error 10013

[bogdankol]

Hi!
I'm trying to run this code in Deno but the result is: Uncaught (in promise) PermissionDenied: An attempt was made to access a socket in a way forbidden by its access permissions. (os error 10013)

  import { serve } from "https://deno.land/std@0.150.0/http/server.ts";
  import { Server } from "https://deno.land/x/socket_io@0.1.1/mod.ts";

  const io = new Server();

  io.on("connection", (socket) => {
    console.log(`socket ${socket.id} connected`);

    socket.emit("hello", "world");

    socket.on("disconnect", (reason) => {
      console.log(`socket ${socket.id} disconnected due to ${reason}`);
    });
  });

  await serve(io.handler(), {
    port: 3000,
  });

And before that code I tried to run

   import { serve } from "https://deno.land/std@0.50.0/http/server.ts";
  
   const server = serve({ port: 8008 });
   console.log("http://localhost:8008/");
  
   for await (const req of server) {
   
    if (req.url === '/') {
    req.respond({
      status: 200,
      body: await Deno.open('./public/index.html')
   });
  }
    
  }

and it shows the same error. Is there any way to fix this or to run deno properly?

[kitsonk]

This is not an issue with Deno, or how you are running deno. The error originates from the underlying operating system indicating that environment/users that deno is running under does not have permissions to open a socket to listen for HTTP connections.

[bogdankol]

Thank you! Could you please tell me a way to allow socket listening (win10)?

[Re0niDo]

Ran into the same issue (also Windows 10) and found this discussion. Definetely not an issue with Deno, but I'll leave a solution that helped me here in case someone also finds this.

The solution was to change the port. To fix the two code examples in the first post you should change port: 3000 and port: 8008 to, for example, port: 10001.

In my case I was looking at Fresh. I created a new app (deno run -Ar jsr:@fresh/init), then when I ran deno tash dev I encountered the same error. In my case adding server: { port: 10001 } to vite.config.ts fixed the problem.