title: OkHttp enable/disable gzip compression on requests
body: <p>I'm using <code>Retrofit</code> to manage my requests and want to make some tests to check de request size using or not using gzip.</p>
  
  <p>By default does <code>OkHttp</code> performs gzip compression to requests or it must be implemented with an <a href="https://github.com/square/okhttp/wiki/Interceptors#rewriting-requests" rel="noreferrer">interceptor</a>?</p>
  
  <p>I've added</p>
  
  <pre><code>@Headers({
          "Accept-Encoding: gzip, deflate",
          "Content-Encoding: gzip"
  })
  </code></pre>
  
  <p>or:</p>
  
  <pre><code>@Headers({
          "Content-Type: application/json;charset=utf-8",
          "Accept: application/json"
  })
  </code></pre>
  
  <p>to my requests and did not see any change on the request length.</p>