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aiohttp 0.21.2

pip install aiohttp==0.21.2

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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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.

Getting started

Client

To retrieve something from the web:

importaiohttpimportasyncioasync deffetch(session, url): with aiohttp.Timeout(10): async with session.get(url) as response: return await response.text()if __name__ == '__main__': loop = asyncio.get_event_loop() with aiohttp.ClientSession(loop=loop) as session: html = loop.run_until_complete( fetch(session, 'http://python.org')) print(html)

Server

This is simple usage example:

fromaiohttpimport webasync defhandle(request): name = request.match_info.get('name', "Anonymous") text = "Hello, " + name return web.Response(body=text.encode('utf-8'))async defwshandler(request): ws = web.WebSocketResponse() await ws.prepare(request) async for msg in ws: if msg.tp == web.MsgType.text: ws.send_str("Hello, {}".format(msg.data)) elif msg.tp == web.MsgType.binary: ws.send_bytes(msg.data) elif msg.tp == web.MsgType.close: break return wsapp = web.Application()app.router.add_route('GET', '/echo', wshandler)app.router.add_route('GET', '/{name}', handle)web.run_app(app)

Note: examples are written for Python 3.5+ and utilize PEP-492 aka async/await. If you are using Python 3.4 please replace await with yield from and async def with @coroutine e.g.:

async def coro(...):
 ret = await f()

shoud be replaced by:

@asyncio.coroutine
def coro(...):
 ret = yield from f()

Documentation

http://aiohttp.readthedocs.org/

Discussion list

aio-libs google group: https://groups.google.com/forum/#!forum/aio-libs

Requirements

Optionally you may install cChardet library: https://pypi.python.org/pypi/cchardet/1.0.0

License

aiohttp is offered under the Apache 2 license.

Source code

The latest developer version is available in a github repository: https://github.com/KeepSafe/aiohttp

Benchmarks

If you are interested in by efficiency, AsyncIO community maintains a list of benchmarks on the official wiki: https://github.com/python/asyncio/wiki/Benchmarks

CHANGES

0.21.2 (02-16-2016)

  • Fix a regression: support for handling ~/path in static file routes was broken #782

0.21.1 (02-10-2016)

  • Make new resources classes public #767

  • Add router.resources() view

  • Fix cmd-line parameter names in doc

0.21.0 (02-04-2016)

  • Introduce on_shutdown signal #722

  • Implement raw input headers #726

  • Implement web.run_app utility function #734

  • Introduce on_cleanup signal

  • Deprecate Application.finish() / Application.register_on_finish() in favor of on_cleanup.

  • Get rid of bare aiohttp.request(), aiohttp.get() and family in docs #729

  • Deprecate bare aiohttp.request(), aiohttp.get() and family #729

  • Refactor keep-alive support #737:

    • Enable keepalive for HTTP 1.0 by default

    • Disable it for HTTP 0.9 (who cares about 0.9, BTW?)

    • For keepalived connections

      • Send Connection: keep-alive for HTTP 1.0 only

      • don’t send Connection header for HTTP 1.1

    • For non-keepalived connections

      • Send Connection: close for HTTP 1.1 only

      • don’t send Connection header for HTTP 1.0

  • Add version parameter to ClientSession constructor, deprecate it for session.request() and family #736

  • Enable access log by default #735

  • Deprecate app.router.register_route() (the method was not documented intentionally BTW).

  • Deprecate app.router.named_routes() in favor of app.router.named_resources()

  • route.add_static accepts pathlib.Path now #743

  • Add command line support: $ python -m aiohttp.web package.main #740

  • FAQ section was added to docs. Enjoy and fill free to contribute new topics

  • Add async context manager support to ClientSession

  • Document ClientResponse’s host, method, url properties

  • Use CORK/NODELAY in client API #748

  • ClientSession.close and Connector.close are coroutines now

  • Close client connection on exception in ClientResponse.release()

  • Allow to read multipart parts without content-length specified #750

  • Add support for unix domain sockets to gunicorn worker #470

  • Add test for default Expect handler #601

  • Add the first demo project

  • Rename loader keyword argument in web.Request.json method. #646

  • Add local socket binding for TCPConnector #678

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