Error Domain=NSURLErrorDomain - ios

Question

I am sorry for this question. I am new to iOS.
I am working on xcode 7.1. I am calling a POST call on my Local server but I am getting this error. and I am not sure why. I have been trying and searching for couple of days now, but i couldn't find anything relevant. this is my code
NSString *myUrlString = [NSString stringWithFormat:#"%#%#/login",link,Entry ];
//create string for parameters that we need to send in the HTTP POST body
NSLog(#"My Url = %#",myUrlString);
NSMutableDictionary* postRequestDictionary = [[NSMutableDictionary alloc] init];
postRequestDictionary[#"email" ]= EmailIDTF.text;
postRequestDictionary[#"password" ]= PasswordTF.text;
NSLog(#"body = %#",postRequestDictionary);
NSData *json;
NSString *jsonString;
NSError *error;
// Dictionary convertable to JSON ?
if ([NSJSONSerialization isValidJSONObject:postRequestDictionary])
{
// Serialize the dictionary
json = [NSJSONSerialization dataWithJSONObject:postRequestDictionary options:NSJSONWritingPrettyPrinted error:&error];
// If no errors, let's view the JSON
if (json != nil && error == nil)
{
jsonString = [[NSString alloc] initWithData:json encoding:NSUTF8StringEncoding];
NSLog(#"JSON: %#", jsonString);
}
}
//create a mutable HTTP request
NSMutableURLRequest *urlRequest = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:[myUrlString stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]]
cachePolicy:NSURLRequestReloadIgnoringLocalCacheData
timeoutInterval:60.0]; //sets the receiver’s timeout interval, in seconds
[urlRequest setTimeoutInterval:30.0f];
//sets the receiver’s HTTP request method
[urlRequest setHTTPMethod:#"POST"];
[urlRequest addValue:#"application/json" forHTTPHeaderField:#"Content-type"];
NSString *params = [NSString stringWithFormat:#"%#",jsonString];
NSLog(#"param = %#",params);
//sets the request body of the receiver to the specified data.
[urlRequest setHTTPBody:[params dataUsingEncoding:NSUTF8StringEncoding]];
//allocate a new operation queue
NSOperationQueue *queue = [[NSOperationQueue alloc] init];
//Loads the data for a URL request and executes a handler block on an
//operation queue when the request completes or fails.
[NSURLConnection
sendAsynchronousRequest:urlRequest
queue:queue
completionHandler:^(NSURLResponse *response,
NSData *data,
NSError *error) {
if ([data length] >0 && error == nil){
//process the JSON response
//use the main queue so that we can interact with the screen
dispatch_async(dispatch_get_main_queue(), ^{
[self parseResponse1:data];
});
}
else if ([data length] == 0 && error == nil){
NSLog(#"Empty Response, not sure why?");
}
else if (error != nil){
dispatch_async(dispatch_get_main_queue(), ^{
NSLog(#"Not again, what is the error = %#", error);
UIAlertView *alert = [[UIAlertView alloc]initWithTitle:#"Alert!" message:#"Please check that you are connected to internet." delegate:self cancelButtonTitle:#"I got it." otherButtonTitles: nil];
// spinnerview.hidden=YES;
[alert show];
});
}
}];
But all i am getting is this error
Error Domain=NSURLErrorDomain Code=-1012 "(null)" UserInfo={NSErrorFailingURLKey=http://xyz/login, NSErrorFailingURLStringKey=http://xyz/login, NSUnderlyingError=0x165a0f80 {Error Domain=kCFErrorDomainCFNetwork Code=-1012 "(null)" UserInfo={_kCFURLErrorAuthFailedResponseKey={url = http://xyz/login}}}}
and thing is that why is it giving "(null)"??
Please help me guys. Thanks in advance. 🙏

Answer 1

try after adding this key in your info.plist file:
<key>NSAppTransportSecurity</key>
<dict>
<key>NSAllowsArbitraryLoads</key>
<true/>
</dict>
Hope this helps.

Answer 2

pragma mark call web service with this code
NSString *myUrlString = [NSString stringWithFormat:#"%#%#/login",link,Entry ];
NSMutableDictionary* postRequestDictionary = [[NSMutableDictionary alloc] init];
postRequestDictionary[#"email" ]= EmailIDTF.text;
postRequestDictionary[#"password" ]= PasswordTF.text;
NSString *mystring=[self returnMeParameterString:postRequestDictionary];
NSURL *url = [NSURL URLWithString:myUrlString];
NSData *postData = [mystring dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES];
NSString *postLength = [NSString stringWithFormat:#"%lu", (unsigned long)[mystring length]];
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] initWithURL:url];
[request setHTTPMethod:#"POST"];
[request setValue:postLength forHTTPHeaderField:#"Content-Length"];
[request setHTTPBody:postData];
[NSURLConnection sendAsynchronousRequest:request queue:[NSOperationQueue mainQueue] completionHandler:^(NSURLResponse response, NSData data, NSError *connectionError) {
if(connectionError)
{
//error
}
else
{
//success
}
}];
pragma mark convert Dictionary to string
-(NSString*)returnMeParameterString:(NSDictionary *)params{
NSMutableString *paramstring = [[NSMutableString alloc] init];
NSMutableArray *keyArray = [[NSMutableArray alloc] init];
NSMutableArray *valueArray = [[NSMutableArray alloc] init];
for( NSString *aKey in [params allKeys] )
{
[keyArray addObject:aKey];
}
for( NSString *aValue in [params allValues] )
{
[valueArray addObject:aValue];
}
for (int k=0; k< keyArray.count; k++)
{
NSString *tempString;
if(k==0)
{
tempString = [NSString stringWithFormat:#"%#=%#",[keyArray objectAtIndex:k],[valueArray objectAtIndex:k]];
}
else
{
tempString = [NSString stringWithFormat:#"&%#=%#",[keyArray objectAtIndex:k],[valueArray objectAtIndex:k]];
}
[paramstring appendString:tempString];
}
return paramstring;
}