title: How can I allow one-way video communications with Agora?
body: <p>In an Agora two-person communication, how can I allow only one participant to receive the video from the other user?</p>
  <p>I can implement this with the audio without a problem. But with video, I do not receive any event when the remote user stops sending video for example (onRemoteVideoStateChanged not fired).</p>
  <p>I tried setting up the client role to broadcaster on both sides but the one-way video still does not work:</p>
  <pre><code>mRtcEngine.setClientRole(Constants.CLIENT_ROLE_BROADCASTER); 
  </code></pre>
  <p>Thanks</p>