lnd/lnd.go

@@ -38,8 +38,6 @@ func Request(rKey string) (string, error) {
 	}
 
 	expiryInMin := int64(5)
-	expiryTime := time.Now().Local().Add(time.Minute * time.Duration(expiryInMin)).Unix()
-
 	invoice, err := lndCli.AddInvoice(ctx, &lnrpc.Invoice{
 		Memo:   fmt.Sprintf("nostr addr %s", rKey),
 		Expiry: expiryInMin * 60,
@@ -49,6 +47,10 @@ func Request(rKey string) (string, error) {
 		l.Fatal().Msg("unable to create lnd invoice")
 		return "", errors.New("internal server error")
 	}
+
+	// add a minute to the expiry time to ensure entries aren't removed from redis before they are expired
+	expiryTime := time.Now().Local().Add(time.Minute * time.Duration(expiryInMin+1)).Unix()
+
 	paymentReq := invoice.PaymentRequest
 	rHash := hex.EncodeToString(invoice.RHash)
 

nostr/nostr.go

@@ -43,6 +43,7 @@ func RequestNostrAddr(w http.ResponseWriter, r *http.Request) {
 	l := logger.Get()
 	switch r.Method {
 	case "GET":
+		w.WriteHeader(http.StatusOK)
 		http.ServeFile(w, r, "html/nostr_form.html")
 	case "POST":
 		r.ParseForm()
@@ -110,6 +111,11 @@ func RequestNostrAddr(w http.ResponseWriter, r *http.Request) {
 		err = redisCli.Set(ctx, rKey, enc, 0).Err()
 		if err != nil {
 			l.Error().Msg("unable to connect to redis")
+			w.WriteHeader(http.StatusServiceUnavailable)
+			json.NewEncoder(w).Encode(&jsonErrorMessage{
+				Error: "service unavailable",
+			})
+			return
 		}
 
 		// return qr code
@@ -121,12 +127,20 @@ func RequestNostrAddr(w http.ResponseWriter, r *http.Request) {
 		tmplt, err := template.ParseFiles("html/nostr_qr_response.html")
 		if err != nil {
 			l.Error().Msg("unable to parse template")
+			w.WriteHeader(http.StatusServiceUnavailable)
+			json.NewEncoder(w).Encode(&jsonErrorMessage{
+				Error: "service unavailable",
+			})
+			return
 		}
-		w.Header().Set("Content-Type", "text/html")
-		w.WriteHeader(http.StatusOK)
 		err = tmplt.Execute(w, response)
 		if err != nil {
 			l.Error().Msg("unable to connect to render template")
+			w.WriteHeader(http.StatusServiceUnavailable)
+			json.NewEncoder(w).Encode(&jsonErrorMessage{
+				Error: "service unavailable",
+			})
+			return
 		}
 		return
 	}