Contains methods that are making networking calls and parse the response

WebServicesHelper.m

/*!
 @class WebServicesHelper
 
 @abstract
 Contains methods that are making networking calls and parse the response
 
 @discussion
 
*/

#import "WebServicesHelper.h"
#define WEB_API_URL @"http://djmobilesoftware.com/validjson.json"
typedef void (^SuccessBlock)(NSData *);
typedef void (^ErrorBlock)(NSError *);

@interface WebServicesHelper()<NSURLConnectionDelegate, NSURLConnectionDataDelegate>
    @property(nonatomic,strong) NSURLConnection * connection;
    @property (nonatomic,copy) SuccessBlock successBlock;
    @property (nonatomic,copy) ErrorBlock errorBlock;
    @property (nonatomic,strong) NSMutableData * data;
@end


@implementation WebServicesHelper
-(instancetype)init{
    if(self =[super init])
    {
        NSURL * url = [NSURL URLWithString:WEB_API_URL];
        NSURLRequest * request = [NSURLRequest requestWithURL:url];
        _connection = [[NSURLConnection alloc]initWithRequest:request delegate:self];
        _data = [NSMutableData new];
    }
    return self;
}

-(void)getDataWithCompletionBlock:(void (^)(NSData * data)) completion andErrorBlock:(void (^)(NSError *))errorBlock{
    self.successBlock = [completion copy];
    self.errorBlock   = [errorBlock copy];

    [_connection start];
    
}

#pragma mark NSURLConnection Delegate

- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error{
    NSLog(@"Error! %@",error.debugDescription);
    self.errorBlock(error);
}
-(void)connectionDidFinishLoading:(NSURLConnection *)connection{

    self.successBlock(_data);
    NSLog(@"Finish Loading Data");
}

-(void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data{
    [_data appendData:data];
    NSLog(@"Appending Data");
}

-(void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response{
    NSLog(@"Response %@",response);
}

@end