Proxying

src/app.ts

@@ -9,9 +9,10 @@ import fastifySwagger from "@fastify/swagger";
 import fastifySwaggerUi from "@fastify/swagger-ui";
 import ejs from "ejs";
 
-import getRoute from "./routes/browser/get";
-import parseRoute from "./routes/api/parse";
 import indexRoute from "./routes/browser/index";
+import getRoute from "./routes/browser/get";
+import proxyRoute from "./routes/browser/proxy";
+import parseRoute from "./routes/api/parse";
 import rawHtml from "./routes/api/raw-html";
 
 import publicConfig from "./publicConfig";
@@ -54,6 +55,7 @@ class App {
 
     fastify.register(indexRoute);
     fastify.register(getRoute);
+    fastify.register(proxyRoute);
     fastify.register(parseRoute);
     fastify.register(rawHtml);
 

src/routes/browser/proxy.ts

@@ -0,0 +1,18 @@
+import { FastifyInstance } from "fastify";
+import { IProxySchema, ProxySchema } from "../../types/requests/browser";
+import axios from "../../types/axios";
+
+export default async function proxyRoute(fastify: FastifyInstance) {
+  fastify.get<IProxySchema>(
+    "/proxy",
+    { schema: ProxySchema },
+    async (request, reply) => {
+      const response = await axios.get(request.query.url);
+      const mime: string | undefined = response.headers["content-type"]?.toString();
+      const clen: string | undefined = response.headers["content-length"]?.toString();
+      mime && reply.header("Content-Type", mime);
+      clen && reply.header("Content-Length", Number(clen));
+      return reply.send(response.data);
+    }
+  );
+}

src/types/requests/browser.ts

@@ -6,10 +6,9 @@ export interface IGetSchema {
   Querystring: IGetQuerySchema;
 }
 
-export const indexSchema = {
-  produces: ["text/html"],
-  hide: true
-};
+export interface IProxySchema {
+  Querystring: IProxyQuerySchema;
+}
 
 export const getQuerySchema = {
   type: "object",
@@ -32,9 +31,32 @@ export const getQuerySchema = {
 } as const;
 export type IGetQuerySchema = FromSchema<typeof getQuerySchema>;
 
+export const proxyQuerySchema = {
+  type: "object",
+  required: ["url"],
+  properties: {
+    url: {
+      type: "string",
+      description: "URL",
+    },
+  }
+} as const;
+export type IProxyQuerySchema = FromSchema<typeof proxyQuerySchema>;
+
+export const indexSchema = {
+  hide: true,
+  produces: ["text/html"],
+};
+
 export const GetSchema: FastifySchema = {
   description: "Get page",
   hide: true,
   querystring: getQuerySchema,
   produces: ["text/html", "text/plain"],
 };
+
+export const ProxySchema: FastifySchema = {
+  description: "Proxy resource",
+  hide: true,
+  querystring: proxyQuerySchema,
+}