title: iOS Restkit needNewBodyStream called
body: <p>I perform request to server via Restkit. It is worked well, but sometimes that method is called:</p>
  
  <pre><code>- (NSInputStream *)connection:(NSURLConnection *)connection needNewBodyStream:(NSURLRequest *)request
  {
      RKResponseIgnoreDelegateIfCancelled(nil);
      RKLogWarning(@"RestKit was asked to retransmit a new body stream for a request. Possible connection error or authentication challenge?");
      return nil;
  }
  </code></pre>
  
  <p>and I dont receive response from server.</p>
  
  <p>Why is it called?</p>