std/http/server.ts>serve is deprecated, io.handler() is incompatible with Deno.serve

[svdvonde]

Describe the bug

Deno's std/http/server.ts>serve is deprecated and will be removed in version 1.0.0. Instead they suggest to use Deno.serve.

This library currently does not seem to be compatible with Deno.serve. It throws the following error:

Deno: No overload matches this call. Overload 1 of 3, '(handler: ServeHandler): Server', gave the following error. Argument of type '(req: Request, connInfo: ConnInfo) => Response | Promise' is not assignable to parameter of type 'ServeHandler'. Overload 2 of 3, '(options: ServeInit & (ServeOptions | ServeTlsOptions)): Server', gave the following error. Argument of type '(req: Request, connInfo: ConnInfo) => Response | Promise' is not assignable to parameter of type 'ServeInit & (ServeOptions | ServeTlsOptions)'.

To Reproduce

deps.ts

export * as socketio from "https://deno.land/x/socket_io@0.2.0/mod.ts";

test.ts

import { socketio } from "./deps.ts";
const io = new socketio.Server();
Deno.serve(io.handler());

Expected behavior

Ideally I would expect the socketio handler to be compatible with Deno.serve.

Platform:

MacOS 13.5 (Intel-based)
deno 1.35.3 (release, x86_64-apple-darwin)
v8 11.6.189.12
typescript 5.1.6

[darrachequesne]

Hi! I was indeed able to reproduce, thanks for reporting the issue 👍

[TMarciDev]

This workaround works for me until it is being fixed

// Use io.handler() directly once it allows using parameter ServeHandlerInfo instead of ConnInfo.
const customIOHandler: Deno.ServeHandler = (
  request: Request,
  info: Deno.ServeHandlerInfo
) => {
  const localAddr: Deno.Addr = {
    transport: "tcp",
    hostname: HOSTNAME,
    port: PORT,
  };

  const connInfo: ConnInfo = {
    remoteAddr: info.remoteAddr,
    localAddr,
  };
  console.log(request)
  return io.handler()(request, connInfo);
};

Deno.serve({ port: PORT, hostname: HOSTNAME }, customIOHandler);