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JoyWayer
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msext/Class/Common/ASIHttpRequest/Reachability.h
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msext/Class/Common/ASIHttpRequest/Reachability.h
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/*
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File: Reachability.h
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Abstract: Basic demonstration of how to use the SystemConfiguration Reachablity APIs.
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Version: 2.0.4ddg
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*/
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/*
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Significant additions made by Andrew W. Donoho, August 11, 2009.
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This is a derived work of Apple's Reachability v2.0 class.
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The below license is the new BSD license with the OSI recommended personalizations.
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<http://www.opensource.org/licenses/bsd-license.php>
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Extensions Copyright (C) 2009 Donoho Design Group, LLC. All Rights Reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are
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met:
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* Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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* Neither the name of Andrew W. Donoho nor Donoho Design Group, L.L.C.
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may be used to endorse or promote products derived from this software
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without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY DONOHO DESIGN GROUP, L.L.C. "AS IS" AND ANY
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EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
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CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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Apple's Original License on Reachability v2.0
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Disclaimer: IMPORTANT: This Apple software is supplied to you by Apple Inc.
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("Apple") in consideration of your agreement to the following terms, and your
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use, installation, modification or redistribution of this Apple software
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constitutes acceptance of these terms. If you do not agree with these terms,
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please do not use, install, modify or redistribute this Apple software.
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In consideration of your agreement to abide by the following terms, and subject
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to these terms, Apple grants you a personal, non-exclusive license, under
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Apple's copyrights in this original Apple software (the "Apple Software"), to
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use, reproduce, modify and redistribute the Apple Software, with or without
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modifications, in source and/or binary forms; provided that if you redistribute
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the Apple Software in its entirety and without modifications, you must retain
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this notice and the following text and disclaimers in all such redistributions
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of the Apple Software.
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Neither the name, trademarks, service marks or logos of Apple Inc. may be used
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to endorse or promote products derived from the Apple Software without specific
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prior written permission from Apple. Except as expressly stated in this notice,
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no other rights or licenses, express or implied, are granted by Apple herein,
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including but not limited to any patent rights that may be infringed by your
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derivative works or by other works in which the Apple Software may be
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incorporated.
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The Apple Software is provided by Apple on an "AS IS" basis. APPLE MAKES NO
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WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED
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WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND OPERATION ALONE OR IN
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COMBINATION WITH YOUR PRODUCTS.
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IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR
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CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION, MODIFICATION AND/OR
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DISTRIBUTION OF THE APPLE SOFTWARE, HOWEVER CAUSED AND WHETHER UNDER THEORY OF
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CONTRACT, TORT (INCLUDING NEGLIGENCE), STRICT LIABILITY OR OTHERWISE, EVEN IF
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APPLE HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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Copyright (C) 2009 Apple Inc. All Rights Reserved.
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*/
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/*
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DDG extensions include:
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Each reachability object now has a copy of the key used to store it in a
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dictionary. This allows each observer to quickly determine if the event is
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important to them.
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-currentReachabilityStatus also has a significantly different decision criteria than
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Apple's code.
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A multiple convenience test methods have been added.
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*/
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#import <Foundation/Foundation.h>
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#import <SystemConfiguration/SystemConfiguration.h>
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#import <netinet/in.h>
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#define USE_DDG_EXTENSIONS 1 // Use DDG's Extensions to test network criteria.
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// Since NSAssert and NSCAssert are used in this code,
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// I recommend you set NS_BLOCK_ASSERTIONS=1 in the release versions of your projects.
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enum {
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// DDG NetworkStatus Constant Names.
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kNotReachable = 0, // Apple's code depends upon 'NotReachable' being the same value as 'NO'.
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kReachableViaWWAN, // Switched order from Apple's enum. WWAN is active before WiFi.
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kReachableViaWiFi
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};
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typedef uint32_t NetworkStatus;
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enum {
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// Apple NetworkStatus Constant Names.
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NotReachable = kNotReachable,
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ReachableViaWiFi = kReachableViaWiFi,
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ReachableViaWWAN = kReachableViaWWAN
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};
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extern NSString *const kInternetConnection;
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extern NSString *const kLocalWiFiConnection;
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extern NSString *const kReachabilityChangedNotification;
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@interface Reachability: NSObject {
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@private
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NSString *key_;
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SCNetworkReachabilityRef reachabilityRef;
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}
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@property (copy) NSString *key; // Atomic because network operations are asynchronous.
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// Designated Initializer.
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- (Reachability *) initWithReachabilityRef: (SCNetworkReachabilityRef) ref;
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// Use to check the reachability of a particular host name.
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+ (Reachability *) reachabilityWithHostName: (NSString*) hostName;
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// Use to check the reachability of a particular IP address.
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+ (Reachability *) reachabilityWithAddress: (const struct sockaddr_in*) hostAddress;
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// Use to check whether the default route is available.
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// Should be used to, at minimum, establish network connectivity.
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+ (Reachability *) reachabilityForInternetConnection;
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// Use to check whether a local wifi connection is available.
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+ (Reachability *) reachabilityForLocalWiFi;
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//Start listening for reachability notifications on the current run loop.
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- (BOOL) startNotifier;
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- (void) stopNotifier;
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// Comparison routines to enable choosing actions in a notification.
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- (BOOL) isEqual: (Reachability *) r;
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// These are the status tests.
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- (NetworkStatus) currentReachabilityStatus;
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// The main direct test of reachability.
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- (BOOL) isReachable;
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// WWAN may be available, but not active until a connection has been established.
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// WiFi may require a connection for VPN on Demand.
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- (BOOL) isConnectionRequired; // Identical DDG variant.
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- (BOOL) connectionRequired; // Apple's routine.
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// Dynamic, on demand connection?
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- (BOOL) isConnectionOnDemand;
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// Is user intervention required?
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- (BOOL) isInterventionRequired;
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// Routines for specific connection testing by your app.
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- (BOOL) isReachableViaWWAN;
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- (BOOL) isReachableViaWiFi;
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- (SCNetworkReachabilityFlags) reachabilityFlags;
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@end
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