title: Generate JSON object with transactionReceipt
body: <p>I've been the past days trying to test my first in-app purchse iphone application. Unfortunately I can't find the way to talk to iTunes server to verify the transactionReceipt.</p>
  
  <p>Because it's my first try with this technology I chose to verify the receipt directly from the iPhone instead using server support. But after trying to send the POST request with a JSON onbject created using the JSON api from google code, itunes always returns a strange response (instead the "status = 0" string I wait for).</p>
  
  <p>Here's the code that I use to verify the receipt:</p>
  
  <pre><code>- (void)recordTransaction:(SKPaymentTransaction *)transaction {
      NSString *receiptStr = [[NSString alloc] initWithData:transaction.transactionReceipt encoding:NSUTF8StringEncoding];
      NSDictionary *jsonDictionary = [NSDictionary dictionaryWithObjectsAndKeys:@"algo mas",@"receipt-data",nil];
  
      NSString *jsonString = [jsonDictionary JSONRepresentation];
      NSLog(@"string to send: %@",jsonString);
  
      NSLog(@"JSON Created");
      urlData = [[NSMutableData data] retain];
  
      //NSURL *sandboxStoreURL = [[NSURL alloc] initWithString:@"https://sandbox.itunes.apple.com/verifyReceipt"];
  
      NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:@"https://sandbox.itunes.apple.com/verifyReceipt"]];
      [request setHTTPMethod:@"POST"];
      [request setHTTPBody:[jsonString dataUsingEncoding:NSUTF8StringEncoding]];
      NSLog(@"will create connection");
      [[NSURLConnection alloc] initWithRequest:request delegate:self];
  }
  </code></pre>
  
  <p>maybe I'm forgetting something in the request's headers but I think that the problem is in the method I use to create the JSON object. </p>
  
  <p>HEre's how the JSON object looks like before I add it to the HTTPBody :</p>
  
  <pre><code>    string to send: {"receipt-data":"{\n\t\"signature\" = \"AUYMbhY
  
         ...........
  
  D0gIjEuMCI7Cn0=\";\n\t\"pod\" = \"100\";\n\t\"signing-status\" = \"0\";\n}"}
  </code></pre>
  
  <p>The responses I've got: </p>
  
  <blockquote>
    <p>complete response {
        exception = "java.lang.IllegalArgumentException: Property list parsing failed while attempting to read unquoted string. No allowable characters were found. At line number: 1, column: 0.";
        status = 21002;
    }</p>
  </blockquote>
  
  <p>Thanks a lot for your guidance.</p>