aiohttp cli-serv header errors

cli.py

import asyncio
import os

import aiohttp

HOST = os.getenv('HOST', '0.0.0.0')
PORT = int(os.getenv('PORT', 8080))

URL = f'http://{HOST}:{PORT}/'


headers = {
    "SomeOtherHeader": "somecoolstr",
    "CustomHeader": "somebrokenstr\n",
    "AHeader": "somecoolstr",
}


async def main():
    async with aiohttp.ClientSession() as session:
        async with session.get(URL, headers=headers) as resp:
            print(resp.status)
            print(await resp.text())


if __name__ == '__main__':
    loop = asyncio.get_event_loop()
    loop.run_until_complete(main())

output

======== Running on http://0.0.0.0:8080 ========
(Press CTRL+C to quit)
Request.headers {'Host': '0.0.0.0:8080', 'SomeOtherHeader': 'somecoolstr', 'CustomHeader': 'somebrokenstr'}

serv.py

import asyncio
import os
import logging
import aiohttp.web

HOST = os.getenv('HOST', '0.0.0.0')
PORT = int(os.getenv('PORT', 8080))


async def testhandler(request):
    print("Request.headers", dict(request.headers))
    return aiohttp.web.Response(text='Test handle')


def main():
    loop = asyncio.get_event_loop()
    app = aiohttp.web.Application(loop=loop)
    logging.basicConfig(level=logging.DEBUG)
    app.router.add_route('GET', '/', testhandler)
    aiohttp.web.run_app(app, host=HOST, port=PORT)


if __name__ == '__main__':
    main()