93 lines
2.7 KiB
Objective-C
93 lines
2.7 KiB
Objective-C
/**
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* Copyright (c) 2015-present, Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the BSD-style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*/
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#import "RCTReachability.h"
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#import "RCTBridge.h"
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#import "RCTEventDispatcher.h"
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static NSString *const RCTReachabilityStateUnknown = @"unknown";
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static NSString *const RCTReachabilityStateNone = @"none";
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static NSString *const RCTReachabilityStateWifi = @"wifi";
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static NSString *const RCTReachabilityStateCell = @"cell";
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@implementation RCTReachability
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{
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SCNetworkReachabilityRef _reachability;
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NSString *_status;
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}
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@synthesize bridge = _bridge;
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RCT_EXPORT_MODULE()
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static void RCTReachabilityCallback(__unused SCNetworkReachabilityRef target, SCNetworkReachabilityFlags flags, void *info)
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{
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RCTReachability *self = (__bridge id)info;
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NSString *status = RCTReachabilityStateUnknown;
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if ((flags & kSCNetworkReachabilityFlagsReachable) == 0 ||
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(flags & kSCNetworkReachabilityFlagsConnectionRequired) != 0) {
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status = RCTReachabilityStateNone;
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}
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#if TARGET_OS_IPHONE
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else if ((flags & kSCNetworkReachabilityFlagsIsWWAN) != 0) {
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status = RCTReachabilityStateCell;
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}
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#endif
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else {
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status = RCTReachabilityStateWifi;
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}
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if (![status isEqualToString:self->_status]) {
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self->_status = status;
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[self->_bridge.eventDispatcher sendDeviceEventWithName:@"reachabilityDidChange"
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body:@{@"network_reachability": status}];
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}
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}
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#pragma mark - Lifecycle
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- (instancetype)initWithHost:(NSString *)host
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{
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if ((self = [super init])) {
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_status = RCTReachabilityStateUnknown;
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_reachability = SCNetworkReachabilityCreateWithName(kCFAllocatorDefault, [host UTF8String]);
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SCNetworkReachabilityContext context = { 0, ( __bridge void *)self, NULL, NULL, NULL };
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SCNetworkReachabilitySetCallback(_reachability, RCTReachabilityCallback, &context);
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SCNetworkReachabilityScheduleWithRunLoop(_reachability, CFRunLoopGetMain(), kCFRunLoopCommonModes);
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}
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return self;
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}
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- (instancetype)init
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{
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return [self initWithHost:@"apple.com"];
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}
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- (void)dealloc
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{
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SCNetworkReachabilityUnscheduleFromRunLoop(_reachability, CFRunLoopGetMain(), kCFRunLoopCommonModes);
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CFRelease(_reachability);
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}
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#pragma mark - Public API
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// TODO: remove error callback - not needed except by Subscribable interface
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RCT_EXPORT_METHOD(getCurrentReachability:(RCTResponseSenderBlock)getSuccess
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withErrorCallback:(__unused RCTResponseSenderBlock)getError)
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{
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getSuccess(@[@{@"network_reachability": _status}]);
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}
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@end
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