Changeset 2957

Timestamp:

2002-02-09T20:37:28+13:00 (22 years ago)

Author:

sjboddie

Message:

Changed my mind about last changes (adding http headers to prevent caching).
I've returned it to how it was (just a Last-Modified header being sent for
collection-specific pages) and added some commented out code which may be
uncommented to prevent caching (when do interface development work for
example).

File:

• trunk/gsdl/src/recpt/receptionist.cpp (modified) (2 diffs)

trunk/gsdl/src/recpt/receptionist.cpp

@@ -757 +757 @@
     // content response
 
-    // prevent dynamic content from being cached
-    contentout << text_t2ascii 
-               << "Expires: 0\n"
-               << "Cache-Control: no-cache, must-revalidate\n";
-
     // use the later of build.cfg and collect.cfg modification times
     // as the Last-Modified: header, for caching values
@@ -803 +798 @@
       }
     }
+
+    /*
+      // This block of code should prevent the users browser from caching
+      // the page. It may be useful to uncomment this code and comment out
+      // that directly above (which sets a "Last-Modified" header) when
+      // doing interface development work where a given page may be
+      // changing often.
+
+    contentout << "Expires: Mon, 26 Jul 1997 05:00:00 GMT\n"; // date in the past
+    tm *tm_ptr = NULL;
+    time_t t = time(NULL);
+    tm_ptr = gmtime (&t);
+    if (tm_ptr != NULL) {
+      char *timestr = new char[128];
+      strftime (timestr, 128, "%a, %d %b %Y %H:%M:%S", tm_ptr);
+      contentout << "Last-Modified: " << timestr << " GMT\n"; // always modified
+      delete timestr;
+    }
+    contentout << "Cache-Control: no-cache, must-revalidate\n"; // HTTP/1.1
+    contentout << "Pragma: no-cache\n"; // HTTP/1.0
+    */
 
     contentout << text_t2ascii << "Content-type: " << response_data << "\n\n";