Implement domain request failure

boringproxy.go

@@ -288,6 +288,24 @@ func Listen() {
 				http.Redirect(w, r, fmt.Sprintf("https://%s/edit-tunnel?domain=%s", adminDomain, domain), 303)
 			}
 
+		} else if r.URL.Path == "/dnsapi/failure" {
+
+			r.ParseForm()
+
+			requestId := r.Form.Get("request-id")
+
+			// Ensure the request exists
+			_, err := db.GetDNSRequest(requestId)
+			if err != nil {
+				w.WriteHeader(500)
+				io.WriteString(w, err.Error())
+				return
+			}
+
+			db.DeleteDNSRequest(requestId)
+
+			http.Redirect(w, r, "/alert?message=Domain request failed", 303)
+
 		} else if hostDomain == db.GetAdminDomain() {
 			if strings.HasPrefix(r.URL.Path, "/api/") {
 				http.StripPrefix("/api", api).ServeHTTP(w, r)

database.go

@@ -38,6 +38,7 @@ type DNSRecord struct {
 	Type     string `json:"type"`
 	Value    string `json:"value"`
 	TTL      int    `json:"ttl"`
+	Priority int    `json:"priority"`
 }
 
 type Tunnel struct {

ui_handler.go

@@ -259,6 +259,13 @@ func (h *WebUiHandler) handleWebUiRequest(w http.ResponseWriter, r *http.Request
 		http.Redirect(w, r, "/tunnels", 303)
 	case "/loading":
 		h.handleLoading(w, r)
+	case "/alert":
+
+		r.ParseForm()
+
+		message := r.Form.Get("message")
+
+		h.alertDialog(w, r, message, "/")
 	default:
 		if strings.HasPrefix(r.URL.Path, "/tunnels/") {