aboutsummaryrefslogtreecommitdiffstats
path: root/web
diff options
context:
space:
mode:
Diffstat (limited to 'web')
-rw-r--r--web/web.go33
1 files changed, 24 insertions, 9 deletions
diff --git a/web/web.go b/web/web.go
index d871990..fdeaeae 100644
--- a/web/web.go
+++ b/web/web.go
@@ -14,6 +14,7 @@ import (
"net/http"
"path"
"strconv"
+ "time"
)
func indexHandler(w http.ResponseWriter, r *http.Request) {
@@ -131,24 +132,38 @@ func categoryHandler(w http.ResponseWriter, r *http.Request) {
}
func imageProxyHandler(w http.ResponseWriter, r *http.Request) {
- // caching...???
-
imgURL := r.URL.String()
- fmt.Printf("proxying: %s\n", imgURL)
decodedURL, err := base64.URLEncoding.DecodeString(imgURL)
- fmt.Printf("decoded: %s\n", decodedURL)
+ // pseudo-caching
+ if r.Header.Get("If-None-Match") == string(decodedURL) {
+ w.WriteHeader(http.StatusNotModified)
+ return
+ }
+
+ if r.Header.Get("Etag") == string(decodedURL) {
+ w.WriteHeader(http.StatusNotModified)
+ return
+ }
+
+ // set headers
+ w.Header().Set("ETag", string(decodedURL))
+ w.Header().Set("Cache-Control", "public")
+ w.Header().Set("Expires", time.Now().Add(48*time.Hour).Format(time.RFC1123))
+
+ // grab the img
resp, err := http.Get(string(decodedURL))
if err != nil {
- http.Error(w, "sorry", 404)
+ http.Error(w, "filed to proxy image", 404)
return
}
- bts, _ := ioutil.ReadAll(resp.Body)
-
- etag := crypto.HashFromBytes(body)
+ bts, err := ioutil.ReadAll(resp.Body)
+ if err != nil {
+ http.Error(w, "failed to read proxy image", 404)
+ return
+ }
- w.Header().Set("Content-Type", "application/json")
w.Write(bts)
return
}