http client/server for asyncio
http client/server for asyncio
Python >= 3.3
aiohttp is offered under the BSD license.
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), timeout=None, compress=None, chunked=None, expect100=False, connector=None, read_until_eof=True, 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
timeout: (optional) Float describing the timeout of the request
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.SocketConnector instance to support connection pooling and session cookies.
read_until_eof: Read response until eof if response does not have Content-Length header.
loop: Optional event loop.
Paster configuration example:
[server:main] use = egg:gunicorn#main host = 0.0.0.0 port = 8080 worker_class = aiohttp.worker.AsyncGunicornWorker
Connection flow control.
Http client session/connection pool refactoring.
Better handling for bad server requests.
Added client session reuse timeout.
Better client request cancellation support.
Better handling responses without content length.
Added HttpClient verify_ssl parameter support.
Log content-length missing warning only for put and post requests.
Better support for server exit.
Read response body until eof if content-length is not defined #14
Fix trailing char in allowed_methods.
Start slow request timer for first request.
Added utility method HttpResponse.read_and_close()
Added slow request timeout.
Enable socket SO_KEEPALIVE if available. (@polymorphm)
Better handling for process exit.
Allow to use custom HttpRequest client class.
Use gunicorn keepalive setting for async worker.
Log leaking responses.
python 3.4 compatibility
Resolve only AF_INET family, because it is not clear how to pass extra info to asyncio.
Allow to wait completion of request with HttpResponse.wait_for_close()
Handle exception in client request stream.
Prevent host resolving for each client request.
Added client support for expect: 100-continue header.
Added custom wsgi application close procedure
Fixed concurrent host failure in HttpClient
Added tcp connection timeout to http client
Better client connection errors handling
Gracefully handle process exit
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