101 lines
2.8 KiB
Objective-C
101 lines
2.8 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 "RCTNetInfo.h"
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#import <React/RCTAssert.h>
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#import <React/RCTBridge.h>
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#import <React/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 RCTNetInfo
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{
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SCNetworkReachabilityRef _reachability;
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NSString *_status;
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NSString *_host;
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}
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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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RCTNetInfo *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 sendEventWithName:@"networkStatusDidChange" body:@{@"network_info": 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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RCTAssertParam(host);
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RCTAssert(![host hasPrefix:@"http"], @"Host value should just contain the domain, not the URL scheme.");
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if ((self = [self init])) {
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_host = [host copy];
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}
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return self;
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}
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- (NSArray<NSString *> *)supportedEvents
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{
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return @[@"networkStatusDidChange"];
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}
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- (void)startObserving
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{
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_status = RCTReachabilityStateUnknown;
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_reachability = SCNetworkReachabilityCreateWithName(kCFAllocatorDefault, _host.UTF8String ?: "apple.com");
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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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- (void)stopObserving
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{
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if (_reachability) {
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SCNetworkReachabilityUnscheduleFromRunLoop(_reachability, CFRunLoopGetMain(), kCFRunLoopCommonModes);
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CFRelease(_reachability);
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}
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}
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#pragma mark - Public API
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RCT_EXPORT_METHOD(getCurrentConnectivity:(RCTPromiseResolveBlock)resolve
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reject:(__unused RCTPromiseRejectBlock)reject)
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{
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resolve(@{@"network_info": _status ?: RCTReachabilityStateUnknown});
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}
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@end
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