How to check whether internet is active (checking both network availability & webpage accessibility) in iOS?

Question

I am currently working in an iOS project where I need to check whether my phone is connected to the internet (mobile data/wifi) or not. I'm using reachability class which only check network connection availability but suppose a scenario where there is no balance in my phone. In that case I wouldn't able to access internet but still reachability shows me that internet is reachable via mobile network as data connection is on although I can't access the page.

How can I resolve the issue?

Possible duplicate of [How to check for an active Internet connection on iOS or OSX?](http://stackoverflow.com/questions/1083701/how-to-check-for-an-active-internet-connection-on-ios-or-osx) — jxmorris12, Nov 27 '16 at 05:55

score 3 · Accepted Answer · answered Nov 27 '16 at 07:42

you can check using connection:didReceiveResponse:

        NSString *urlString=@"yourUrl";
        NSURL *url=[NSURL URLWithString:urlString];
        NSURLRequest *request=[NSURLRequest requestWithURL:url];
        NSURLConnection *connection=[NSURLConnection connectionWithRequest:request delegate:self];
        [connection start];

        -(void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response
        {
        NSLog(@"%@",response);
        [connection cancel];
        NSHTTPURLResponse* httpResponse = (NSHTTPURLResponse*)response;
        int code = (int)[httpResponse statusCode];
        if (code == 200) {
            NSLog(@"File exists");
        }
        else if(code == 404)
        {
            NSLog(@"File not exist");
        }
        }
        -(void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error
        {
        NSLog(@"File not exist");
        }

I have checked keeping my mobile data on even though there is no balance .So it should print "File not exist" . It prints but take long time . How can I reduce the response time or set time-interval like 5 sec. & if that period is over then how I can check that? — Khalid Rahman, Nov 27 '16 at 09:29
When you create NSURLRequest you can provide timeoutInterval . NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:link] cachePolicy:NSURLRequestUseProtocolCachePolicy timeoutInterval:5.0]; — Sangram Shivankar, Nov 27 '16 at 10:39

score 1 · Answer 2 · answered Nov 27 '16 at 05:58

Another example would be if you're improperly connected to a Wifi network - your phone has a good connection but no permission to access any pages on the Internet.

In this case, the only method of detection would be to try and send a web request to a reliable site (say www.google.com). If your request to this source times out after a set amount of time (say five seconds) then you can safely conclude that the phone has connectivity issues.

score 0 · Answer 3 · edited May 23 '17 at 10:30

0

You can check the internet connection

NSURL *scriptUrl = [NSURL URLWithString:@"http://www.google.com/"];

NSData *data = [NSData dataWithContentsOfURL:scriptUrl];
//Manual timeout of 20 seconds
[NSThread sleepForTimeInterval: 20];
if (data)
    NSLog(@"Device is connected to the Internet");
else
    NSLog(@"Device is not connected to the Internet");

Refer to this link

edited May 23 '17 at 10:30

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answered Nov 27 '16 at 07:08

Md. Ibrahim Hassan

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How to check whether internet is active (checking both network availability & webpage accessibility) in iOS?

3 Answers3