no caching in browser of dynamic web pages sent by YaCy http

this may prevent unnecessary IO caused by cache storage of the browser

git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@7207 6c8d7289-2bf4-0310-a012-ef5d649a1542

source/de/anomic/http/server/HTTPDFileHandler.java

@@ -274,6 +274,9 @@ public final class HTTPDFileHandler {
             if (authorization != null && authorization.length() == 0) authorization = null;
             final String adminAccountBase64MD5 = switchboard.getConfig(HTTPDemon.ADMIN_ACCOUNT_B64MD5, "");
             
+            // cache settings
+            boolean nocache = path.contains("?") || body != null;
+            
             // a bad patch to map the /xml/ path to /api/
             if (path.startsWith("/xml/")) {
                 path = "/api/" + path.substring(5);
@@ -388,6 +391,8 @@ public final class HTTPDFileHandler {
                     }
                 }
             }
+            
+            if (args != null) nocache = true;
         
             // we are finished with parsing
             // the result of value hand-over is in args and argc
@@ -504,7 +509,6 @@ public final class HTTPDFileHandler {
             //We need tp here
             servletProperties templatePatterns = null;
             Date targetDate;
-            boolean nocache = false;
             
             if ((targetClass != null) && (path.endsWith("png"))) {
                 // call an image-servlet to produce an on-the-fly - generated image

source/de/anomic/http/server/HTTPDemon.java

@@ -1188,8 +1188,9 @@ public final class HTTPDemon implements serverHandler, Cloneable {
         headers.put(HeaderFramework.LAST_MODIFIED, HeaderFramework.formatRFC1123(moddate));
         
         if (nocache) {
-            if (httpVersion.toUpperCase().equals(HeaderFramework.HTTP_VERSION_1_1)) headers.put(HeaderFramework.CACHE_CONTROL, "no-cache");
-            else headers.put(HeaderFramework.PRAGMA, "no-cache");
+            headers.put(HeaderFramework.CACHE_CONTROL, "no-cache");
+            headers.put(HeaderFramework.CACHE_CONTROL, "no-store");
+            headers.put(HeaderFramework.PRAGMA, "no-cache");
         }
         
         if (contentType == null) contentType = "text/html; charset=UTF-8";