Send unfurler fallback imgs directly

unfurler/src/index.ts

@@ -8,6 +8,7 @@ import ReusablePage from './concurrency/ReusablePage';
 import ReusableSSRPage from './concurrency/ReusablePage';
 import { parseLanguageUrl } from './language/lang';
 import { matchRoute } from './routes';
+import nodejsPath from 'path';
 import logger from './logger';
 import { TimeoutError } from "puppeteer";
 const puppeteerConfig = require('../puppeteer.config.json');
@@ -228,11 +229,7 @@ class Server {
 
       if (!img) {
         // proxy fallback image from the frontend
-        if (this.secureHost) {
-          https.get(config.SERVER.HOST + matchedRoute.fallbackImg, (got) => got.pipe(res));
-        } else {
-          http.get(config.SERVER.HOST + matchedRoute.fallbackImg, (got) => got.pipe(res));
-        }
+        res.sendFile(nodejsPath.join(__dirname, matchedRoute.fallbackImg));
       } else {
         res.contentType('image/png');
         res.send(img);

unfurler/src/routes.ts

@@ -30,7 +30,7 @@ const routes = {
   },
   lightning: {
     title: "Lightning",
-    fallbackImg: '/resources/previews/lightning.png',
+    fallbackImg: '/resources/img/lightning.png',
     routes: {
       node: {
         render: true,
@@ -68,7 +68,7 @@ const routes = {
   },
   mining: {
     title: "Mining",
-    fallbackImg: '/resources/previews/mining.png',
+    fallbackImg: '/resources/img/mining.png',
     routes: {
       pool: {
         render: true,
@@ -83,13 +83,13 @@ const routes = {
 
 const networks = {
   bitcoin: {
-    fallbackImg: '/resources/previews/dashboard.png',
+    fallbackImg: '/resources/img/dashboard.png',
     routes: {
       ...routes // all routes supported
     }
   },
   liquid: {
-    fallbackImg: '/resources/liquid/liquid-network-preview.png',
+    fallbackImg: '/resources/img/liquid.png',
     routes: { // only block, address & tx routes supported
       block: routes.block,
       address: routes.address,
@@ -97,7 +97,7 @@ const networks = {
     }
   },
   bisq: {
-    fallbackImg: '/resources/bisq/bisq-markets-preview.png',
+    fallbackImg: '/resources/img/bisq.png',
     routes: {} // no routes supported
   }
 };