aiohttp 0.15.1

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

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

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 = WebSocketResponse()
    ok, protocol = resp.can_start(request)
    if not ok:
        return web.HTTPBadRequest()
    else:
        ws.start(request)

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

        if msg.tp == web.MsgType.text:
           ws.send_str(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', wshandle)
    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

0.15.1 (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