#!/usr/bin/env uv run
# /// script
# requires-python = ">=3.13"
# dependencies = [
#     "websockets",
# ]
# ///
import asyncio
import websockets
from websockets.http import Headers

async def handler(ws):
    while True:
        msg = await ws.recv()
        print(msg)
        await ws.send(f"echo {msg}")

async def headers_printer(path, req):
    for hdr, value in req.headers.items():
        hdr += ":"
        print(f"{hdr:30}{value}")

async def main():
    async with websockets.serve(handler, '0.0.0.0', 8078, process_request=headers_printer):
        await asyncio.Future()

asyncio.run(main())