 			);
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135 | 			);
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137 | 			);
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140 | 			productReference = FB237EC914D5B86100F30AD8 /* CachedWebView.app */;
141 | 			productType = "com.apple.product-type.application";
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147 | 			isa = PBXProject;
148 | 			attributes = {
149 | 				LastUpgradeCheck = 0830;
150 | 			};
151 | 			buildConfigurationList = FB237EC314D5B86100F30AD8 /* Build configuration list for PBXProject "CachedWebView" */;
152 | 			compatibilityVersion = "Xcode 3.2";
153 | 			developmentRegion = English;
154 | 			hasScannedForEncodings = 0;
155 | 			knownRegions = (
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162 | 			targets = (
163 | 				FB237EC814D5B86100F30AD8 /* CachedWebView */,
164 | 			);
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175 | 				FB39D08214D5BB1F002A6D1B /* README.md in Resources */,
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188 | 				FB237EDA14D5B86100F30AD8 /* main.m in Sources */,
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190 | 				FB237EE114D5B86100F30AD8 /* ViewController.m in Sources */,
191 | 				C800AAE8166E77B20027E1E5 /* NSString+Sha1.m in Sources */,
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209 | 				FB237EE314D5B86100F30AD8 /* en */,
210 | 			);
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219 | 			buildSettings = {
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224 | 				CLANG_WARN_EMPTY_BODY = YES;
225 | 				CLANG_WARN_ENUM_CONVERSION = YES;
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273 | 				COPY_PHASE_STRIP = YES;
274 | 				ENABLE_STRICT_OBJC_MSGSEND = YES;
275 | 				GCC_C_LANGUAGE_STANDARD = gnu99;
276 | 				GCC_NO_COMMON_BLOCKS = YES;
277 | 				GCC_VERSION = com.apple.compilers.llvm.clang.1_0;
278 | 				GCC_WARN_64_TO_32_BIT_CONVERSION = YES;
279 | 				GCC_WARN_ABOUT_RETURN_TYPE = YES;
280 | 				GCC_WARN_UNDECLARED_SELECTOR = YES;
281 | 				GCC_WARN_UNINITIALIZED_AUTOS = YES;
282 | 				GCC_WARN_UNUSED_FUNCTION = YES;
283 | 				GCC_WARN_UNUSED_VARIABLE = YES;
284 | 				IPHONEOS_DEPLOYMENT_TARGET = 8.0;
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294 | 			buildSettings = {
295 | 				GCC_PRECOMPILE_PREFIX_HEADER = YES;
296 | 				GCC_PREFIX_HEADER = "CachedWebView/CachedWebView-Prefix.pch";
297 | 				INFOPLIST_FILE = "CachedWebView/CachedWebView-Info.plist";
298 | 				PRODUCT_BUNDLE_IDENTIFIER = "net.robnapier.${PRODUCT_NAME:rfc1034identifier}";
299 | 				PRODUCT_NAME = "$(TARGET_NAME)";
300 | 				WRAPPER_EXTENSION = app;
301 | 			};
302 | 			name = Debug;
303 | 		};
304 | 		FB237EE914D5B86100F30AD8 /* Release */ = {
305 | 			isa = XCBuildConfiguration;
306 | 			buildSettings = {
307 | 				GCC_PRECOMPILE_PREFIX_HEADER = YES;
308 | 				GCC_PREFIX_HEADER = "CachedWebView/CachedWebView-Prefix.pch";
309 | 				INFOPLIST_FILE = "CachedWebView/CachedWebView-Info.plist";
310 | 				PRODUCT_BUNDLE_IDENTIFIER = "net.robnapier.${PRODUCT_NAME:rfc1034identifier}";
311 | 				PRODUCT_NAME = "$(TARGET_NAME)";
312 | 				WRAPPER_EXTENSION = app;
313 | 			};
314 | 			name = Release;
315 | 		};
316 | /* End XCBuildConfiguration section */
317 | 
318 | /* Begin XCConfigurationList section */
319 | 		FB237EC314D5B86100F30AD8 /* Build configuration list for PBXProject "CachedWebView" */ = {
320 | 			isa = XCConfigurationList;
321 | 			buildConfigurations = (
322 | 				FB237EE514D5B86100F30AD8 /* Debug */,
323 | 				FB237EE614D5B86100F30AD8 /* Release */,
324 | 			);
325 | 			defaultConfigurationIsVisible = 0;
326 | 			defaultConfigurationName = Release;
327 | 		};
328 | 		FB237EE714D5B86100F30AD8 /* Build configuration list for PBXNativeTarget "CachedWebView" */ = {
329 | 			isa = XCConfigurationList;
330 | 			buildConfigurations = (
331 | 				FB237EE814D5B86100F30AD8 /* Debug */,
332 | 				FB237EE914D5B86100F30AD8 /* Release */,
333 | 			);
334 | 			defaultConfigurationIsVisible = 0;
335 | 			defaultConfigurationName = Release;
336 | 		};
337 | /* End XCConfigurationList section */
338 | 	};
339 | 	rootObject = FB237EC014D5B86100F30AD8 /* Project object */;
340 | }
341 | 


--------------------------------------------------------------------------------
/CachedWebView.xcodeproj/project.xcworkspace/.gitignore:
--------------------------------------------------------------------------------
1 | xcuserdata
2 | 


--------------------------------------------------------------------------------
/CachedWebView.xcodeproj/project.xcworkspace/contents.xcworkspacedata:
--------------------------------------------------------------------------------
1 | <?xml version="1.0" encoding="UTF-8"?>
2 | <Workspace
3 |    version = "1.0">
4 |    <FileRef
5 |       location = "self:CachedWebView.xcodeproj">
6 |    </FileRef>
7 | </Workspace>
8 | 


--------------------------------------------------------------------------------
/CachedWebView/AppDelegate.h:
--------------------------------------------------------------------------------
 1 | //
 2 | //  AppDelegate.h
 3 | //  CachedWebView
 4 | //
 5 | //  Created by Robert Napier on 1/29/12.
 6 | //  Copyright (c) 2012 Rob Napier.
 7 | //
 8 | //  This code is licensed under the MIT License:
 9 | //
10 | //  Permission is hereby granted, free of charge, to any person obtaining a
11 | //  copy of this software and associated documentation files (the "Software"),
12 | //  to deal in the Software without restriction, including without limitation
13 | //  the rights to use, copy, modify, merge, publish, distribute, sublicense,
14 | //  and/or sell copies of the Software, and to permit persons to whom the
15 | //  Software is furnished to do so, subject to the following conditions:
16 | //
17 | //  The above copyright notice and this permission notice shall be included in
18 | //  all copies or substantial portions of the Software.
19 | //
20 | //  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
21 | //  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
22 | //  FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE
23 | //  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
24 | //  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
25 | //  FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
26 | //  DEALINGS IN THE SOFTWARE.
27 | //
28 | 
29 | #import <UIKit/UIKit.h>
30 | 
31 | @class ViewController;
32 | 
33 | @interface AppDelegate : UIResponder <UIApplicationDelegate>
34 | 
35 | @property (strong, nonatomic) UIWindow *window;
36 | 
37 | @property (strong, nonatomic) ViewController *viewController;
38 | 
39 | @end
40 | 


--------------------------------------------------------------------------------
/CachedWebView/AppDelegate.m:
--------------------------------------------------------------------------------
 1 | //
 2 | //  AppDelegate.m
 3 | //  CachedWebView
 4 | //
 5 | //  Created by Robert Napier on 1/29/12.
 6 | //  Copyright (c) 2012 Rob Napier.
 7 | //
 8 | //  This code is licensed under the MIT License:
 9 | //
10 | //  Permission is hereby granted, free of charge, to any person obtaining a
11 | //  copy of this software and associated documentation files (the "Software"),
12 | //  to deal in the Software without restriction, including without limitation
13 | //  the rights to use, copy, modify, merge, publish, distribute, sublicense,
14 | //  and/or sell copies of the Software, and to permit persons to whom the
15 | //  Software is furnished to do so, subject to the following conditions:
16 | //
17 | //  The above copyright notice and this permission notice shall be included in
18 | //  all copies or substantial portions of the Software.
19 | //
20 | //  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
21 | //  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
22 | //  FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE
23 | //  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
24 | //  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
25 | //  FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
26 | //  DEALINGS IN THE SOFTWARE.
27 | //
28 | 
29 | #import "AppDelegate.h"
30 | 
31 | #import "ViewController.h"
32 | #import "RNCachingURLProtocol.h"
33 | 
34 | @implementation AppDelegate
35 | 
36 | @synthesize window = _window;
37 | @synthesize viewController = _viewController;
38 | 
39 | - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
40 | {
41 |   [NSURLProtocol registerClass:[RNCachingURLProtocol class]];
42 | 
43 |   self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
44 |   self.viewController = [[ViewController alloc] initWithNibName:@"ViewController" bundle:nil];
45 |   self.window.rootViewController = self.viewController;
46 |   [self.window makeKeyAndVisible];
47 |   return YES;
48 | }
49 | 
50 | @end
51 | 


--------------------------------------------------------------------------------
/CachedWebView/CachedWebView-Info.plist:
--------------------------------------------------------------------------------
 1 | <?xml version="1.0" encoding="UTF-8"?>
 2 | <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 3 | <plist version="1.0">
 4 | <dict>
 5 | 	<key>CFBundleDevelopmentRegion</key>
 6 | 	<string>en</string>
 7 | 	<key>CFBundleDisplayName</key>
 8 | 	<string>${PRODUCT_NAME}</string>
 9 | 	<key>CFBundleExecutable</key>
10 | 	<string>${EXECUTABLE_NAME}</string>
11 | 	<key>CFBundleIdentifier</key>
12 | 	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
13 | 	<key>CFBundleInfoDictionaryVersion</key>
14 | 	<string>6.0</string>
15 | 	<key>CFBundleName</key>
16 | 	<string>${PRODUCT_NAME}</string>
17 | 	<key>CFBundlePackageType</key>
18 | 	<string>APPL</string>
19 | 	<key>CFBundleShortVersionString</key>
20 | 	<string>1.0</string>
21 | 	<key>CFBundleSignature</key>
22 | 	<string>????</string>
23 | 	<key>CFBundleVersion</key>
24 | 	<string>1.0</string>
25 | 	<key>LSRequiresIPhoneOS</key>
26 | 	<true/>
27 | 	<key>UIRequiredDeviceCapabilities</key>
28 | 	<array>
29 | 		<string>armv7</string>
30 | 	</array>
31 | 	<key>UISupportedInterfaceOrientations~ipad</key>
32 | 	<array>
33 | 		<string>UIInterfaceOrientationPortrait</string>
34 | 		<string>UIInterfaceOrientationPortraitUpsideDown</string>
35 | 		<string>UIInterfaceOrientationLandscapeLeft</string>
36 | 		<string>UIInterfaceOrientationLandscapeRight</string>
37 | 	</array>
38 | </dict>
39 | </plist>
40 | 


--------------------------------------------------------------------------------
/CachedWebView/CachedWebView-Prefix.pch:
--------------------------------------------------------------------------------
 1 | //
 2 | // Prefix header for all source files of the 'CachedWebView' target in the 'CachedWebView' project
 3 | //
 4 | 
 5 | #import <Availability.h>
 6 | 
 7 | #ifndef __IPHONE_4_0
 8 | #warning "This project uses features only available in iOS SDK 4.0 and later."
 9 | #endif
10 | 
11 | #ifdef __OBJC__
12 | 
13 | #import <UIKit/UIKit.h>
14 | #import <Foundation/Foundation.h>
15 | 
16 | #endif
17 | 


--------------------------------------------------------------------------------
/CachedWebView/ViewController.h:
--------------------------------------------------------------------------------
 1 | //
 2 | //  ViewController.h
 3 | //  CachedWebView
 4 | //
 5 | //  Created by Robert Napier on 1/29/12.
 6 | //  Copyright (c) 2012 Rob Napier.
 7 | //
 8 | //  This code is licensed under the MIT License:
 9 | //
10 | //  Permission is hereby granted, free of charge, to any person obtaining a
11 | //  copy of this software and associated documentation files (the "Software"),
12 | //  to deal in the Software without restriction, including without limitation
13 | //  the rights to use, copy, modify, merge, publish, distribute, sublicense,
14 | //  and/or sell copies of the Software, and to permit persons to whom the
15 | //  Software is furnished to do so, subject to the following conditions:
16 | //
17 | //  The above copyright notice and this permission notice shall be included in
18 | //  all copies or substantial portions of the Software.
19 | //
20 | //  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
21 | //  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
22 | //  FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE
23 | //  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
24 | //  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
25 | //  FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
26 | //  DEALINGS IN THE SOFTWARE.
27 | //
28 | 
29 | #import <UIKit/UIKit.h>
30 | 
31 | @interface ViewController : UIViewController
32 | @property (strong, nonatomic) IBOutlet UIWebView *webView;
33 | 
34 | @end
35 | 


--------------------------------------------------------------------------------
/CachedWebView/ViewController.m:
--------------------------------------------------------------------------------
 1 | //
 2 | //  ViewController.m
 3 | //  CachedWebView
 4 | //
 5 | //  Created by Robert Napier on 1/29/12.
 6 | //  Copyright (c) 2012 Rob Napier.
 7 | //
 8 | //  This code is licensed under the MIT License:
 9 | //
10 | //  Permission is hereby granted, free of charge, to any person obtaining a
11 | //  copy of this software and associated documentation files (the "Software"),
12 | //  to deal in the Software without restriction, including without limitation
13 | //  the rights to use, copy, modify, merge, publish, distribute, sublicense,
14 | //  and/or sell copies of the Software, and to permit persons to whom the
15 | //  Software is furnished to do so, subject to the following conditions:
16 | //
17 | //  The above copyright notice and this permission notice shall be included in
18 | //  all copies or substantial portions of the Software.
19 | //
20 | //  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
21 | //  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
22 | //  FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE
23 | //  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
24 | //  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
25 | //  FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
26 | //  DEALINGS IN THE SOFTWARE.
27 | //
28 | 
29 | #import "ViewController.h"
30 | 
31 | @interface ViewController ()
32 | 
33 | @end
34 | 
35 | @implementation ViewController
36 | @synthesize webView = webView_;
37 | 
38 | - (void)viewDidLoad
39 | {
40 |   [super viewDidLoad];
41 |   [self.webView loadRequest:[[NSURLRequest alloc] initWithURL:[NSURL URLWithString:@"http://cnn.com"]]];
42 | }
43 | 
44 | @end
45 | 


--------------------------------------------------------------------------------
/CachedWebView/en.lproj/InfoPlist.strings:
--------------------------------------------------------------------------------
1 | /* Localized versions of Info.plist keys */
2 | 
3 | 


--------------------------------------------------------------------------------
/CachedWebView/en.lproj/ViewController.xib:
--------------------------------------------------------------------------------
  1 | <?xml version="1.0" encoding="UTF-8"?>
  2 | <archive type="com.apple.InterfaceBuilder3.CocoaTouch.iPad.XIB" version="8.00">
  3 |   <data>
  4 |     <int key="IBDocument.SystemTarget">1280</int>
  5 |     <string key="IBDocument.SystemVersion">11C74</string>
  6 |     <string key="IBDocument.InterfaceBuilderVersion">1938</string>
  7 |     <string key="IBDocument.AppKitVersion">1138.23</string>
  8 |     <string key="IBDocument.HIToolboxVersion">567.00</string>
  9 |     <object class="NSMutableDictionary" key="IBDocument.PluginVersions">
 10 |       <string key="NS.key.0">com.apple.InterfaceBuilder.IBCocoaTouchPlugin</string>
 11 |       <string key="NS.object.0">933</string>
 12 |     </object>
 13 |     <array key="IBDocument.IntegratedClassDependencies">
 14 |       <string>IBProxyObject</string>
 15 |       <string>IBUIView</string>
 16 |       <string>IBUIWebView</string>
 17 |     </array>
 18 |     <array key="IBDocument.PluginDependencies">
 19 |       <string>com.apple.InterfaceBuilder.IBCocoaTouchPlugin</string>
 20 |     </array>
 21 |     <object class="NSMutableDictionary" key="IBDocument.Metadata">
 22 |       <string key="NS.key.0">PluginDependencyRecalculationVersion</string>
 23 |       <integer value="1" key="NS.object.0"/>
 24 |     </object>
 25 |     <array class="NSMutableArray" key="IBDocument.RootObjects" id="1000">
 26 |       <object class="IBProxyObject" id="841351856">
 27 |         <string key="IBProxiedObjectIdentifier">IBFilesOwner</string>
 28 |         <string key="targetRuntimeIdentifier">IBIPadFramework</string>
 29 |       </object>
 30 |       <object class="IBProxyObject" id="606714003">
 31 |         <string key="IBProxiedObjectIdentifier">IBFirstResponder</string>
 32 |         <string key="targetRuntimeIdentifier">IBIPadFramework</string>
 33 |       </object>
 34 |       <object class="IBUIView" id="766721923">
 35 |         <reference key="NSNextResponder"/>
 36 |         <int key="NSvFlags">274</int>
 37 |         <array class="NSMutableArray" key="NSSubviews">
 38 |           <object class="IBUIWebView" id="374549251">
 39 |             <reference key="NSNextResponder" ref="766721923"/>
 40 |             <int key="NSvFlags">274</int>
 41 |             <string key="NSFrameSize">{768, 1004}</string>
 42 |             <reference key="NSSuperview" ref="766721923"/>
 43 |             <reference key="NSWindow"/>
 44 |             <string key="NSReuseIdentifierKey">_NS:693</string>
 45 |             <object class="NSColor" key="IBUIBackgroundColor">
 46 |               <int key="NSColorSpace">1</int>
 47 |               <bytes key="NSRGB">MSAxIDEAA</bytes>
 48 |             </object>
 49 |             <string key="targetRuntimeIdentifier">IBIPadFramework</string>
 50 |             <int key="IBUIDataDetectorTypes">1</int>
 51 |             <bool key="IBUIDetectsPhoneNumbers">YES</bool>
 52 |           </object>
 53 |         </array>
 54 |         <string key="NSFrame">{{0, 20}, {768, 1004}}</string>
 55 |         <reference key="NSSuperview"/>
 56 |         <reference key="NSWindow"/>
 57 |         <reference key="NSNextKeyView"/>
 58 |         <object class="NSColor" key="IBUIBackgroundColor">
 59 |           <int key="NSColorSpace">3</int>
 60 |           <bytes key="NSWhite">MQA</bytes>
 61 |           <object class="NSColorSpace" key="NSCustomColorSpace">
 62 |             <int key="NSID">2</int>
 63 |           </object>
 64 |         </object>
 65 |         <object class="IBUISimulatedStatusBarMetrics" key="IBUISimulatedStatusBarMetrics">
 66 |           <int key="IBUIStatusBarStyle">2</int>
 67 |         </object>
 68 |         <string key="targetRuntimeIdentifier">IBIPadFramework</string>
 69 |       </object>
 70 |     </array>
 71 |     <object class="IBObjectContainer" key="IBDocument.Objects">
 72 |       <array class="NSMutableArray" key="connectionRecords">
 73 |         <object class="IBConnectionRecord">
 74 |           <object class="IBCocoaTouchOutletConnection" key="connection">
 75 |             <string key="label">view</string>
 76 |             <reference key="source" ref="841351856"/>
 77 |             <reference key="destination" ref="766721923"/>
 78 |           </object>
 79 |           <int key="connectionID">3</int>
 80 |         </object>
 81 |         <object class="IBConnectionRecord">
 82 |           <object class="IBCocoaTouchOutletConnection" key="connection">
 83 |             <string key="label">webView</string>
 84 |             <reference key="source" ref="841351856"/>
 85 |             <reference key="destination" ref="374549251"/>
 86 |           </object>
 87 |           <int key="connectionID">5</int>
 88 |         </object>
 89 |       </array>
 90 |       <object class="IBMutableOrderedSet" key="objectRecords">
 91 |         <array key="orderedObjects">
 92 |           <object class="IBObjectRecord">
 93 |             <int key="objectID">0</int>
 94 |             <array key="object" id="0"/>
 95 |             <reference key="children" ref="1000"/>
 96 |             <nil key="parent"/>
 97 |           </object>
 98 |           <object class="IBObjectRecord">
 99 |             <int key="objectID">-1</int>
100 |             <reference key="object" ref="841351856"/>
101 |             <reference key="parent" ref="0"/>
102 |             <string key="objectName">File's Owner</string>
103 |           </object>
104 |           <object class="IBObjectRecord">
105 |             <int key="objectID">-2</int>
106 |             <reference key="object" ref="606714003"/>
107 |             <reference key="parent" ref="0"/>
108 |           </object>
109 |           <object class="IBObjectRecord">
110 |             <int key="objectID">2</int>
111 |             <reference key="object" ref="766721923"/>
112 |             <array class="NSMutableArray" key="children">
113 |               <reference ref="374549251"/>
114 |             </array>
115 |             <reference key="parent" ref="0"/>
116 |           </object>
117 |           <object class="IBObjectRecord">
118 |             <int key="objectID">4</int>
119 |             <reference key="object" ref="374549251"/>
120 |             <reference key="parent" ref="766721923"/>
121 |           </object>
122 |         </array>
123 |       </object>
124 |       <dictionary class="NSMutableDictionary" key="flattenedProperties">
125 |         <string key="-1.CustomClassName">ViewController</string>
126 |         <string key="-1.IBPluginDependency">com.apple.InterfaceBuilder.IBCocoaTouchPlugin</string>
127 |         <string key="-2.CustomClassName">UIResponder</string>
128 |         <string key="-2.IBPluginDependency">com.apple.InterfaceBuilder.IBCocoaTouchPlugin</string>
129 |         <string key="2.IBPluginDependency">com.apple.InterfaceBuilder.IBCocoaTouchPlugin</string>
130 |         <string key="4.IBPluginDependency">com.apple.InterfaceBuilder.IBCocoaTouchPlugin</string>
131 |       </dictionary>
132 |       <dictionary class="NSMutableDictionary" key="unlocalizedProperties"/>
133 |       <nil key="activeLocalization"/>
134 |       <dictionary class="NSMutableDictionary" key="localizations"/>
135 |       <nil key="sourceID"/>
136 |       <int key="maxID">5</int>
137 |     </object>
138 |     <object class="IBClassDescriber" key="IBDocument.Classes">
139 |       <array class="NSMutableArray" key="referencedPartialClassDescriptions">
140 |         <object class="IBPartialClassDescription">
141 |           <string key="className">ViewController</string>
142 |           <string key="superclassName">UIViewController</string>
143 |           <object class="NSMutableDictionary" key="outlets">
144 |             <string key="NS.key.0">webView</string>
145 |             <string key="NS.object.0">UIWebView</string>
146 |           </object>
147 |           <object class="NSMutableDictionary" key="toOneOutletInfosByName">
148 |             <string key="NS.key.0">webView</string>
149 |             <object class="IBToOneOutletInfo" key="NS.object.0">
150 |               <string key="name">webView</string>
151 |               <string key="candidateClassName">UIWebView</string>
152 |             </object>
153 |           </object>
154 |           <object class="IBClassDescriptionSource" key="sourceIdentifier">
155 |             <string key="majorKey">IBProjectSource</string>
156 |             <string key="minorKey">./Classes/ViewController.h</string>
157 |           </object>
158 |         </object>
159 |       </array>
160 |     </object>
161 |     <int key="IBDocument.localizationMode">0</int>
162 |     <string key="IBDocument.TargetRuntimeIdentifier">IBIPadFramework</string>
163 |     <bool key="IBDocument.PluginDeclaredDependenciesTrackSystemTargetVersion">YES</bool>
164 |     <int key="IBDocument.defaultPropertyAccessControl">3</int>
165 |     <string key="IBCocoaTouchPluginVersion">933</string>
166 |   </data>
167 | </archive>
168 | 


--------------------------------------------------------------------------------
/CachedWebView/main.m:
--------------------------------------------------------------------------------
 1 | //
 2 | //  main.m
 3 | //  CachedWebView
 4 | //
 5 | //  Created by Robert Napier on 1/29/12.
 6 | //  Copyright (c) 2012 __MyCompanyName__. All rights reserved.
 7 | //
 8 | 
 9 | #import "AppDelegate.h"
10 | 
11 | int main(int argc, char *argv[]) {
12 |   @autoreleasepool {
13 |     return UIApplicationMain(argc, argv, nil, NSStringFromClass([AppDelegate class]));
14 |   }
15 | }
16 | 


--------------------------------------------------------------------------------
/NSString+Sha1.h:
--------------------------------------------------------------------------------
 1 | 
 2 | #import <Foundation/Foundation.h>
 3 | #import <CommonCrypto/CommonDigest.h>
 4 | 
 5 | /**
 6 |  * This extension contains several a helper
 7 |  * for creating a sha1 hash from instances of NSString
 8 |  */
 9 | @interface NSString (Sha1)
10 | 
11 | /**
12 |  * Creates a SHA1 (hash) representation of NSString.
13 |  *
14 |  * @return NSString
15 |  */
16 | - (NSString *)sha1;
17 | 
18 | 
19 | @end
20 | 


--------------------------------------------------------------------------------
/NSString+Sha1.m:
--------------------------------------------------------------------------------
 1 | 
 2 | #import "NSString+Sha1.h"
 3 | 
 4 | @implementation NSString (Sha1)
 5 | 
 6 | - (NSString *)sha1
 7 | {
 8 |     // see http://www.makebetterthings.com/iphone/how-to-get-md5-and-sha1-in-objective-c-ios-sdk/
 9 |     NSData *data = [self dataUsingEncoding:NSUTF8StringEncoding];
10 |     uint8_t digest[CC_SHA1_DIGEST_LENGTH];
11 |     
12 |     CC_SHA1(data.bytes, (CC_LONG)data.length, digest);
13 |     
14 |     NSMutableString *output = [NSMutableString stringWithCapacity:CC_SHA1_DIGEST_LENGTH * 2];
15 |     
16 |     for (int i = 0; i < CC_SHA1_DIGEST_LENGTH; i++) {
17 |         [output appendFormat:@"%02x", digest[i]];
18 |     }
19 |     
20 |     return output;
21 | }
22 | 
23 | 
24 | @end
25 | 


--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
 1 | # BACKGROUND
 2 | 
 3 | RNCachingURLProtocol is a simple shim for the HTTP protocol (that’s not
 4 | nearly as scary as it sounds). Anytime a URL is downloaded, the response is
 5 | cached to disk. Anytime a URL is requested, if we’re online then things
 6 | proceed normally. If we’re offline, then we retrieve the cached version.
 7 | 
 8 | The point of RNCachingURLProtocol is mostly to demonstrate how this is done.
 9 | The current implementation is extremely simple. In particular, it doesn’t
10 | worry about cleaning up the cache. The assumption is that you’re caching just
11 | a few simple things, like your “Latest News” page (which was the problem I
12 | was solving). It caches all HTTP traffic, so without some modifications, it’s
13 | not appropriate for an app that has a lot of HTTP connections (see
14 | MKNetworkKit for that). But if you need to cache some URLs and not others,
15 | that is easy to implement.
16 | 
17 | You should also look at [AFCache](https://github.com/artifacts/AFCache) for a
18 | more powerful caching engine that is currently integrating the ideas of
19 | RNCachingURLProtocol.
20 | 
21 | # USAGE
22 | 
23 | 1. To build, you will need the Reachability code from Apple (included). That requires that you link with
24 |    `SystemConfiguration.framework`.
25 | 
26 | 2. At some point early in the program (usually `application:didFinishLaunchingWithOptions:`),
27 |    call the following:
28 | 
29 |       `[NSURLProtocol registerClass:[RNCachingURLProtocol class]];`
30 | 
31 | 3. There is no step 3.
32 | 
33 | For more details see
34 |    [Drop-in offline caching for UIWebView (and NSURLProtocol)](http://robnapier.net/blog/offline-uiwebview-nsurlprotocol-588).
35 | 
36 | # EXAMPLE
37 | 
38 | See the CachedWebView project for example usage.
39 | 
40 | # LICENSE
41 | 
42 |  This code is licensed under the MIT License:
43 |  
44 |  Permission is hereby granted, free of charge, to any person obtaining a
45 |  copy of this software and associated documentation files (the "Software"),
46 |  to deal in the Software without restriction, including without limitation
47 |  the rights to use, copy, modify, merge, publish, distribute, sublicense,
48 |  and/or sell copies of the Software, and to permit persons to whom the
49 |  Software is furnished to do so, subject to the following conditions:
50 | 
51 |  The above copyright notice and this permission notice shall be included in
52 |  all copies or substantial portions of the Software.
53 | 
54 |  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
55 |  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
56 |  FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE
57 |  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
58 |  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
59 |  FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
60 |  DEALINGS IN THE SOFTWARE.
61 | 


--------------------------------------------------------------------------------
/RNCachingURLProtocol.h:
--------------------------------------------------------------------------------
 1 | //
 2 | //  RNCachingURLProtocol.h
 3 | //
 4 | //  Created by Robert Napier on 1/10/12.
 5 | //  Copyright (c) 2012 Rob Napier. All rights reserved.
 6 | //
 7 | //  This code is licensed under the MIT License:
 8 | //
 9 | //  Permission is hereby granted, free of charge, to any person obtaining a
10 | //  copy of this software and associated documentation files (the "Software"),
11 | //  to deal in the Software without restriction, including without limitation
12 | //  the rights to use, copy, modify, merge, publish, distribute, sublicense,
13 | //  and/or sell copies of the Software, and to permit persons to whom the
14 | //  Software is furnished to do so, subject to the following conditions:
15 | //
16 | //  The above copyright notice and this permission notice shall be included in
17 | //  all copies or substantial portions of the Software.
18 | //
19 | //  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
20 | //  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21 | //  FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE
22 | //  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
23 | //  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
24 | //  FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
25 | //  DEALINGS IN THE SOFTWARE.
26 | //
27 | 
28 | // RNCachingURLProtocol is a simple shim for the HTTP protocol (that’s not
29 | // nearly as scary as it sounds). Anytime a URL is download, the response is
30 | // cached to disk. Anytime a URL is requested, if we’re online then things
31 | // proceed normally. If we’re offline, then we retrieve the cached version.
32 | //
33 | // The point of RNCachingURLProtocol is mostly to demonstrate how this is done.
34 | // The current implementation is extremely simple. In particular, it doesn’t
35 | // worry about cleaning up the cache. The assumption is that you’re caching just
36 | // a few simple things, like your “Latest News” page (which was the problem I
37 | // was solving). It caches all HTTP traffic, so without some modifications, it’s
38 | // not appropriate for an app that has a lot of HTTP connections (see
39 | // MKNetworkKit for that). But if you need to cache some URLs and not others,
40 | // that is easy to implement.
41 | //
42 | // You should also look at [AFCache](https://github.com/artifacts/AFCache) for a
43 | // more powerful caching engine that is currently integrating the ideas of
44 | // RNCachingURLProtocol.
45 | //
46 | // A quick rundown of how to use it:
47 | //
48 | // 1. To build, you will need the Reachability code from Apple (included). That requires that you link with
49 | //    `SystemConfiguration.framework`.
50 | //
51 | // 2. At some point early in the program (application:didFinishLaunchingWithOptions:),
52 | //    call the following:
53 | //
54 | //      `[NSURLProtocol registerClass:[RNCachingURLProtocol class]];`
55 | //
56 | // 3. There is no step 3.
57 | //
58 | // For more details see
59 | //    [Drop-in offline caching for UIWebView (and NSURLProtocol)](http://robnapier.net/blog/offline-uiwebview-nsurlprotocol-588).
60 | 
61 | #import <Foundation/Foundation.h>
62 | 
63 | @interface RNCachingURLProtocol : NSURLProtocol
64 | 
65 | + (NSSet *)supportedSchemes;
66 | + (void)setSupportedSchemes:(NSSet *)supportedSchemes;
67 | 
68 | - (NSString *)cachePathForRequest:(NSURLRequest *)aRequest;
69 | - (BOOL) useCache;
70 | 
71 | @end
72 | 


--------------------------------------------------------------------------------
/RNCachingURLProtocol.m:
--------------------------------------------------------------------------------
  1 | //
  2 | //  RNCachingURLProtocol.m
  3 | //
  4 | //  Created by Robert Napier on 1/10/12.
  5 | //  Copyright (c) 2012 Rob Napier.
  6 | //
  7 | //  This code is licensed under the MIT License:
  8 | //
  9 | //  Permission is hereby granted, free of charge, to any person obtaining a
 10 | //  copy of this software and associated documentation files (the "Software"),
 11 | //  to deal in the Software without restriction, including without limitation
 12 | //  the rights to use, copy, modify, merge, publish, distribute, sublicense,
 13 | //  and/or sell copies of the Software, and to permit persons to whom the
 14 | //  Software is furnished to do so, subject to the following conditions:
 15 | //
 16 | //  The above copyright notice and this permission notice shall be included in
 17 | //  all copies or substantial portions of the Software.
 18 | //
 19 | //  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 20 | //  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 21 | //  FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE
 22 | //  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 23 | //  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 24 | //  FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 25 | //  DEALINGS IN THE SOFTWARE.
 26 | //
 27 | 
 28 | #import "RNCachingURLProtocol.h"
 29 | #import "Reachability.h"
 30 | #import "NSString+Sha1.h"
 31 | 
 32 | #define WORKAROUND_MUTABLE_COPY_LEAK 1
 33 | 
 34 | #if WORKAROUND_MUTABLE_COPY_LEAK
 35 | // required to workaround http://openradar.appspot.com/11596316
 36 | @interface NSURLRequest(MutableCopyWorkaround)
 37 | 
 38 | - (id) mutableCopyWorkaround;
 39 | 
 40 | @end
 41 | #endif
 42 | 
 43 | @interface RNCachedData : NSObject <NSCoding>
 44 | @property (nonatomic, readwrite, strong) NSData *data;
 45 | @property (nonatomic, readwrite, strong) NSURLResponse *response;
 46 | @property (nonatomic, readwrite, strong) NSURLRequest *redirectRequest;
 47 | @end
 48 | 
 49 | static NSString *RNCachingURLHeader = @"X-RNCache";
 50 | 
 51 | @interface RNCachingURLProtocol () // <NSURLConnectionDelegate, NSURLConnectionDataDelegate> iOS5-only
 52 | @property (nonatomic, readwrite, strong) NSURLConnection *connection;
 53 | @property (nonatomic, readwrite, strong) NSMutableData *data;
 54 | @property (nonatomic, readwrite, strong) NSURLResponse *response;
 55 | - (void)appendData:(NSData *)newData;
 56 | @end
 57 | 
 58 | static NSObject *RNCachingSupportedSchemesMonitor;
 59 | static NSSet *RNCachingSupportedSchemes;
 60 | 
 61 | @implementation RNCachingURLProtocol
 62 | @synthesize connection = connection_;
 63 | @synthesize data = data_;
 64 | @synthesize response = response_;
 65 | 
 66 | + (void)initialize
 67 | {
 68 |   if (self == [RNCachingURLProtocol class])
 69 |   {
 70 |     static dispatch_once_t onceToken;
 71 |     dispatch_once(&onceToken, ^{
 72 |       RNCachingSupportedSchemesMonitor = [NSObject new];
 73 |     });
 74 |         
 75 |     [self setSupportedSchemes:[NSSet setWithObject:@"http"]];
 76 |   }
 77 | }
 78 | 
 79 | + (BOOL)canInitWithRequest:(NSURLRequest *)request
 80 | {
 81 |   // only handle http requests we haven't marked with our header.
 82 |   if ([[self supportedSchemes] containsObject:[[request URL] scheme]] &&
 83 |       ([request valueForHTTPHeaderField:RNCachingURLHeader] == nil))
 84 |   {
 85 |     return YES;
 86 |   }
 87 |   return NO;
 88 | }
 89 | 
 90 | + (NSURLRequest *)canonicalRequestForRequest:(NSURLRequest *)request
 91 | {
 92 |   return request;
 93 | }
 94 | 
 95 | - (NSString *)cachePathForRequest:(NSURLRequest *)aRequest
 96 | {
 97 |   // This stores in the Caches directory, which can be deleted when space is low, but we only use it for offline access
 98 |   NSString *cachesPath = [NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES) lastObject];
 99 |   NSString *fileName = [[[aRequest URL] absoluteString] sha1];
100 | 
101 |   return [cachesPath stringByAppendingPathComponent:fileName];
102 | }
103 | 
104 | - (void)startLoading
105 | {
106 |   if (![self useCache]) {
107 |     NSMutableURLRequest *connectionRequest = 
108 | #if WORKAROUND_MUTABLE_COPY_LEAK
109 |       [[self request] mutableCopyWorkaround];
110 | #else
111 |       [[self request] mutableCopy];
112 | #endif
113 |     // we need to mark this request with our header so we know not to handle it in +[NSURLProtocol canInitWithRequest:].
114 |     [connectionRequest setValue:@"" forHTTPHeaderField:RNCachingURLHeader];
115 |     NSURLConnection *connection = [NSURLConnection connectionWithRequest:connectionRequest
116 |                                                                 delegate:self];
117 |     [self setConnection:connection];
118 |   }
119 |   else {
120 |     RNCachedData *cache = [NSKeyedUnarchiver unarchiveObjectWithFile:[self cachePathForRequest:[self request]]];
121 |     if (cache) {
122 |       NSData *data = [cache data];
123 |       NSURLResponse *response = [cache response];
124 |       NSURLRequest *redirectRequest = [cache redirectRequest];
125 |       if (redirectRequest) {
126 |         [[self client] URLProtocol:self wasRedirectedToRequest:redirectRequest redirectResponse:response];
127 |       } else {
128 |           
129 |         [[self client] URLProtocol:self didReceiveResponse:response cacheStoragePolicy:NSURLCacheStorageNotAllowed]; // we handle caching ourselves.
130 |         [[self client] URLProtocol:self didLoadData:data];
131 |         [[self client] URLProtocolDidFinishLoading:self];
132 |       }
133 |     }
134 |     else {
135 |       [[self client] URLProtocol:self didFailWithError:[NSError errorWithDomain:NSURLErrorDomain code:NSURLErrorCannotConnectToHost userInfo:nil]];
136 |     }
137 |   }
138 | }
139 | 
140 | - (void)stopLoading
141 | {
142 |   [[self connection] cancel];
143 | }
144 | 
145 | // NSURLConnection delegates (generally we pass these on to our client)
146 | 
147 | - (NSURLRequest *)connection:(NSURLConnection *)connection willSendRequest:(NSURLRequest *)request redirectResponse:(NSURLResponse *)response
148 | {
149 | // Thanks to Nick Dowell https://gist.github.com/1885821
150 |   if (response != nil) {
151 |       NSMutableURLRequest *redirectableRequest =
152 | #if WORKAROUND_MUTABLE_COPY_LEAK
153 |       [request mutableCopyWorkaround];
154 | #else
155 |       [request mutableCopy];
156 | #endif
157 |     // We need to remove our header so we know to handle this request and cache it.
158 |     // There are 3 requests in flight: the outside request, which we handled, the internal request,
159 |     // which we marked with our header, and the redirectableRequest, which we're modifying here.
160 |     // The redirectable request will cause a new outside request from the NSURLProtocolClient, which 
161 |     // must not be marked with our header.
162 |     [redirectableRequest setValue:nil forHTTPHeaderField:RNCachingURLHeader];
163 | 
164 |     NSString *cachePath = [self cachePathForRequest:[self request]];
165 |     RNCachedData *cache = [RNCachedData new];
166 |     [cache setResponse:response];
167 |     [cache setData:[self data]];
168 |     [cache setRedirectRequest:redirectableRequest];
169 |     [NSKeyedArchiver archiveRootObject:cache toFile:cachePath];
170 |     [[self client] URLProtocol:self wasRedirectedToRequest:redirectableRequest redirectResponse:response];
171 |     return redirectableRequest;
172 |   } else {
173 |     return request;
174 |   }
175 | }
176 | 
177 | - (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data
178 | {
179 |   [[self client] URLProtocol:self didLoadData:data];
180 |   [self appendData:data];
181 | }
182 | 
183 | - (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error
184 | {
185 |   [[self client] URLProtocol:self didFailWithError:error];
186 |   [self setConnection:nil];
187 |   [self setData:nil];
188 |   [self setResponse:nil];
189 | }
190 | 
191 | - (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response
192 | {
193 |   [self setResponse:response];
194 |   [[self client] URLProtocol:self didReceiveResponse:response cacheStoragePolicy:NSURLCacheStorageNotAllowed];  // We cache ourselves.
195 | }
196 | 
197 | - (void)connectionDidFinishLoading:(NSURLConnection *)connection
198 | {
199 |   [[self client] URLProtocolDidFinishLoading:self];
200 | 
201 |   NSString *cachePath = [self cachePathForRequest:[self request]];
202 |   RNCachedData *cache = [RNCachedData new];
203 |   [cache setResponse:[self response]];
204 |   [cache setData:[self data]];
205 |   [NSKeyedArchiver archiveRootObject:cache toFile:cachePath];
206 | 
207 |   [self setConnection:nil];
208 |   [self setData:nil];
209 |   [self setResponse:nil];
210 | }
211 | 
212 | - (BOOL) useCache 
213 | {
214 |     BOOL reachable = (BOOL) [[Reachability reachabilityWithHostName:[[[self request] URL] host]] currentReachabilityStatus] != NotReachable;
215 |     return !reachable;
216 | }
217 | 
218 | - (void)appendData:(NSData *)newData
219 | {
220 |   if ([self data] == nil) {
221 |     [self setData:[newData mutableCopy]];
222 |   }
223 |   else {
224 |     [[self data] appendData:newData];
225 |   }
226 | }
227 | 
228 | + (NSSet *)supportedSchemes {
229 |   NSSet *supportedSchemes;
230 |   @synchronized(RNCachingSupportedSchemesMonitor)
231 |   {
232 |     supportedSchemes = RNCachingSupportedSchemes;
233 |   }
234 |   return supportedSchemes;
235 | }
236 | 
237 | + (void)setSupportedSchemes:(NSSet *)supportedSchemes
238 | {
239 |   @synchronized(RNCachingSupportedSchemesMonitor)
240 |   {
241 |     RNCachingSupportedSchemes = supportedSchemes;
242 |   }
243 | }
244 | 
245 | @end
246 | 
247 | static NSString *const kDataKey = @"data";
248 | static NSString *const kResponseKey = @"response";
249 | static NSString *const kRedirectRequestKey = @"redirectRequest";
250 | 
251 | @implementation RNCachedData
252 | @synthesize data = data_;
253 | @synthesize response = response_;
254 | @synthesize redirectRequest = redirectRequest_;
255 | 
256 | - (void)encodeWithCoder:(NSCoder *)aCoder
257 | {
258 |   [aCoder encodeObject:[self data] forKey:kDataKey];
259 |   [aCoder encodeObject:[self response] forKey:kResponseKey];
260 |   [aCoder encodeObject:[self redirectRequest] forKey:kRedirectRequestKey];
261 | }
262 | 
263 | - (id)initWithCoder:(NSCoder *)aDecoder
264 | {
265 |   self = [super init];
266 |   if (self != nil) {
267 |     [self setData:[aDecoder decodeObjectForKey:kDataKey]];
268 |     [self setResponse:[aDecoder decodeObjectForKey:kResponseKey]];
269 |     [self setRedirectRequest:[aDecoder decodeObjectForKey:kRedirectRequestKey]];
270 |   }
271 | 
272 |   return self;
273 | }
274 | 
275 | @end
276 | 
277 | #if WORKAROUND_MUTABLE_COPY_LEAK
278 | @implementation NSURLRequest(MutableCopyWorkaround)
279 | 
280 | - (id) mutableCopyWorkaround {
281 |     NSMutableURLRequest *mutableURLRequest = [[NSMutableURLRequest alloc] initWithURL:[self URL]
282 |                                                                           cachePolicy:[self cachePolicy]
283 |                                                                       timeoutInterval:[self timeoutInterval]];
284 |     [mutableURLRequest setAllHTTPHeaderFields:[self allHTTPHeaderFields]];
285 |     if ([self HTTPBodyStream]) {
286 |         [mutableURLRequest setHTTPBodyStream:[self HTTPBodyStream]];
287 |     } else {
288 |         [mutableURLRequest setHTTPBody:[self HTTPBody]];
289 |     }
290 |     [mutableURLRequest setHTTPMethod:[self HTTPMethod]];
291 |     
292 |     return mutableURLRequest;
293 | }
294 | 
295 | @end
296 | #endif
297 | 


--------------------------------------------------------------------------------
/Reachability.h:
--------------------------------------------------------------------------------
 1 | /*
 2 |  Copyright (C) 2016 Apple Inc. All Rights Reserved.
 3 |  See LICENSE.txt for this sample’s licensing information
 4 | 
 5 |  Abstract:
 6 |  Basic demonstration of how to use the SystemConfiguration Reachablity APIs.
 7 |  */
 8 | 
 9 | #import <Foundation/Foundation.h>
10 | #import <SystemConfiguration/SystemConfiguration.h>
11 | #import <netinet/in.h>
12 | 
13 | 
14 | typedef enum : NSInteger {
15 |     NotReachable = 0,
16 |     ReachableViaWiFi,
17 |     ReachableViaWWAN
18 | } NetworkStatus;
19 | 
20 | #pragma mark IPv6 Support
21 | //Reachability fully support IPv6.  For full details, see ReadMe.md.
22 | 
23 | 
24 | extern NSString *kReachabilityChangedNotification;
25 | 
26 | 
27 | @interface Reachability : NSObject
28 | 
29 | /*!
30 |  * Use to check the reachability of a given host name.
31 |  */
32 | + (instancetype)reachabilityWithHostName:(NSString *)hostName;
33 | 
34 | /*!
35 |  * Use to check the reachability of a given IP address.
36 |  */
37 | + (instancetype)reachabilityWithAddress:(const struct sockaddr *)hostAddress;
38 | 
39 | /*!
40 |  * Checks whether the default route is available. Should be used by applications that do not connect to a particular host.
41 |  */
42 | + (instancetype)reachabilityForInternetConnection;
43 | 
44 | 
45 | #pragma mark reachabilityForLocalWiFi
46 | //reachabilityForLocalWiFi has been removed from the sample.  See ReadMe.md for more information.
47 | //+ (instancetype)reachabilityForLocalWiFi;
48 | 
49 | /*!
50 |  * Start listening for reachability notifications on the current run loop.
51 |  */
52 | - (BOOL)startNotifier;
53 | - (void)stopNotifier;
54 | 
55 | - (NetworkStatus)currentReachabilityStatus;
56 | 
57 | /*!
58 |  * WWAN may be available, but not active until a connection has been established. WiFi may require a connection for VPN on Demand.
59 |  */
60 | - (BOOL)connectionRequired;
61 | 
62 | @end
63 | 


--------------------------------------------------------------------------------
/Reachability.m:
--------------------------------------------------------------------------------
  1 | /*
  2 |  Copyright (C) 2016 Apple Inc. All Rights Reserved.
  3 |  See LICENSE.txt for this sample’s licensing information
  4 | 
  5 |  Abstract:
  6 |  Basic demonstration of how to use the SystemConfiguration Reachablity APIs.
  7 |  */
  8 | 
  9 | #import <arpa/inet.h>
 10 | #import <ifaddrs.h>
 11 | #import <netdb.h>
 12 | #import <sys/socket.h>
 13 | #import <netinet/in.h>
 14 | 
 15 | #import <CoreFoundation/CoreFoundation.h>
 16 | 
 17 | #import "Reachability.h"
 18 | 
 19 | #pragma mark IPv6 Support
 20 | //Reachability fully support IPv6.  For full details, see ReadMe.md.
 21 | 
 22 | 
 23 | NSString *kReachabilityChangedNotification = @"kNetworkReachabilityChangedNotification";
 24 | 
 25 | 
 26 | #pragma mark - Supporting functions
 27 | 
 28 | #define kShouldPrintReachabilityFlags 1
 29 | 
 30 | static void PrintReachabilityFlags(SCNetworkReachabilityFlags flags, const char* comment)
 31 | {
 32 | #if kShouldPrintReachabilityFlags
 33 | 
 34 |     NSLog(@"Reachability Flag Status: %c%c %c%c%c%c%c%c%c %s\n",
 35 |           (flags & kSCNetworkReachabilityFlagsIsWWAN)               ? 'W' : '-',
 36 |           (flags & kSCNetworkReachabilityFlagsReachable)            ? 'R' : '-',
 37 | 
 38 |           (flags & kSCNetworkReachabilityFlagsTransientConnection)  ? 't' : '-',
 39 |           (flags & kSCNetworkReachabilityFlagsConnectionRequired)   ? 'c' : '-',
 40 |           (flags & kSCNetworkReachabilityFlagsConnectionOnTraffic)  ? 'C' : '-',
 41 |           (flags & kSCNetworkReachabilityFlagsInterventionRequired) ? 'i' : '-',
 42 |           (flags & kSCNetworkReachabilityFlagsConnectionOnDemand)   ? 'D' : '-',
 43 |           (flags & kSCNetworkReachabilityFlagsIsLocalAddress)       ? 'l' : '-',
 44 |           (flags & kSCNetworkReachabilityFlagsIsDirect)             ? 'd' : '-',
 45 |           comment
 46 |           );
 47 | #endif
 48 | }
 49 | 
 50 | 
 51 | static void ReachabilityCallback(SCNetworkReachabilityRef target, SCNetworkReachabilityFlags flags, void* info)
 52 | {
 53 | #pragma unused (target, flags)
 54 |     NSCAssert(info != NULL, @"info was NULL in ReachabilityCallback");
 55 |     NSCAssert([(__bridge NSObject*) info isKindOfClass: [Reachability class]], @"info was wrong class in ReachabilityCallback");
 56 | 
 57 |     Reachability* noteObject = (__bridge Reachability *)info;
 58 |     // Post a notification to notify the client that the network reachability changed.
 59 |     [[NSNotificationCenter defaultCenter] postNotificationName: kReachabilityChangedNotification object: noteObject];
 60 | }
 61 | 
 62 | 
 63 | #pragma mark - Reachability implementation
 64 | 
 65 | @implementation Reachability
 66 | {
 67 |     SCNetworkReachabilityRef _reachabilityRef;
 68 | }
 69 | 
 70 | + (instancetype)reachabilityWithHostName:(NSString *)hostName
 71 | {
 72 |     Reachability* returnValue = NULL;
 73 |     SCNetworkReachabilityRef reachability = SCNetworkReachabilityCreateWithName(NULL, [hostName UTF8String]);
 74 |     if (reachability != NULL)
 75 |     {
 76 |         returnValue= [[self alloc] init];
 77 |         if (returnValue != NULL)
 78 |         {
 79 |             returnValue->_reachabilityRef = reachability;
 80 |         }
 81 |         else {
 82 |             CFRelease(reachability);
 83 |         }
 84 |     }
 85 |     return returnValue;
 86 | }
 87 | 
 88 | 
 89 | + (instancetype)reachabilityWithAddress:(const struct sockaddr *)hostAddress
 90 | {
 91 |     SCNetworkReachabilityRef reachability = SCNetworkReachabilityCreateWithAddress(kCFAllocatorDefault, hostAddress);
 92 | 
 93 |     Reachability* returnValue = NULL;
 94 | 
 95 |     if (reachability != NULL)
 96 |     {
 97 |         returnValue = [[self alloc] init];
 98 |         if (returnValue != NULL)
 99 |         {
100 |             returnValue->_reachabilityRef = reachability;
101 |         }
102 |         else {
103 |             CFRelease(reachability);
104 |         }
105 |     }
106 |     return returnValue;
107 | }
108 | 
109 | 
110 | + (instancetype)reachabilityForInternetConnection
111 | {
112 |     struct sockaddr_in zeroAddress;
113 |     bzero(&zeroAddress, sizeof(zeroAddress));
114 |     zeroAddress.sin_len = sizeof(zeroAddress);
115 |     zeroAddress.sin_family = AF_INET;
116 | 
117 |     return [self reachabilityWithAddress: (const struct sockaddr *) &zeroAddress];
118 | }
119 | 
120 | #pragma mark reachabilityForLocalWiFi
121 | //reachabilityForLocalWiFi has been removed from the sample.  See ReadMe.md for more information.
122 | //+ (instancetype)reachabilityForLocalWiFi
123 | 
124 | 
125 | 
126 | #pragma mark - Start and stop notifier
127 | 
128 | - (BOOL)startNotifier
129 | {
130 |     BOOL returnValue = NO;
131 |     SCNetworkReachabilityContext context = {0, (__bridge void *)(self), NULL, NULL, NULL};
132 | 
133 |     if (SCNetworkReachabilitySetCallback(_reachabilityRef, ReachabilityCallback, &context))
134 |     {
135 |         if (SCNetworkReachabilityScheduleWithRunLoop(_reachabilityRef, CFRunLoopGetCurrent(), kCFRunLoopDefaultMode))
136 |         {
137 |             returnValue = YES;
138 |         }
139 |     }
140 | 
141 |     return returnValue;
142 | }
143 | 
144 | 
145 | - (void)stopNotifier
146 | {
147 |     if (_reachabilityRef != NULL)
148 |     {
149 |         SCNetworkReachabilityUnscheduleFromRunLoop(_reachabilityRef, CFRunLoopGetCurrent(), kCFRunLoopDefaultMode);
150 |     }
151 | }
152 | 
153 | 
154 | - (void)dealloc
155 | {
156 |     [self stopNotifier];
157 |     if (_reachabilityRef != NULL)
158 |     {
159 |         CFRelease(_reachabilityRef);
160 |     }
161 | }
162 | 
163 | 
164 | #pragma mark - Network Flag Handling
165 | 
166 | - (NetworkStatus)networkStatusForFlags:(SCNetworkReachabilityFlags)flags
167 | {
168 |     PrintReachabilityFlags(flags, "networkStatusForFlags");
169 |     if ((flags & kSCNetworkReachabilityFlagsReachable) == 0)
170 |     {
171 |         // The target host is not reachable.
172 |         return NotReachable;
173 |     }
174 | 
175 |     NetworkStatus returnValue = NotReachable;
176 | 
177 |     if ((flags & kSCNetworkReachabilityFlagsConnectionRequired) == 0)
178 |     {
179 |         /*
180 |          If the target host is reachable and no connection is required then we'll assume (for now) that you're on Wi-Fi...
181 |          */
182 |         returnValue = ReachableViaWiFi;
183 |     }
184 | 
185 |     if ((((flags & kSCNetworkReachabilityFlagsConnectionOnDemand ) != 0) ||
186 |          (flags & kSCNetworkReachabilityFlagsConnectionOnTraffic) != 0))
187 |     {
188 |         /*
189 |          ... and the connection is on-demand (or on-traffic) if the calling application is using the CFSocketStream or higher APIs...
190 |          */
191 | 
192 |         if ((flags & kSCNetworkReachabilityFlagsInterventionRequired) == 0)
193 |         {
194 |             /*
195 |              ... and no [user] intervention is needed...
196 |              */
197 |             returnValue = ReachableViaWiFi;
198 |         }
199 |     }
200 | 
201 |     if ((flags & kSCNetworkReachabilityFlagsIsWWAN) == kSCNetworkReachabilityFlagsIsWWAN)
202 |     {
203 |         /*
204 |          ... but WWAN connections are OK if the calling application is using the CFNetwork APIs.
205 |          */
206 |         returnValue = ReachableViaWWAN;
207 |     }
208 | 
209 |     return returnValue;
210 | }
211 | 
212 | 
213 | - (BOOL)connectionRequired
214 | {
215 |     NSAssert(_reachabilityRef != NULL, @"connectionRequired called with NULL reachabilityRef");
216 |     SCNetworkReachabilityFlags flags;
217 | 
218 |     if (SCNetworkReachabilityGetFlags(_reachabilityRef, &flags))
219 |     {
220 |         return (flags & kSCNetworkReachabilityFlagsConnectionRequired);
221 |     }
222 | 
223 |     return NO;
224 | }
225 | 
226 | 
227 | - (NetworkStatus)currentReachabilityStatus
228 | {
229 |     NSAssert(_reachabilityRef != NULL, @"currentNetworkStatus called with NULL SCNetworkReachabilityRef");
230 |     NetworkStatus returnValue = NotReachable;
231 |     SCNetworkReachabilityFlags flags;
232 | 
233 |     if (SCNetworkReachabilityGetFlags(_reachabilityRef, &flags))
234 |     {
235 |         returnValue = [self networkStatusForFlags:flags];
236 |     }
237 | 
238 |     return returnValue;
239 | }
240 | 
241 | 
242 | @end
243 | 


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