[squid-users] max-age and Last-Modified header

Will squid cache the response from a origin server if the server does
NOT send a Last-Modified header or a max-age ( greater than 0) header?
Looking at the code below, I see that it needs the last modified header.
Is that true ? Am I looking at the right place ?

refreshIsCachable(const StoreEntry * entry)
{
     /*
      * Don't look at the request to avoid no-cache and other nuisances.
      * the object should have a mem_obj so the URL will be found there.
      * 60 seconds delta, to avoid objects which expire almost
      * immediately, and which can't be refreshed.
      */
     int reason = refreshCheck(entry, NULL, Config.minimum_expiry_time);
     refreshCounts[rcStore].total++;
     refreshCounts[rcStore].status[reason]++;
     if (reason < 200)
     /* Does not need refresh. This is certainly cachable */
     return 1;
     if (entry->lastmod < 0)
     {
         debug(22, 9) ("Mohan:refreshCheck: %d\n",entry->lastmod);
         /* Last modified is needed to do a refresh */
         return 0;
     }
     if (entry->mem_obj == NULL)
     /* no mem_obj? */
     return 1;
     if (entry->mem_obj->reply == NULL)
     /* no reply? */
     return 1;
     if (entry->mem_obj->reply->content_length == 0)
     /* No use refreshing (caching?) 0 byte objects */
     return 0;
     /* This seems to be refreshable. Cache it */
     return 1;
}

-- 
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Mohan Rao
(650 937 3369) / mohansrao@aol.com
AIM : mohansrao
MBA at Santa Clara University
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