"""serve.py MODE [PORT]
  h3  HTTP/1.1 + HTTP/2 on TCP (Hypercorn) and HTTP/3 on UDP (aioquic), same port number, Alt-Svc advertised
  h2  TCP only, ALPN h2 + http/1.1
  h1  TCP only, ALPN http/1.1
"""
import asyncio, os, sys
mode = sys.argv[1]; port = sys.argv[2] if len(sys.argv) > 2 else "4433"
if mode == "h3": os.environ["ALT_SVC_PORT"] = port
from hypercorn.asyncio import serve
from hypercorn.config import Config
from app import app

root = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
c = Config()
c.certfile, c.keyfile = f"{root}/certs/cert.pem", f"{root}/certs/key.pem"
c.bind = [f"127.0.0.1:{port}"]
c.loglevel = "WARNING"
if mode == "h1":
    c.alpn_protocols = ["http/1.1"]
elif mode not in ("h2", "h3"):
    sys.exit("mode must be h3, h2 or h1")

async def main():
    tasks = [serve(app, c)]
    if mode == "h3":
        import h3server
        tasks.append(h3server.start(int(port), c.certfile, c.keyfile))
    await asyncio.gather(*tasks)
asyncio.run(main())