rest

NSString *requestStr = @"1.3.6.1.4.1.18397.10.10.700206911201504131124113";
NSString *jsonRequest = [NSString stringWithFormat:
                            @"{\"estudio\":\"%@\"}",requestStr
                        ];
NSLog(@"Request: %@", jsonRequest);

NSURL *url = [NSURL URLWithString:@"http://54.207.80.28/api-lebox/cita/prueba_rest"];

NSMutableURLRequest *request = [[NSMutableURLRequest alloc] initWithURL:url];
NSData *requestData = [NSData dataWithBytes:[jsonRequest UTF8String] length:strlen([jsonRequest UTF8String])];

[request setHTTPMethod:@"POST"];
[request setValue:@"application/json" forHTTPHeaderField:@"Accept"];
[request setValue:@"application/json" forHTTPHeaderField:@"Content-Type"];
[request setValue:[NSString stringWithFormat:@"%d", [requestData length]] forHTTPHeaderField:@"Content-Length"];
[request setHTTPBody: requestData];

NSURLConnection *connection = [NSURLConnection connectionWithRequest:request delegate:self];