message <span class="message">RequestRetry</span>
{
  required <span class="number">uint32</span> resourceID    = 1; 
  required <span class="number">uint32</span> fromRequestID = 2; 
  required <span class="number">uint32</span> toRequestID   = 3; 
  required <span class="number">double</span> time          = 4; 
}
