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http client/server for asyncio

Project description

http client/server for asyncio

aiohttp logo



aiohttp is offered under the Apache 2 license.

Getting started


To retrieve something from the web:

import aiohttp

def get_body(url):
    response = yield from aiohttp.request('GET', url)
    return (yield from

You can use the get command like this anywhere in your asyncio powered program:

response = yield from aiohttp.request('GET', '')
body = yield from

If you want to use timeouts for aiohttp client side please use standard asyncio approach:

yield from asyncio.wait_for(request('GET', url), 10)


In aiohttp 0.12 we’ve added highlevel API for web HTTP server.

There is simple usage example:

import asyncio
from aiohttp import web

def handle(request):
    name = request.match_info.get('name', "Anonymous")
    text = "Hello, " + name
    return web.Response(body=text.encode('utf-8'))

def init(loop):
    app = web.Application(loop=loop)
    app.router.add_route('GET', '/{name}', handle)

    srv = yield from loop.create_server(app.make_handler(),
                                        '', 8080)
    print("Server started at")
    return srv

loop = asyncio.get_event_loop()


0.13.1 (12-31-2014)

  • Add aiohttp.web.StreamResponse.started property #213
  • Html escape traceback text in ServerHttpProtocol.handle_error
  • Mention handler and middlewares in aiohttp.web.RequestHandler.handle_request on error (#218)

0.13.0 (12-29-2014)

  • StreamResponse.charset converts value to lower-case on assigning.
  • Chain exceptions when raise ClientRequestError.
  • Support custom regexps in route variables #204
  • Fixed graceful shutdown, disable keep-alive on connection closing.
  • Decode http message with utf-8 encoding, some servers send headers in utf-8 encoding #207
  • Support aiohtt.web middlewares #209
  • Add ssl_context to TCPConnector #206

0.12.0 (12-12-2014)

  • Deep refactoring of aiohttp.web in backward-incompatible manner. Sorry, we have to do this.
  • Automatically force aiohttp.web handlers to coroutines in UrlDispatcher.add_route() #186
  • Rename Request.POST() function to
  • Added POST attribute
  • Response processing refactoring: constructor does’t accept Request instance anymore.
  • Pass application instance to finish callback
  • Exceptions refactoring
  • Do not unquote query string in aiohttp.web.Request
  • Fix concurrent access to payload in RequestHandle.handle_request()
  • Add access logging to aiohttp.web
  • Gunicorn worker for aiohttp.web
  • Removed deprecated AsyncGunicornWorker
  • Removed deprecated HttpClient

0.11.0 (11-29-2014)

  • Support named routes in aiohttp.web.UrlDispatcher #179
  • Make websocket subprotocols conform to spec #181

0.10.2 (11-19-2014)

  • Don’t unquote environ[‘PATH_INFO’] in #177

0.10.1 (11-17-2014)

  • aiohttp.web.HTTPException and descendants now files response body with string like 404: NotFound
  • Fix multidict __iter__, the method should iterate over keys, not (key, value) pairs.

0.10.0 (11-13-2014)

  • Add aiohttp.web subpackage for highlevel http server support.
  • Add reason optional parameter to aiohttp.protocol.Response ctor.
  • Fix aiohttp.client bug for sending file without content-type.
  • Change error text for connection closed between server responses from ‘Can not read status line’ to explicit ‘Connection closed by server’
  • Drop closed connections from connector #173
  • Set server.transport to None on .closing() #172

Project details

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