Hands-On Reactive Programming with Python

An AsyncIO HTTP server

The full implementation of the server is as follows, and it is also available in the GitHub repository (https://github.com/PacktPublishing/Hands-On-Reactive-Programming-with-Python) for this book in the http_echo.py script:

import asynciofrom aiohttp import webasync def echo_handler(request):    response = web.Response(text=request.match_info['what'])    await response.prepare(request)    return responseasync def start_server(runner):    await runner.setup()    site = web.TCPSite(runner, 'localhost', 8080)    await site.start()app = web.Application()app.router.add_route('GET', '/echo/{what}', echo_handler)runner = web.AppRunner(app)loop = asyncio.get_event_loop()loop.create_task(start_server(runner))loop.run_forever()loop.close()

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