http client/server for asyncio
Requirements
Python >= 3.3
License
aiohttp is offered under the Apache 2 license.
Documentation
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 = 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
0.10.2 (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 400: 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
5 maintainers
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