#!/usr/bin/env python3

"""Example for aiohttp.web basic server

"""

import textwrap

from aiohttp import web

async def intro(request):

txt = textwrap.dedent("""\

Type {url}/hello/John {url}/simple or {url}/change_body

in browser url bar

""").format(url='127.0.0.1:8080')

binary = txt.encode('utf8')

resp = web.StreamResponse()

resp.content_length = len(binary)

resp.content_type = 'text/plain'

await resp.prepare(request)

await resp.write(binary)

return resp

async def simple(request):

return web.Response(text="Simple answer")

async def change_body(request):

resp = web.Response()

resp.body = b"Body changed"

resp.content_type = 'text/plain'

return resp

async def hello(request):

resp = web.StreamResponse()

name = request.match_info.get('name', 'Anonymous')

answer = ('Hello, ' + name).encode('utf8')

resp.content_length = len(answer)

resp.content_type = 'text/plain'

await resp.prepare(request)

await resp.write(answer)

await resp.write_eof()

return resp

def init():

app = web.Application()

app.router.add_get('/', intro)

app.router.add_get('/simple', simple)

app.router.add_get('/change_body', change_body)

app.router.add_get('/hello/{name}', hello)

app.router.add_get('/hello', hello)

return app

web.run_app(init())