RCPR_Example

    UIImage *image = [UIImage imageNamed:@"a"];
    NSData *imgData = UIImageJPEGRepresentation(image, 1.0);
    
    NSString *url = @"http://120.24.247.190/RCPR/detect_landmark";
    
    AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
    
    //Very important!!!
    manager.responseSerializer.acceptableContentTypes = [[NSSet alloc] initWithObjects:@"text/html", nil];
    
    [manager POST:url parameters:nil constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {
        
        //Construct image data
        [formData appendPartWithFileData:imgData name:@"img" fileName:@"avatar_real_small.jpg" mimeType:@"image/jpg"];
        
    } success:^(AFHTTPRequestOperation *operation, id responseObject) {
        //Success 
        //responseObject is Json Dictionary
    } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
        //Fail...
    }];