aiohttp 0.12.0

http client/server for asyncio

http client/server for asyncio

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/

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 (experimental)

In aiohttp 0.10 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

0.12.0 (12-12-2014)

• Automatically force aiohttp.web handlers to coroutines in UrlDispatcher.add_route() #186
• Rename Request.POST() function to Request.post()
• Added POST attribute
• Response processing refactoring
• 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 wsgi.py #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

0.9.3 (10-30-2014)

• Fix compatibility with asyncio 3.4.1+ #170

0.9.2 (10-16-2014)

• Improve redirect handling #157
• Send raw files as is #153
• Better websocket support #150

0.9.1 (08-30-2014)

• Added MultiDict support for client request params and data #114.
• Fixed parameter type for IncompleteRead exception #118.
• Strictly require ASCII headers names and values #137
• Keep port in ProxyConnector #128.
• Python 3.4.1 compatibility #131.

0.9.0 (07-08-2014)

• Better client basic authentication support #112.
• Fixed incorrect line splitting in HttpRequestParser #97.
• Support StreamReader and DataQueue as request data.
• Client files handling refactoring #20.
• Backward incompatible: Replace DataQueue with StreamReader for request payload #87.

0.8.4 (07-04-2014)

• Change ProxyConnector authorization parameters.

0.8.3 (07-03-2014)

• Publish TCPConnector properties: verify_ssl, family, resolve, resolved_hosts.
• Don’t parse message body for HEAD responses.
• Refactor client response decoding.

0.8.2 (06-22-2014)

• Make ProxyConnector.proxy immutable property.
• Make UnixConnector.path immutable property.
• Fix resource leak for aiohttp.request() with implicit connector.
• Rename Connector’s reuse_timeout to keepalive_timeout.

0.8.1 (06-18-2014)

• Use case insensitive multidict for server request/response headers.
• MultiDict.getall() accepts default value.
• Catch server ConnectionError.
• Accept MultiDict (and derived) instances in aiohttp.request header argument.
• Proxy ‘CONNECT’ support.

0.8.0 (06-06-2014)

• Add support for utf-8 values in HTTP headers
• Allow to use custom response class instead of HttpResponse
• Use MultiDict for client request headers
• Use MultiDict for server request/response headers
• Store response headers in ClientResponse.headers attribute
• Get rid of timeout parameter in aiohttp.client API
• Exceptions refactoring

0.7.3 (05-20-2014)

• Simple HTTP proxy support.

0.7.2 (05-14-2014)

• Get rid of __del__ methods
• Use ResourceWarning instead of logging warning record.

0.7.1 (04-28-2014)

• Do not unquote client request urls.
• Allow multple waiters on transport drain.
• Do not return client connection to pool in case of exceptions.
• Rename SocketConnector to TCPConnector and UnixSocketConnector to UnixConnector.

0.7.0 (04-16-2014)

• Connection flow control.
• Http client session/connection pool refactoring.
• Better handling for bad server requests.

0.6.5 (03-29-2014)

• Added client session reuse timeout.
• Better client request cancellation support.
• Better handling responses without content length.
• Added HttpClient verify_ssl parameter support.

0.6.4 (02-27-2014)

• Log content-length missing warning only for put and post requests.

0.6.3 (02-27-2014)

• Better support for server exit.
• Read response body until eof if content-length is not defined #14

0.6.2 (02-18-2014)

• Fix trailing char in allowed_methods.
• Start slow request timer for first request.

0.6.1 (02-17-2014)

• Added utility method HttpResponse.read_and_close()
• Added slow request timeout.
• Enable socket SO_KEEPALIVE if available. (@polymorphm)

0.6.0 (02-12-2014)

• Better handling for process exit.

0.5.0 (01-29-2014)

• Allow to use custom HttpRequest client class.
• Use gunicorn keepalive setting for async worker.
• Log leaking responses.
• python 3.4 compatibility

0.4.4 (11-15-2013)

• Resolve only AF_INET family, because it is not clear how to pass extra info to asyncio.

0.4.3 (11-15-2013)

• Allow to wait completion of request with HttpResponse.wait_for_close()

0.4.2 (11-14-2013)

• Handle exception in client request stream.
• Prevent host resolving for each client request.

0.4.1 (11-12-2013)

• Added client support for expect: 100-continue header.

0.4 (11-06-2013)

• Added custom wsgi application close procedure
• Fixed concurrent host failure in HttpClient

0.3 (11-04-2013)

• Added PortMapperWorker
• Added HttpClient
• Added tcp connection timeout to http client
• Better client connection errors handling
• Gracefully handle process exit

0.2

• Fix packaging