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authorBen Morrison <ben@gbmor.dev>2019-05-13 22:22:05 -0400
committerBen Morrison <ben@gbmor.dev>2019-05-13 22:22:13 -0400
commitec2c4edb9d47dfee9d402bf63d3d006900fbc5a1 (patch)
tree139d8cb877e2f43ff717965046cd4ff3f5c9135c /handlers.go
parent920306cbcad3df05e01699cd19f3767e069ab139 (diff)
downloadgetwtxt-ec2c4edb9d47dfee9d402bf63d3d006900fbc5a1.tar.gz
send etag for index. sha256 of template mod time.
Diffstat (limited to 'handlers.go')
-rw-r--r--handlers.go9
1 files changed, 8 insertions, 1 deletions
diff --git a/handlers.go b/handlers.go
index 961ac4f..f00eec5 100644
--- a/handlers.go
+++ b/handlers.go
@@ -14,8 +14,15 @@ import (
 
 // handles "/"
 func indexHandler(w http.ResponseWriter, _ *http.Request) {
+	indextmpl, err := os.Stat("assets/tmpl/index.html")
+	if err != nil {
+		log.Printf("Couldn't stat index template, sending empty ETag ... %v\n", err)
+	}
+
+	etag := fmt.Sprintf("%x", sha256.Sum256([]byte(indextmpl.ModTime().String())))
+	w.Header().Set("ETag", "\""+etag+"\"")
 	w.Header().Set("Content-Type", htmlutf8)
-	err := tmpls.ExecuteTemplate(w, "index.html", confObj.Instance)
+	err = tmpls.ExecuteTemplate(w, "index.html", confObj.Instance)
 	if err != nil {
 		log.Printf("Error writing to HTTP stream: %v\n", err)
 		http.Error(w, err.Error(), http.StatusInternalServerError)