Getting raw data in the Google App Engine Python application API

Question

I am trying to get the original data sent as a message to the Google App engine using self.request.get ('content'), but in vain. It returns empty. I am sure that the data is being sent from the client, because I checked with another simple server code.

Any idea what I'm doing wrong? I am using the following client-side code generating a POST call (objective-c / cocoa -touch)

NSMutableArray *array = [[NSMutableArray alloc] init];
    NSMutableDictionary *diction = [[NSMutableDictionary alloc] init];
    NSString *tempcurrentQuestion = [[NSString alloc] initWithFormat:@"%d", (questionNo+1)];
    NSString *tempansweredOption = [[NSString alloc] initWithFormat:@"%d", (answeredOption)];       

    [diction setValue:tempcurrentQuestion forKey:@"questionNo"];
    [diction setValue:tempansweredOption forKey:@"answeredOption"];
    [diction setValue:country forKey:@"country"];

    [array addObject:diction];
    NSString *post1 = [[CJSONSerializer serializer] serializeObject:array];


    NSString *post = [NSString stringWithFormat:@"json=%@", post1];
    NSData *postData = [post dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES];  
    NSLog(@"Length: %d", [postData length]);

    NSString *postLength = [NSString stringWithFormat:@"%d", [postData length]];  

    NSMutableURLRequest *request = [[[NSMutableURLRequest alloc] init] autorelease];  
    [request setURL:[NSURL URLWithString:@"http://localhost:8080/userResult/"]];  
    [request setHTTPMethod:@"POST"];  
    [request setValue:postLength forHTTPHeaderField:@"Content-Length"];  
    [request setValue:@"application/json" forHTTPHeaderField:@"Content-Type"];  
    [request setHTTPBody:postData];
    questionsFlag = FALSE;
    [[NSURLConnection alloc] initWithRequest:request delegate:self];

Server Side Code:

class userResult(webapp.RequestHandler):
def __init__(self):
    self.qNo = 1
def post(self):
    return self.request.get('json')

Answer 1

POST , application/x-www-form-urlencoded, , . , self.request.body, Wooble.

HTML-, enctype <form>, , . - enctype="application/octet-stream".

Answer 2

self.request.get('content') , 'content'. , self.request.body.