diff options
| -rw-r--r-- | handlers.go | 19 |
1 files changed, 14 insertions, 5 deletions
diff --git a/handlers.go b/handlers.go index f00eec5..c455e99 100644 --- a/handlers.go +++ b/handlers.go @@ -14,15 +14,24 @@ 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) + + // Stat the index template to get the mod time + var etag string + if indextmpl, err := os.Stat("assets/tmpl/index.html"); err != nil { + log.Printf("Couldn't stat index template for ETag ... %v\n", err) + } else { + etag = fmt.Sprintf("%x", sha256.Sum256([]byte(indextmpl.ModTime().String()))) } - etag := fmt.Sprintf("%x", sha256.Sum256([]byte(indextmpl.ModTime().String()))) + // Take the hex-encoded sha256 sum of the index template's mod time + // to send as an ETag. If an error occured when grabbing the file info, + // the ETag will be empty. w.Header().Set("ETag", "\""+etag+"\"") w.Header().Set("Content-Type", htmlutf8) - err = tmpls.ExecuteTemplate(w, "index.html", confObj.Instance) + + // Pass the confObj.Instance data to the template, + // then send it to the client. + 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) |