title: Encoding issue on setting non UTF-8 body params in NSMutableURLRequest
body: <p>I have trying to emulate HTTP form posting, but faced with non UTF-8 symbols encoding issue.</p>
  
  <pre><code>NSDictionary *parameters = @{@"message":@"Новый день - новые тесты"};
  AFHTTPClient *httpClient = [[AFHTTPClient alloc] initWithBaseURL:url];
  NSMutableURLRequest *request = [httpClient requestWithMethod:@"POST" path:path parameters: parameters];
  </code></pre>
  
  <p>result of posting this message on site is nil - server received empty message</p>
  
  <p>Then I changed my code:</p>
  
  <pre><code>NSString *tmpBody = [NSString stringWithFormat:@"message=%@", message];             
  NSData *bodyData = [tmpBody dataUsingEncoding:NSUTF8StringEncoding];
  AFHTTPClient *httpClient = [[AFHTTPClient alloc] initWithBaseURL:url];
  NSMutableURLRequest *request = [httpClient requestWithMethod:@"POST" path:path parameters:nil];
  [request setHTTPBody:bodyData];
  </code></pre>
  
  <p>Result of posting this message on site is: "РќРѕРІС‹Р№ РґРµРЅСЊ - РЅРѕРІС‹Рµ С‚РµСЃС‚С‹"</p>
  
  <p>Then I made another one change:</p>
  
  <pre><code>NSData *bodyData = [tmpBody dataUsingEncoding:11];
  </code></pre>
  
  <p>My message sent to server as was needed after this change. But what about symbols from other encoding tables?</p>
  
  <p>The question is how to send post request, to post message in other encodings? How to post cyrillic symbols and symbols like "ěščřžýááíů" together?</p>
  
  <p>Thanks!</p>