Why can't this iOS app access the network?

Question

My (Unity) app complains that the my iPod does not have network connectivity while the device has full wi-fi connectivity (as evidenced by every other app, including Safari).

This isn't just one API point - all of them (Facebook, StoreKit, etc) claim that the network is not available.

This message is periodically sent to the console from my app:

<Error>: Could not successfully update network info during initialization.

which may (I think) be coming from CoreTelephony.

Any idea what is causing this? I get it in debug and adhoc builds. I do not have any Restrictions (from Settings) active on the device.

The device is iOS 6 and the base sdk is iOS 5.

Have you checked in settings -> devTools -> Network link coordiner that you don't have 100% loss internet connection? — Baxter Lopez, Mar 08 '14 at 05:01
Hi, did you find out what the problem was? @Raptor, what if he is using `ASIHTTP` or some other networking library(e.g. `AFNetworking`)? — Martin, Jun 10 '15 at 07:41
Dave did you get the solution for it ? I am facing the same issue. — lifemoveson, Dec 15 '15 at 19:59

score 10 · Answer 1 · answered Jun 30 '17 at 10:49

10

The "Could not successfully update network info during initialization." log is shown every time you initialize the CTTelephonyNetworkInfo in a device without SIM card, (iPod touch or iPad without 3G).

If it's very annoying, you can just initialize it once and do your network checks against that instance.

answered Jun 30 '17 at 10:49

rockdaswift

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1

Oh! you rocks, daswift. That's exactly why I was getting this anoying message on simulator. Thanks! – Martin Oct 03 '17 at 14:23
I tried set location in simulator and CTTelephonyNetworkInfo initialization in appDelegate.m but not working, could you post the code? @rockdaswift – Yao Li Nov 30 '17 at 00:33
@YaoLi you just need to do this once (if needed): let networkInfo = CTTelephonyNetworkInfo() Then pass the object around, every time you do that in the simulator or in a device without SIM card you will get that warning. – rockdaswift Nov 30 '17 at 09:34
@rockdaswift I don't use CTTelephonyNetworkInfo directly, I only use AFNetworking 3.1.0 to make API request and AFNetworking version 2.0+ does work. – Yao Li Dec 01 '17 at 06:09
It's weird, AFNetworking doesn't use CTTelephonyNetworkInfo, maybe it's in another dependency. – rockdaswift Dec 01 '17 at 11:24

score 1 · Answer 2 · answered Apr 11 '14 at 11:13

1

Check the developer tools to check if you have accidentally turned on 100% loss internet. It should be in the debug menu.

answered Apr 11 '14 at 11:13

Schemetrical

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I have same problem and I couldnt solve this. Network Link Conditioner is not enable in Debug menu – husmen73 Apr 06 '17 at 11:59

score 0 · Answer 3 · answered Dec 04 '17 at 19:21

I tried set location in simulator and CTTelephonyNetworkInfo initialization in appDelegate.m but not working. I fixed it by define a new class APIAgent.m:

+ (APIAgent *)manager {
    static APIAgent *_manager = nil;
    static dispatch_once_t onceToken;
    dispatch_once(&onceToken, ^{
        _manager = [[APIAgent alloc] initWithBaseURL:[NSURL URLWithString:API_URL]];
        _manager.responseSerializer = [AFJSONResponseSerializer serializer];
        NSMutableIndexSet* codes = [NSMutableIndexSet indexSetWithIndexesInRange: NSMakeRange(200, 100)];
        [codes addIndex: 400];
        [codes addIndex: 401];
        [codes addIndex: 404];
        [codes addIndex: 409];
        [codes addIndex: 500];
        _manager.responseSerializer.acceptableStatusCodes = codes;
    });

    return _manager;
}

- (id)initWithBaseURL:(NSURL *)url {
    self = [super initWithBaseURL:url];
    if (!self) {
        return nil;
    }

    [[AFNetworkActivityIndicatorManager sharedManager] setEnabled:YES];

    [self setHeaders];

    return self;
}

- (NSURLSessionDataTask *)GET:(NSString *)URLString parameters:(id)parameters progress:(void (^)(NSProgress *uploadProgress))uploadProgress
                     complete:(void (^)(NSURLSessionDataTask *task, id responseObject, NSError *error))complete {
    return [self GET:URLString parameters:parameters progress:nil success:^(NSURLSessionDataTask *task, id responseObject) {
        if (complete) {
            complete(task, responseObject, nil);
        }
    } failure:^(NSURLSessionDataTask *task, NSError *error) {
        if (complete) {
            complete(task, nil, error);
        }
    }];
}

- (NSURLSessionDataTask *)POST:(NSString *)URLString parameters:(id)parameters complete:(void (^)(NSURLSessionDataTask *task, id responseObject, NSError *error))complete {
    return [self POST:URLString parameters:parameters progress:nil success:^(NSURLSessionDataTask *task, id responseObject) {
        if (complete) {
            complete(task, responseObject, nil);
        }
    } failure:^(NSURLSessionDataTask *task, NSError *error) {
        if (complete) {
            complete(task, nil, error);
        }
    }];
}


- (NSURLSessionDataTask *)GET:(NSString *)URLString parameters:(id)parameters progress:(void (^)(NSProgress *uploadProgress))uploadProgress
                      success:(void (^)(NSURLSessionDataTask *task, id responseObject))success failure:(void (^)(NSURLSessionDataTask *task, NSError *error))failure {
    self.securityPolicy.allowInvalidCertificates = YES; // self signed certificate
    self.securityPolicy.validatesDomainName = NO;
    return [super GET:URLString parameters:parameters progress:nil success:success failure:failure];
}

- (NSURLSessionDataTask *)POST:(NSString *)URLString
                    parameters:(id)parameters
                      progress:(void (^)(NSProgress *uploadProgress))uploadProgress
                       success:(void (^)(NSURLSessionDataTask *task, id responseObject))success
                       failure:(void (^)(NSURLSessionDataTask *task, NSError *error))failure {
    NSMutableDictionary *params = [parameters mutableCopy];

    self.securityPolicy.allowInvalidCertificates = YES; // self signed certificate
    self.securityPolicy.validatesDomainName = NO;
    return [super POST:URLString parameters:params progress:nil success:success failure:failure];
}

- (NSURLSessionDataTask *)POST:(NSString *)URLString
                    parameters:(id)parameters constructingBodyWithBlock:(void (^)(id<AFMultipartFormData>))block
                      progress:(void (^)(NSProgress *uploadProgress))uploadProgress
                       success:(void (^)(NSURLSessionDataTask *, id))success failure:(void (^)(NSURLSessionDataTask *, NSError *))failure {
    NSMutableDictionary *params = [parameters mutableCopy];

    if (parameters == nil) {
        params = [[NSMutableDictionary alloc] init];
    } else {
        if (parameters[@"postId"] != nil) {
            params[@"postId"] = parameters[@"postId"];
        }
    }

    self.securityPolicy.allowInvalidCertificates = YES; // http://stackoverflow.com/questions/27808249/problems-with-ssl-pinning-and-afnetworking-2-5-0-nsurlerrordomain-error-1012
    self.securityPolicy.validatesDomainName = NO;
    return [super POST:URLString parameters:params constructingBodyWithBlock:block progress:nil success:success failure:failure];

}

- (void)setHeaders {
    NSString *time = [NSString stringWithFormat:@"%f", [[[NSDate alloc] init] timeIntervalSince1970]];
    AFHTTPRequestSerializer * serializer = self.requestSerializer;
    [serializer setValue:time forHTTPHeaderField:@"X-API-TIME"];
    [serializer setValue:[UIDevice currentDevice].identifierForVendor.UUIDString forHTTPHeaderField:@"X-UUID"];

    [serializer setValue:@"application/json" forHTTPHeaderField:@"Accept"];

    NSString *preferredLang = [NSLocale preferredLanguages].firstObject;

    [serializer setValue:preferredLang forHTTPHeaderField:@"X-USER-LANGUAGE"];
}

The above code could be used as a utility class to make network request. — Yao Li, Dec 07 '17 at 18:55

Why can't this iOS app access the network?

3 Answers3

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