1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
import { HttpContext, PreRequestMiddleware } from "alosaur/mod.ts";import { ChatHandler } from "./chat.handler.ts";
export class WebsocketMiddleware implements PreRequestMiddleware {  async onPreRequest(context: HttpContext) {    const request = context.request.serverRequest;
    if (request.headers.get("upgrade") != "websocket") {      // return respondWith(      return new Response("not trying to upgrade as websocket.", { status: 400 });      // );    }
    const { socket, response } = Deno.upgradeWebSocket(request);
    ChatHandler(socket);    // respondWith(response);
    context.response.setImmediately();    return response;  }}