http client/server for asyncio
Project description
http client/server for asyncio
Features
Supports both client and server side of HTTP protocol.
Supports Web-Sockets out-of-the-box.
Web-server has middlewares and pluggable routing.
Requirements
Python >= 3.3
License
aiohttp is offered under the Apache 2 license.
Documentation
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.
There 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 init(loop):
app = web.Application(loop=loop)
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
0.14.4 (01-29-2015)
Fix issue with error during constructing of url with regex parts #264
0.14.3 (01-28-2015)
Use path=’/’ by default for cookies #261
0.14.2 (01-23-2015)
Connections leak in BaseConnector #253
Do not swallow websocket reader exceptions #255
web.Request’s read, text, json are memorized #250
0.14.1 (01-15-2015)
HttpMessage._add_default_headers does not overwrite existing headers #216
Expose multidict classes at package level
add aiohttp.web.WebSocketResponse
According to RFC 6455 websocket subprotocol preference order is provided by client, not by server
websocket’s ping and pong accept optional message parameter
multidict views do not accept getall parameter anymore, it returns the full body anyway.
multidicts have optional Cython optimization, cythonized version of multidicts is about 5 times faster than pure Python.
multidict.getall() returns list, not tuple.
Backward imcompatible change: now there are two mutable multidicts (MultiDict, CIMultiDict) and two immutable multidict proxies (MultiDictProxy and CIMultiDictProxy). Previous edition of multidicts was not a part of public API BTW.
Router refactoring to push Not Allowed and Not Found in middleware processing
Convert ConnectionError to aiohttp.DisconnectedError and don’t eat ConnectionError exceptions from web handlers.
Remove hop headers from Response class, wsgi response still uses hop headers.
Allow to send raw chunked encoded response.
Allow to encode output bytes stream into chunked encoding.
Allow to compress output bytes stream with deflate encoding.
Server has 75 seconds keepalive timeout now, was non-keepalive by default.
Application doesn’t accept **kwargs anymore (#243).
Request is inherited from dict now for making per-request storage to middlewares (#242).
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