aiohttp 0.16.0

http client/server for asyncio

http client/server for asyncio

Features

• Supports both client and server side of HTTP protocol.

• Supports both client and server Web-Sockets out-of-the-box.

• Web-server has middlewares and pluggable routing.

Requirements

• Python >= 3.3

• asyncio https://pypi.python.org/pypi/asyncio

License

aiohttp is offered under the Apache 2 license.

Documentation

http://aiohttp.readthedocs.org/

Source code

The latest developer version is available in a github repository: https://github.com/KeepSafe/aiohttp

Getting started

Client

To retrieve something from the web:

import aiohttp
import asyncio

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

if __name__ == '__main__':
    loop = asyncio.get_event_loop()
    raw_html = loop.run_until_complete(get_body('http://python.org'))
    print(raw_html)

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

response = yield from aiohttp.request('GET', 'http://python.org')
body = yield from response.read()
print(body)

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

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

Server

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

This is simple usage example:

import asyncio
from aiohttp import web


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


@asyncio.coroutine
def wshandler(request):
    ws = web.WebSocketResponse()
    ws.start(request)

    while True:
        msg = yield from ws.receive()

        if msg.tp == web.MsgType.text:
            ws.send_str("Hello, {}".format(msg.data))
        elif msg.tp == web.MsgType.binary:
            ws.send_bytes(msg.data)
        elif msg.tp == web.MsgType.close:
            break

    return ws


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

    srv = yield from loop.create_server(app.make_handler(), '127.0.0.1', 8080)
    print("Server started at http://127.0.0.1:8080")
    return srv

loop = asyncio.get_event_loop()
loop.run_until_complete(init(loop))
loop.run_forever()

CHANGES

0.16.0 (05-26-2015)

• Unset waiter future after cancellation #363

• Update request url with query parameters #372

• Support new fingerprint param of TCPConnector to enable verifying ssl certificates via md5, sha1, or sha256 digest #366

• Setup uploaded filename if field value is binary and transfer encoding is not specified #349

• Implement ClientSession.close() method

• Implement connector.closed readonly property

• Implement ClientSession.closed readonly property

• Implement ClientSession.connector readonly property

• Implement ClientSession.detach method

• Add __del__ to client-side objects: sessions, connectors, connections, requests, responses.

• Refactor connections cleanup by connector #357

• Add limit parameter to connector constructor #358

• Add request.has_body property #364

• Add response_class parameter to ws_connect() #367

• ProxyConnector doesn’t support keep-alive requests by default starting from now #368

• Add connector.force_close property

• Add ws_connect to ClientSession #374

• Support optional chunk_size parameter in router.add_static()

0.15.3 (04-22-2015)

• Fix graceful shutdown handling

• Fix Expect header handling for not found and not allowed routes #340

0.15.2 (04-19-2015)

• Flow control subsystem refactoring

• Http server performace optimizations

• Allow to match any request method with *

• Explicitly call drain on transport #316

• Make chardet module dependency mandatory #318

• Support keep-alive for HTTP 1.0 #325

• Do not chunk single file during upload #327

• Add ClientSession object for cookie storage and default headers #328

• Add keep_alive_on argument for http server handler.

0.15.1 (03-31-2015)

• Pass Autobahn Testsuit tests

• Fixed websocket fragmentation

• Fixed websocket close procedure

• Fixed parser buffer limits

• Added timeout parameter to WebSocketResponse ctor

• Added WebSocketResponse.close_code attribute

0.15.0 (03-27-2015)

• Client WebSockets support

• New Multipart system #273

• Support for “Except” header #287 #267

• Set default Content-Type for post requests #184

• Fix issue with construction dynamic route with regexps and trailing slash #266

• Add repr to web.Request

• Add repr to web.Response

• Add repr for NotFound and NotAllowed match infos

• Add repr for web.Application

• Add repr to UrlMappingMatchInfo #217

• Gunicorn 19.2.x compatibility