aiohttp

http client/server for asyncio

https://travis-ci.org/KeepSafe/aiohttp.svg?branch=master

https://codecov.io/gh/KeepSafe/aiohttp/branch/master/graph/badge.svg

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:

import aiohttp
import asyncio

async def fetch(session, url):
    with aiohttp.Timeout(10, loop=session.loop):
        async with session.get(url) as response:
            return await response.text()

async def main(loop):
    async with aiohttp.ClientSession(loop=loop) as session:
        html = await fetch(session, 'http://python.org')
        print(html)

if __name__ == '__main__':
    loop = asyncio.get_event_loop()
    loop.run_until_complete(main(loop))

Server

This is simple usage example:

from aiohttp import web

async def handle(request):
    name = request.match_info.get('name', "Anonymous")
    text = "Hello, " + name
    return web.Response(text=text)

async def wshandler(request):
    ws = web.WebSocketResponse()
    await ws.prepare(request)

    async for msg in ws:
        if msg.type == web.MsgType.text:
            ws.send_str("Hello, {}".format(msg.data))
        elif msg.type == web.MsgType.binary:
            ws.send_bytes(msg.data)
        elif msg.type == web.MsgType.close:
            break

    return ws


app = web.Application()
app.router.add_get('/echo', wshandler)
app.router.add_get('/', handle)
app.router.add_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()

should be replaced by:

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

Optionally you may install the cChardet and aiodns libraries (highly recommended for sake of speed).

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

1.1.0 (2016-11-03)

Drop deprecated WSClientDisconnectedError (BACKWARD INCOMPATIBLE)
Use yarl.URL in client API. The change is 99% backward compatible but ClientResponse.url is an yarl.URL instance now. #1217
Close idle keep-alive connections on shutdown #1222
Modify regex in AccessLogger to accept underscore and numbers #1225
Use yarl.URL in web server API. web.Request.rel_url and web.Request.url are added. URLs and templates are percent-encoded now. #1224
Accept yarl.URL by server redirections #1278
Return yarl.URL by .make_url() testing utility #1279
Properly format IPv6 addresses by aiohttp.web.run_app #1139
Use yarl.URL by server API #1288
- Introduce resource.url_for(), deprecate resource.url().
- Implement StaticResource.
- Inherit SystemRoute from AbstractRoute
- Drop old-style routes: Route, PlainRoute, DynamicRoute, StaticRoute, ResourceAdapter.
Revert resp.url back to str, introduce resp.url_obj #1292
Raise ValueError if BasicAuth login has a “:” character #1307
Fix bug when ClientRequest send payload file with opened as open(‘filename’, ‘r+b’) #1306
Enhancement to AccessLogger (pass extra dict) #1303
Show more verbose message on import errors #1319
Added save and load functionality for CookieJar #1219
Added option on StaticRoute to follow symlinks #1299
Force encoding of application/json content type to utf-8 #1339
Fix invalid invocations of errors.LineTooLong #1335
Websockets: Stop async for iteration when connection is closed #1144
Ensure TestClient HTTP methods return a context manager #1318
Raise ClientDisconnectedError to FlowControlStreamReader read function if ClientSession object is closed by client when reading data. #1323
Document deployment without Gunicorn #1120
Add deprecation warning for MD5 and SHA1 digests when used for fingerprint of site certs in TCPConnector. #1186
Implement sub-applications #1301
Don’t inherit web.Request from dict but implement MutableMapping protocol.
Implement frozen signals
Don’t inherit web.Application from dict but implement MutableMapping protocol.
Support freezing for web applications
Accept access_log parameter in web.run_app, use None to disable logging
Don’t flap tcp_cork and tcp_nodelay in regular request handling. tcp_nodelay is still enabled by default.
Improve performance of web server by removing premature computing of Content-Type if the value was set by web.Response constructor.

While the patch boosts speed of trivial web.Response(text=’OK’, content_type=’text/plain) very well please don’t expect significant boost of your application – a couple DB requests and business logic is still the main bottleneck.
Boost performance by adding a custom time service #1350
Extend ClientResponse with content_type and charset properties like in web.Request. #1349
Disable aiodns by default #559
Don’t flap tcp_cork in client code, use TCP_NODELAY mode by default.
Implement web.Request.clone() #1361

Metadata

Release files for aiohttp 1.1.0

For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.

Source distribution (sdist)

Source distribution for aiohttp 1.1.0
File	Size	Uploaded
aiohttp-1.1.0.tar.gz	508.5 kB	Nov 3, 2016	Details

Built distributions (wheels)

Table of built distributions (wheels) for aiohttp 1.1.0
File	Interpreter	ABI	Platform	Reset
aiohttp-1.1.0-cp35-cp35m-win_amd64.whl 136.4 kB Nov 3, 2016	CPython 3.5	CPython 3.5 pymalloc	Windows x86-64	Details
aiohttp-1.1.0-cp35-cp35m-win32.whl 135.1 kB Nov 3, 2016	CPython 3.5	CPython 3.5 pymalloc	Windows x86-32	Details
aiohttp-1.1.0-cp35-cp35m-manylinux1_x86_64.whl 153.2 kB Nov 3, 2016	CPython 3.5	CPython 3.5 pymalloc	Linux glibc 2.5+ x86-64	Details
aiohttp-1.1.0-cp35-cp35m-manylinux1_i686.whl 150.6 kB Nov 3, 2016	CPython 3.5	CPython 3.5 pymalloc	Linux glibc 2.5+ x86-32	Details
aiohttp-1.1.0-cp34-cp34m-win_amd64.whl 134.3 kB Nov 3, 2016	CPython 3.4	CPython 3.4 pymalloc	Windows x86-64	Details
aiohttp-1.1.0-cp34-cp34m-win32.whl 133.9 kB Nov 3, 2016	CPython 3.4	CPython 3.4 pymalloc	Windows x86-32	Details
aiohttp-1.1.0-cp34-cp34m-manylinux1_x86_64.whl 153.4 kB Nov 3, 2016	CPython 3.4	CPython 3.4 pymalloc	Linux glibc 2.5+ x86-64	Details
aiohttp-1.1.0-cp34-cp34m-manylinux1_i686.whl 150.7 kB Nov 3, 2016	CPython 3.4	CPython 3.4 pymalloc	Linux glibc 2.5+ x86-32	Details

Total release size: 1.7 MB

Release files / aiohttp-1.1.0.tar.gz

Download URL	aiohttp-1.1.0.tar.gz
Size	508.5 kB
Tags	Source
SHA-256 checksum How to use checksums	`7a33afa92c5eab20252aba4aa184b6ec206bb718fcb51d1d0566d91f8b0dc9be`
BLAKE2b-256 checksum How to use checksums	`3f7e7035a96a1d5a68636d47ea48d0abda0e25994ef092167fd5dd12fe380cde`
Upload date	Nov 3, 2016
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Release files / aiohttp-1.1.0-cp35-cp35m-win_amd64.whl

Download URL	aiohttp-1.1.0-cp35-cp35m-win_amd64.whl
Size	136.4 kB
Tags	CPython 3.5 CPython 3.5 pymalloc Windows x86-64
SHA-256 checksum How to use checksums	`1112a1b7b45f000a08f497fdff0ff97abcb02a2ef28dc19038af98261426a1d0`
BLAKE2b-256 checksum How to use checksums	`663e549cdc5bdf6d444001b3f9e450226d3e878eb1b392182342f53718d07d99`
Upload date	Nov 3, 2016
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Release files / aiohttp-1.1.0-cp35-cp35m-win32.whl

Download URL	aiohttp-1.1.0-cp35-cp35m-win32.whl
Size	135.1 kB
Tags	CPython 3.5 CPython 3.5 pymalloc Windows x86-32
SHA-256 checksum How to use checksums	`c5144a89ed314d5435434294ca5bd4cd2a24c791158fb36695cdfb8970489209`
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Release files / aiohttp-1.1.0-cp35-cp35m-manylinux1_x86_64.whl

Download URL	aiohttp-1.1.0-cp35-cp35m-manylinux1_x86_64.whl
Size	153.2 kB
Tags	CPython 3.5 CPython 3.5 pymalloc Linux glibc 2.5+ x86-64
SHA-256 checksum How to use checksums	`c05b95448deabdba71c1c28f778479f4c63140345f5635946f35b3211087f2b3`
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Release files / aiohttp-1.1.0-cp35-cp35m-manylinux1_i686.whl

Download URL	aiohttp-1.1.0-cp35-cp35m-manylinux1_i686.whl
Size	150.6 kB
Tags	CPython 3.5 CPython 3.5 pymalloc Linux glibc 2.5+ x86-32
SHA-256 checksum How to use checksums	`cf5f6bd15edbfc21daf03e7d8eaa6fb452c05500b534b0999fade28a65b15973`
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Release files / aiohttp-1.1.0-cp34-cp34m-win_amd64.whl

Download URL	aiohttp-1.1.0-cp34-cp34m-win_amd64.whl
Size	134.3 kB
Tags	CPython 3.4 CPython 3.4 pymalloc Windows x86-64
SHA-256 checksum How to use checksums	`20ca5752c5cd141f56ede1bc2817a7c2046af2f3b05d84f5510e4ffcb3e1b66b`
BLAKE2b-256 checksum How to use checksums	`33f3828906ed9005dd965a988f6d94ad2dc13c92977f96c681416eba272e501a`
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Release files / aiohttp-1.1.0-cp34-cp34m-win32.whl

Download URL	aiohttp-1.1.0-cp34-cp34m-win32.whl
Size	133.9 kB
Tags	CPython 3.4 CPython 3.4 pymalloc Windows x86-32
SHA-256 checksum How to use checksums	`ab005bbbfa8f0a980ecebcd8a632fdc6407298f1562f74cf01e566c0fabaf3aa`
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Release files / aiohttp-1.1.0-cp34-cp34m-manylinux1_x86_64.whl

Download URL	aiohttp-1.1.0-cp34-cp34m-manylinux1_x86_64.whl
Size	153.4 kB
Tags	CPython 3.4 CPython 3.4 pymalloc Linux glibc 2.5+ x86-64
SHA-256 checksum How to use checksums	`1276040895ab085827daa2c5a667caffce3531299a7679fda92ed50039b7d188`
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Release files / aiohttp-1.1.0-cp34-cp34m-manylinux1_i686.whl

Download URL	aiohttp-1.1.0-cp34-cp34m-manylinux1_i686.whl
Size	150.7 kB
Tags	CPython 3.4 CPython 3.4 pymalloc Linux glibc 2.5+ x86-32
SHA-256 checksum How to use checksums	`06d751fbe6e50990df022babc5b289508da02af40045cd2cef0a44666bb7112a`
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