http cached headers

server/server_http.go

@@ -5,6 +5,7 @@ import (
 	"html/template"
 	"net/http"
 	"strings"
+	"time"
 
 	ctstatic "github.com/boypt/simple-torrent/static"
 	"github.com/jpillora/velox"
@@ -47,6 +48,10 @@ func (s *Server) webHandle(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
+	uptime := time.Unix(s.baseInfo.Uptime, 0)
+	cacheSince := uptime.Format(http.TimeFormat)
+	cacheExpire := uptime.AddDate(0, 1, 0).Format(http.TimeFormat) // 1 month expire date
+
 	pathDir := strings.SplitN(r.URL.Path[1:], "/", 2)
 	switch pathDir[0] {
 	case "search":
@@ -62,10 +67,14 @@ func (s *Server) webHandle(w http.ResponseWriter, r *http.Request) {
 	case "download":
 		s.dlfilesh.ServeHTTP(w, r)
 	case s.baseInfo.Version:
+		w.Header().Set("Last-Modified", cacheSince)
+		w.Header().Set("Expires", cacheExpire)
 		w.Header().Set("Cache-Control", "max-age:290304000, public")
 		s.verStatich.ServeHTTP(w, r)
 	default:
 		//no match, assume static file
+		w.Header().Set("Last-Modified", cacheSince)
+		w.Header().Set("Expires", cacheExpire)
 		w.Header().Set("Cache-Control", "max-age:290304000, public")
 		s.statich.ServeHTTP(w, r)
 	}