| 123456789101112131415161718192021222324252627282930313233343536373839404142434445464748 | /* * * Copyright 2016 gRPC authors. * * Licensed 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 <Foundation/Foundation.h>#import <SystemConfiguration/SystemConfiguration.h>typedef NS_ENUM(NSInteger, GRPCConnectivityStatus) {  GRPCConnectivityUnknown = 0,  GRPCConnectivityNoNetwork = 1,  GRPCConnectivityCellular = 2,  GRPCConnectivityWiFi = 3,};extern NSString * _Nonnull kGRPCConnectivityNotification;// This interface monitors OS reachability interface for any network status// change. Parties interested in these events should register themselves as// observer.@interface GRPCConnectivityMonitor : NSObject- (nonnull instancetype)init NS_UNAVAILABLE;// Register an object as observer of network status change. \a observer// must have a notification method with one parameter of type// (NSNotification *) and should pass it to parameter \a selector. The// parameter of this notification method is not used for now.+ (void)registerObserver:(_Nonnull id)observer                selector:(_Nonnull SEL)selector;// Ungegister an object from observers of network status change.+ (void)unregisterObserver:(_Nonnull id)observer;@end
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