Question

i am succesfully getting data from my server. and after getting it i send the data to the function to parse;

- (void)readIn:(NSMutableData *)s {
    NSLog(@"Reading in the following:");
    NSString * prints = [[NSString alloc] initWithData:s  encoding:NSUTF8StringEncoding];
    NSLog(@"%@", prints);

    NSError *error = nil;
    NSData *jsonData = [[NSData alloc] initWithData:s];

    if (jsonData) {

        id jsonObjects = [NSJSONSerialization JSONObjectWithData:jsonData options:NSJSONReadingMutableContainers error:&error];

        if ([jsonObjects isKindOfClass: [NSArray class]])
            NSLog(@"yes we got an Array");
        else if ([jsonObjects isKindOfClass: [NSDictionary class]])
             NSLog(@"yes we got an dictionary");
        else
              NSLog(@"neither array nor dictionary!");



        if (error) {
            NSLog(@"error is %@", [error localizedDescription]);
            return;
        }

        NSArray *keys = [jsonObjects allKeys];
        for (NSString *key in keys) {
            NSLog(@"%@ is %@",key, [jsonObjects objectForKey:key]);
        }

    } else {

        // Handle Error
    } 
    }

now my print on console is:

    2012-08-17 13:59:57.667 TaraftarlikOyunu[1157:c07] Reading in the following:
2012-08-17 13:59:57.667 TaraftarlikOyunu[1157:c07] {"uID":"5878341","tm":"fb","hh":122,"pt":75,"coin":500,"ll":1,"qlevel":1,"coect":true,"potWeekly":{"pts":75,"intval":604800000},"acent":{"chamunt":0},"mes":[]}
2012-08-17 13:59:57.668 TaraftarlikOyunu[1157:c07] neither array nor dictionary!
2012-08-17 13:59:57.670 TaraftarlikOyunu[1157:c07] error is The operation couldn’t be completed. (Cocoa error 3840.)

it seems legal json object to me. where am i doing wrong?

i am getting data from the server with nsstream; and here is my code to get data:

case NSStreamEventHasBytesAvailable: {
            if(stream == inputStream) {
                NSLog(@"inputStream is ready.");

                uint8_t buf[1024];
                unsigned int len = 0;

                len = [inputStream read:buf maxLength:1024];
            NSLog(@"length %i", len);
                if(len > 0) {

                    NSMutableData* data=[[NSMutableData alloc] initWithLength:0];
                    [data appendBytes: (const void *)buf length:len];
                    [self readIn:data];

                }
            }
            break;
        }

Answer 1

problem is that, json string i get is coming with null termination at the end and when i try to deserialize it it can not be converted to NSDictionary or NSArray. making a little change on the code makes everything perfect. the true code should be like that

case NSStreamEventHasBytesAvailable: {
        if(stream == inputStream) {

            NSLog(@"inputStream is ready.");

            uint8_t buf[1024];
            unsigned int len = 0;

            len = [inputStream read:buf maxLength:1024];
            NSLog(@"length %i", len);
            if(len > 0) {

                datum =[[NSMutableData alloc] initWithLength:0];

                [datum appendBytes: (const void *)buf length:len-1];




                NSDictionary * jsondict = [NSJSONSerialization JSONObjectWithData:datum options:NSUTF8StringEncoding error:nil];

                NSLog(@"is valid json object %d",[NSJSONSerialization isValidJSONObject:jsondict]);


                [self readIn:datum];
                }
            }
             else {
                NSLog(@"no buffer!");
            }
            break;
            }


    default: {
        NSLog(@"Stream is sending an Event: %i", event);

        break;
    }
}

only difference from the other one is i threw the last byte and it became valid json dictionary.
thanks for the people who are interested in my question.