http2session settings settings callback

• settings {HTTP/2 Settings Object}
• callback {Function} Callback that is called once the session is connected or right away if the session is already connected.
  • err {Error|null}
  • settings {HTTP/2 Settings Object} The updated settings object.
  • duration {integer}

Updates the current local settings for this Http2Session and sends a new SETTINGS frame to the connected HTTP/2 peer.

Once called, the http2session.pendingSettingsAck property will be true while the session is waiting for the remote peer to acknowledge the new settings.

The new settings will not become effective until the SETTINGS acknowledgment is received and the 'localSettings' event is emitted. It is possible to send multiple SETTINGS frames while acknowledgment is still pending.