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Network Reachability check before uploading.
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| /* | ||
| File: Reachability.h | ||
| Abstract: Basic demonstration of how to use the SystemConfiguration Reachablity APIs. | ||
| Version: 3.5 | ||
| Disclaimer: IMPORTANT: This Apple software is supplied to you by Apple | ||
| Inc. ("Apple") in consideration of your agreement to the following | ||
| terms, and your use, installation, modification or redistribution of | ||
| this Apple software constitutes acceptance of these terms. If you do | ||
| not agree with these terms, please do not use, install, modify or | ||
| redistribute this Apple software. | ||
| In consideration of your agreement to abide by the following terms, and | ||
| subject to these terms, Apple grants you a personal, non-exclusive | ||
| license, under Apple's copyrights in this original Apple software (the | ||
| "Apple Software"), to use, reproduce, modify and redistribute the Apple | ||
| Software, with or without modifications, in source and/or binary forms; | ||
| provided that if you redistribute the Apple Software in its entirety and | ||
| without modifications, you must retain this notice and the following | ||
| text and disclaimers in all such redistributions of the Apple Software. | ||
| Neither the name, trademarks, service marks or logos of Apple Inc. may | ||
| be used to endorse or promote products derived from the Apple Software | ||
| without specific prior written permission from Apple. Except as | ||
| expressly stated in this notice, no other rights or licenses, express or | ||
| implied, are granted by Apple herein, including but not limited to any | ||
| patent rights that may be infringed by your derivative works or by other | ||
| works in which the Apple Software may be incorporated. | ||
| The Apple Software is provided by Apple on an "AS IS" basis. APPLE | ||
| MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION | ||
| THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS | ||
| FOR A PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND | ||
| OPERATION ALONE OR IN COMBINATION WITH YOUR PRODUCTS. | ||
| IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL | ||
| OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | ||
| SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | ||
| INTERRUPTION) ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION, | ||
| MODIFICATION AND/OR DISTRIBUTION OF THE APPLE SOFTWARE, HOWEVER CAUSED | ||
| AND WHETHER UNDER THEORY OF CONTRACT, TORT (INCLUDING NEGLIGENCE), | ||
| STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN ADVISED OF THE | ||
| POSSIBILITY OF SUCH DAMAGE. | ||
| Copyright (C) 2014 Apple Inc. All Rights Reserved. | ||
| */ | ||
|
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| #import <Foundation/Foundation.h> | ||
| #import <SystemConfiguration/SystemConfiguration.h> | ||
| #import <netinet/in.h> | ||
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| typedef enum : NSInteger { | ||
| NotReachable = 0, | ||
| ReachableViaWiFi, | ||
| ReachableViaWWAN | ||
| } NetworkStatus; | ||
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| extern NSString *kReachabilityChangedNotification; | ||
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| @interface Reachability : NSObject | ||
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| /*! | ||
| * Use to check the reachability of a given host name. | ||
| */ | ||
| + (instancetype)reachabilityWithHostName:(NSString *)hostName; | ||
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| /*! | ||
| * Use to check the reachability of a given IP address. | ||
| */ | ||
| + (instancetype)reachabilityWithAddress:(const struct sockaddr_in *)hostAddress; | ||
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| /*! | ||
| * Checks whether the default route is available. Should be used by applications that do not connect to a particular host. | ||
| */ | ||
| + (instancetype)reachabilityForInternetConnection; | ||
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| /*! | ||
| * Checks whether a local WiFi connection is available. | ||
| */ | ||
| + (instancetype)reachabilityForLocalWiFi; | ||
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| /*! | ||
| * Start listening for reachability notifications on the current run loop. | ||
| */ | ||
| - (BOOL)startNotifier; | ||
| - (void)stopNotifier; | ||
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| - (NetworkStatus)currentReachabilityStatus; | ||
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| /*! | ||
| * WWAN may be available, but not active until a connection has been established. WiFi may require a connection for VPN on Demand. | ||
| */ | ||
| - (BOOL)connectionRequired; | ||
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| @end |
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