package main

import (
    "fmt"
    "log"
    "net/http"
    "os"

    "github.com/gorilla/websocket"
)

var upgrader = websocket.Upgrader{
    CheckOrigin: func(r *http.Request) bool {
        return true // allow all connections
    },
}

func handler(w http.ResponseWriter, r *http.Request) {
    // Upgrade HTTP to WebSocket
    conn, err := upgrader.Upgrade(w, r, nil)
    if err != nil {
        log.Println("Upgrade error:", err)
        return
    }
    defer conn.Close()

    // Send message to client
    err = conn.WriteMessage(websocket.TextMessage, []byte("Hello client!"))
    if err != nil {
        log.Println("Write error:", err)
    }
}

func main() {
    port := os.Getenv("PORT")
    if port == "" {
        port = "8080"
    }

    http.HandleFunc("/", handler)

    fmt.Printf("Listening on port %s...\n", port)
    log.Fatal(http.ListenAndServe(":"+port, nil))
}

Traceback (most recent call last):
  File "c:\Users\zacpe\Desktop\PY\---\client2.py", line 10, in 
    asyncio.run(connect())
    ~~~~~~~~~~~^^^^^^^^^^^
  File "C:\Users\zacpe\AppData\Local\Programs\Python\Python313\Lib\asyncio\runners.py", line 195, in run
    return runner.run(main)
           ~~~~~~~~~~^^^^^^
  File "C:\Users\zacpe\AppData\Local\Programs\Python\Python313\Lib\asyncio\runners.py", line 118, in run
    return self._loop.run_until_complete(task)
           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^
  File "C:\Users\zacpe\AppData\Local\Programs\Python\Python313\Lib\asyncio\base_events.py", line 725, in run_until_complete
    return future.result()
           ~~~~~~~~~~~~~^^
  File "c:\Users\zacpe\Desktop\PY\---\client2.py", line 6, in connect
    async with websockets.connect(uri) as websocket:
               ~~~~~~~~~~~~~~~~~~^^^^^
  File "C:\Users\zacpe\AppData\Local\Programs\Python\Python313\Lib\site-packages\websockets\legacy\client.py", line 633, in __aenter__
    return await self
           ^^^^^^^^^^
  File "C:\Users\zacpe\AppData\Local\Programs\Python\Python313\Lib\site-packages\websockets\legacy\client.py", line 650, in __await_impl_timeout__
    return await asyncio.wait_for(self.__await_impl__(), self.open_timeout)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\zacpe\AppData\Local\Programs\Python\Python313\Lib\asyncio\tasks.py", line 507, in wait_for
    return await fut
           ^^^^^^^^^
  File "C:\Users\zacpe\AppData\Local\Programs\Python\Python313\Lib\site-packages\websockets\legacy\client.py", line 659, in __await_impl__        
    await protocol.handshake(
    ...<5 lines>...
    )
  File "C:\Users\zacpe\AppData\Local\Programs\Python\Python313\Lib\site-packages\websockets\legacy\client.py", line 328, in handshake
    raise InvalidStatusCode(status_code, response_headers)
websockets.exceptions.InvalidStatusCode: server rejected WebSocket connection: HTTP 403

import asyncio
import websockets

async def connect():
    uri = "wss://sharpengine.smoothcube.net/ws"
    async with websockets.connect(uri) as websocket:
        msg = await websocket.recv()
        print("Server says:", msg)

asyncio.run(connect())