HTTP SEND SMS API Using iOS

//Create Objects
NSMutableData * responseData;
NSURLConnection * connection;



// In your viewDidLoad method add this lines
-(void)viewDidLoad
{
    [super viewDidLoad]; 
    //Your authentication key
    NSString * authkey = @"YourAuthKey";
    //Multiple mobiles numbers separated by comma
    NSString * mobiles = @"9999999"; 
    //Sender ID,While using route4 sender id should be 6 characters long.
    NSString * senderId = @"102234";
    //Your message to send, Add URL encoding here.
    NSString * message = @"Test message";
    //define route
    NSString * route = @"default";
    

    // Prepare your url to send sms with this parameters.
    NSString * url = [[NSString stringWithFormat:@"https://control.msg91.com/api/sendhttp.php?authkey=%@&mobiles=%@&message=%@&sender=%@&route=%@", authkey, mobiles, message, senderId, route] stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
    NSURLRequest * request = [NSURLRequest requestWithURL:[NSURL URLWithString:url]];
    connection = [[NSURLConnection alloc] initWithRequest:request delegate:self];
}


// implement URLConnection Delegate Methods as follow
-(void) connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response
{
	//Get response data
    responseData = [NSMutableData data];
} 


-(void) connection:(NSURLConnection *)connection didReceiveData:(NSData *)data
{
	[responseData appendData:data];
}


-(void) connection:(NSURLConnection *)connection didFailWithError:(NSError *)error
{
    UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Error" message:error.localizedDescription delegate:self cancelButtonTitle:nil otherButtonTitles:@"OK", nil];
    [alert show];
}


-(void) connectionDidFinishLoading:(NSURLConnection *)connection
{
    // Get response data in NSString.
    NSString * responceStr = [[NSString alloc] initWithData:responseData encoding:NSUTF8StringEncoding];
}