http: Increase maxage for caching for images. (#4594).

Images were previously cached for 10 seconds. Since images
rarely change and we now use icons for categories in the epg
grid, it makes sense to cache them at the client for longer.

Issue: #4594.

diff --git a/src/webui/webui.c b/src/webui/webui.c
index 6225405938662a94988d13c64ee00df0eec036cd..2652e0f08e266dfe1c36c5469003f3af019a9cea 100644 (file)
--- a/src/webui/webui.c
+++ b/src/webui/webui.c
@@ -292,6 +292,7 @@ page_static_file(http_connection_t *hc, const char *_remain, void *opaque)
   char buf[4096];
   const char *gzip = NULL;
   int nogzip = 0;
+  int maxage = 10;              /* Default age */
 
   if(_remain == NULL)
     return HTTP_STATUS_NOT_FOUND;
@@ -316,10 +317,14 @@ page_static_file(http_connection_t *hc, const char *_remain, void *opaque)
       content = "text/css; charset=UTF-8";
     else if(!strcmp(postfix, "git"))
       nogzip = 1;
-    else if(!strcmp(postfix, "jpg"))
-      nogzip = 1;
-    else if(!strcmp(postfix, "png"))
+    else if(!strcmp(postfix, "jpg") || !strcmp(postfix, "png")) {
       nogzip = 1;
+      /* Increase amount of time in seconds that a client can cache
+       * images since they rarely change. This avoids clients
+       * requesting category icons frequently.
+       */
+      maxage = 60 * 60;
+    }
   }
 
   fb_file *fp = fb_open(path, 0, (nogzip || gzip) ? 0 : 1);
@@ -332,7 +337,7 @@ page_static_file(http_connection_t *hc, const char *_remain, void *opaque)
     gzip = "gzip";
 
   http_send_begin(hc);
-  http_send_header(hc, 200, content, size, gzip, NULL, 10, 0, NULL, NULL);
+  http_send_header(hc, 200, content, size, gzip, NULL, maxage, 0, NULL, NULL);
   while (!fb_eof(fp)) {
     ssize_t c = fb_read(fp, buf, sizeof(buf));
     if (c < 0) {