code: func (c *ServerContext) SendExecResult(r ExecResult) {
  	select {
  	case c.ExecResultCh <- r:
  	default:
  		log.Infof("blocked on sending exec result %v", r)
  	}
  }
docs: // SendExecResult sends the result of execution of the "exec" command over the
  // ExecResultCh.