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/*
*
* Copyright 2016, Google Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#import <Foundation/Foundation.h>
#import <SystemConfiguration/SystemConfiguration.h>
@interface GRPCReachabilityFlags : NSObject
+ (nonnull instancetype)flagsWithFlags:(SCNetworkReachabilityFlags)flags;
/**
* One accessor method to query each of the different flags. Example:
@property(nonatomic, readonly) BOOL isCell;
*/
#define GRPC_XMACRO_ITEM(methodName, FlagName) \
@property(nonatomic, readonly) BOOL methodName;
#include "GRPCReachabilityFlagNames.xmacro.h"
#undef GRPC_XMACRO_ITEM
@property(nonatomic, readonly) BOOL isHostReachable;
@end
@interface GRPCConnectivityMonitor : NSObject
+ (nullable instancetype)monitorWithHost:(nonnull NSString *)hostName;
- (nonnull instancetype)init NS_UNAVAILABLE;
/**
* Queue on which callbacks will be dispatched. Default is the main queue. Set it before calling
* handleLossWithHandler:.
*/
// TODO(jcanizales): Default to a serial background queue instead.
@property(nonatomic, strong, null_resettable) dispatch_queue_t queue;
/**
* Calls handler every time the connectivity to this instance's host is lost. If this instance is
* released before that happens, the handler won't be called.
* Only one handler is active at a time, so if this method is called again before the previous
* handler has been called, it might never be called at all (or yes, if it has already been queued).
*/
- (void)handleLossWithHandler:(nonnull void (^)())handler;
@end
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