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aiohttp 0.8.0

pip install aiohttp==0.8.0

Newer version available (3.14.1)

Released:

http client/server for asyncio

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Project description

http client/server for asyncio

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Requirements

License

aiohttp is offered under the BSD license.

Getting started

To retrieve something from the web:

import aiohttp

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

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_and_close()
print(body)

The signature of request is the following:

request(method, url, *,
 params=None,
 data=None,
 headers=None,
 cookies=None,
 files=None,
 auth=None,
 allow_redirects=True,
 max_redirects=10,
 encoding='utf-8',
 version=(1, 1),
 compress=None,
 chunked=None,
 expect100=False,
 connector=None,
 read_until_eof=True,
 request_class=None,
 response_class=None,
 loop=None
)

It constructs and sends a request. It returns response object. Parameters are explained as follow:

  • method: HTTP method

  • url: Request url

  • params: (optional) Dictionary or bytes to be sent in the query string of the new request

  • data: (optional) Dictionary, bytes, or file-like object to send in the body of the request

  • headers: (optional) Dictionary of HTTP Headers to send with the request

  • cookies: (optional) Dict object to send with the request

  • files: (optional) Dictionary of ‘name’: file-like-objects for multipart encoding upload

  • auth: (optional) Auth tuple to enable Basic HTTP Auth

  • allow_redirects: (optional) Boolean. Set to True if POST/PUT/DELETE redirect following is allowed.

  • compress: Boolean. Set to True if request has to be compressed with deflate encoding.

  • chunked: Boolean or Integer. Set to chunk size for chunked transfer encoding.

  • expect100: Boolean. Expect 100-continue response from server.

  • connector: aiohttp.connector.BaseConnector instance to support connection pooling and session cookies.

  • read_until_eof: Read response until eof if response does not have Content-Length header.

  • request_class: Custom Request class implementation.

  • response_class: Custom Response class implementation.

  • loop: Optional event loop.

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

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

Gunicorn worker

Paster configuration example:

[server:main]
use = egg:gunicorn#main
host = 0.0.0.0
port = 8080
worker_class = aiohttp.worker.AsyncGunicornWorker

CHANGES

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

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