Error Domain=NSURLErrorDomain Code=-1003 "A server with the specified hostname could not be found

ios objective-c nsurlconnection
shriniwas_ayyer picture shriniwas_ayyer · Dec 2, 2014 · Viewed 26.1k times · Source

I get this error when I try running the app on a device. I do not get this error when I run it on the simulator and the post request works fine. This is code snippet I have:

NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url    cachePolicy:NSURLCacheStorageNotAllowed timeoutInterval:300.f];
[request setHTTPMethod:@"POST"];

NSData* data = [paramString dataUsingEncoding:NSUTF8StringEncoding];
[request setHTTPBody:data];
[request setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Content-Type"];
NSURLConnection *connection = [[NSURLConnection alloc] initWithRequest:request delegate:self];
[connection start];

Any help is appreciated. Thanks

Answer

JoGoFo picture JoGoFo · Dec 2, 2014

This error would typically suggest a DNS related issue. Check the DNS settings on your device and confirm you can browse the internet using Safari or another browser (double check by visiting a site you have not visited before to ensure it is not cached).

If there is a url you can GET (instead of POST) on the same server, try visiting it directly in Safari on the device.

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