title: What is kCFErrorDomainCFNetwork?
body: <p>In the last question I posted, I have been getting a NSURLErrorDomain when I append a JSON string into my URL using the GET method. Now, someone pointed out that I should percent encode the whole JSON string so that it will be URL compatible. When I did that however, I received another kind of error: kCFErrorDomainCFNetwork code 303. I researched about this and unfortunately I couldn't find a suitable explanation for this error. The closest thing I understand about this error is that it seems like I'm sending huge memory to the server. </p>
  
  <p>Can anyone give me a nice and simple explanation about this? </p>