s="def">checkRequest</a> ::  <a href="Network-Mom-Stompl-Patterns-Basic.html#t:ClientA">ClientA</a> i o -&gt; Int -&gt; IO (Maybe (Message i))</p><div class="doc"><p>This function serves as a &quot;delayed&quot; receiver for the case
   that the timeout of a request has expired.
   When using this function, it is assumed
   that a request has been made, but no response has been received.
   It can be used in time-critical applications,
   where the client may use the time between request and reply
   produc