3.4.4 (2018-09-05)

Fix installation from sources when compiling toolkit is not available (#3241)

3.4.3 (2018-09-04)

Add app.pre_frozen state to properly handle startup signals in sub-applications. (#3237)

3.4.2 (2018-09-01)

Fix iter_chunks type annotation (#3230)

3.4.1 (2018-08-28)

Fix empty header parsing regression. (#3218)
Fix BaseRequest.raw_headers doc. (#3215)
Fix documentation building on ReadTheDocs (#3221)

3.4.0 (2018-08-25)

Features

Add type hints (#3049)
Add raise_for_status request parameter (#3073)
Add type hints to HTTP client (#3092)
Minor server optimizations (#3095)
Preserve the cause when HTTPException is raised from another exception. (#3096)
Add close_boundary option in MultipartWriter.write method. Support streaming (#3104)
Added a remove_slash option to the normalize_path_middleware factory. (#3173)
The class AbstractRouteDef is importable from aiohttp.web. (#3183)

Bugfixes

Prevent double closing when client connection is released before the last data_received() callback. (#3031)
Make redirect with normalize_path_middleware work when using url encoded paths. (#3051)
Postpone web task creation to connection establishment. (#3052)
Fix sock_read timeout. (#3053)
When using a server-request body as the data= argument of a client request, iterate over the content with readany instead of readline to avoid Line too long errors. (#3054)
fix UrlDispatcher has no attribute add_options, add web.options (#3062)
correct filename in content-disposition with multipart body (#3064)
Many HTTP proxies has buggy keepalive support. Let's not reuse connection but close it after processing every response. (#3070)
raise 413 "Payload Too Large" rather than raising ValueError in request.post() Add helpful debug message to 413 responses (#3087)
Fix StreamResponse equality, now that they are MutableMapping objects. (#3100)
Fix server request objects comparison (#3116)
Do not hang on 206 Partial Content response with Content-Encoding: gzip (#3123)
Fix timeout precondition checkers (#3145)

Improved Documentation

Add a new FAQ entry that clarifies that you should not reuse response objects in middleware functions. (#3020)
Add FAQ section "Why is creating a ClientSession outside of an event loop dangerous?" (#3072)
Fix link to Rambler (#3115)
Fix TCPSite documentation on the Server Reference page. (#3146)
Fix documentation build configuration file for Windows. (#3147)
Remove no longer existing lingering_timeout parameter of Application.make_handler from documentation. (#3151)
Mention that app.make_handler is deprecated, recommend to use runners API instead. (#3157)

Deprecations and Removals

Drop loop.current_task() from helpers.current_task() (#2826)
Drop reader parameter from request.multipart(). (#3090)

3.3.2 (2018-06-12)

Many HTTP proxies has buggy keepalive support. Let's not reuse connection but close it after processing every response. (#3070)
Provide vendor source files in tarball (#3076)

3.3.1 (2018-06-05)

Fix sock_read timeout. (#3053)
When using a server-request body as the data= argument of a client request, iterate over the content with readany instead of readline to avoid Line too long errors. (#3054)

3.3.0 (2018-06-01)

Features

Raise ConnectionResetError instead of CancelledError on trying to write to a closed stream. (#2499)
Implement ClientTimeout class and support socket read timeout. (#2768)
Enable logging when aiohttp.web is used as a program (#2956)
Add canonical property to resources (#2968)
Forbid reading response BODY after release (#2983)
Implement base protocol class to avoid a dependency from internal asyncio.streams.FlowControlMixin (#2986)
Cythonize @helpers.reify, 5% boost on macro benchmark (#2995)
Optimize HTTP parser (#3015)
Implement runner.addresses property. (#3036)
Use bytearray instead of a list of bytes in websocket reader. It improves websocket message reading a little. (#3039)
Remove heartbeat on closing connection on keepalive timeout. The used hack violates HTTP protocol. (#3041)
Limit websocket message size on reading to 4 MB by default. (#3045)

Bugfixes

Don't reuse a connection with the same URL but different proxy/TLS settings (#2981)
When parsing the Forwarded header, the optional port number is now preserved. (#3009)

Improved Documentation

Make Change Log more visible in docs (#3029)
Make style and grammar improvements on the FAQ page. (#3030)
Document that signal handlers should be async functions since aiohttp 3.0 (#3032)

Deprecations and Removals

Deprecate custom application's router. (#3021)

Misc

#3008, #3011

3.2.1 (2018-05-10)

Don't reuse a connection with the same URL but different proxy/TLS settings (#2981)

3.2.0 (2018-05-06)

Features

Raise TooManyRedirects exception when client gets redirected too many times instead of returning last response. (#2631)
Extract route definitions into separate web_routedef.py file (#2876)
Raise an exception on request body reading after sending response. (#2895)
ClientResponse and RequestInfo now have real_url property, which is request url without fragment part being stripped (#2925)
Speed up connector limiting (#2937)
Added and links property for ClientResponse object (#2948)
Add request.config_dict for exposing nested applications data. (#2949)
Speed up HTTP headers serialization, server micro-benchmark runs 5% faster now. (#2957)
Apply assertions in debug mode only (#2966)

Bugfixes

expose property app for TestClient (#2891)
Call on_chunk_sent when write_eof takes as a param the last chunk (#2909)
A closing bracket was added to __repr__ of resources (#2935)
Fix compression of FileResponse (#2942)
Fixes some bugs in the limit connection feature (#2964)

Improved Documentation

Drop async_timeout usage from documentation for client API in favor of timeout parameter. (#2865)
Improve Gunicorn logging documentation (#2921)
Replace multipart writer .serialize() method with .write() in documentation. (#2965)

Deprecations and Removals

Deprecate Application.make_handler() (#2938)

Misc

#2958

3.1.3 (2018-04-12)

Fix cancellation broadcast during DNS resolve (#2910)

3.1.2 (2018-04-05)

Make LineTooLong exception more detailed about actual data size (#2863)
Call on_chunk_sent when write_eof takes as a param the last chunk (#2909)

3.1.1 (2018-03-27)

Support asynchronous iterators (and asynchronous generators as well) in both client and server API as request / response BODY payloads. (#2802)

3.1.0 (2018-03-21)

Welcome to aiohttp 3.1 release.

This is an incremental release, fully backward compatible with aiohttp 3.0.

But we have added several new features.

The most visible one is app.add_routes() (an alias for existing app.router.add_routes(). The addition is very important because all aiohttp docs now uses app.add_routes() call in code snippets. All your existing code still do register routes / resource without any warning but you've got the idea for a favorite way: noisy app.router.add_get() is replaced by app.add_routes().

The library does not make a preference between decorators:

routes = web.RouteTableDef()

@routes.get('/')
async def hello(request):
    return web.Response(text="Hello, world")

app.add_routes(routes)

and route tables as a list:

async def hello(request):
    return web.Response(text="Hello, world")

app.add_routes([web.get('/', hello)])

Both ways are equal, user may decide basing on own code taste.

Also we have a lot of minor features, bug fixes and documentation updates, see below.

Features

Relax JSON content-type checking in the ClientResponse.json() to allow "application/xxx+json" instead of strict "application/json". (#2206)
Bump C HTTP parser to version 2.8 (#2730)
Accept a coroutine as an application factory in web.run_app and gunicorn worker. (#2739)
Implement application cleanup context (app.cleanup_ctx property). (#2747)
Make writer.write_headers a coroutine. (#2762)
Add tracking signals for getting request/response bodies. (#2767)
Deprecate ClientResponseError.code in favor of .status to keep similarity with response classes. (#2781)
Implement app.add_routes() method. (#2787)
Implement web.static() and RouteTableDef.static() API. (#2795)
Install a test event loop as default by asyncio.set_event_loop(). The change affects aiohttp test utils but backward compatibility is not broken for 99.99% of use cases. (#2804)
Refactor ClientResponse constructor: make logically required constructor arguments mandatory, drop _post_init() method. (#2820)
Use app.add_routes() in server docs everywhere (#2830)
Websockets refactoring, all websocket writer methods are converted into coroutines. (#2836)
Provide Content-Range header for Range requests (#2844)

Bugfixes

Fix websocket client return EofStream. (#2784)
Fix websocket demo. (#2789)
Property BaseRequest.http_range now returns a python-like slice when requesting the tail of the range. It's now indicated by a negative value in range.start rather then in range.stop (#2805)
Close a connection if an unexpected exception occurs while sending a request (#2827)
Fix firing DNS tracing events. (#2841)

Improved Documentation

Document behavior when cchardet detects encodings that are unknown to Python. (#2732)
Add diagrams for tracing request life style. (#2748)
Drop removed functionality for passing StreamReader as data at client side. (#2793)

3.0.9 (2018-03-14)

Close a connection if an unexpected exception occurs while sending a request (#2827)

3.0.8 (2018-03-12)

Use asyncio.current_task() on Python 3.7 (#2825)

3.0.7 (2018-03-08)

Fix SSL proxy support by client. (#2810)
Restore an imperative check in setup.py for python version. The check works in parallel to environment marker. As effect an error about unsupported Python versions is raised even on outdated systems with very old setuptools version installed. (#2813)

3.0.6 (2018-03-05)

Add _reuse_address and _reuse_port to web_runner.TCPSite.__slots__. (#2792)

3.0.5 (2018-02-27)

Fix InvalidStateError on processing a sequence of two RequestHandler.data_received calls on web server. (#2773)

3.0.4 (2018-02-26)

Fix IndexError in HTTP request handling by server. (#2752)
Fix MultipartWriter.append* no longer returning part/payload. (#2759)

3.0.3 (2018-02-25)

Relax attrs dependency to minimal actually supported version 17.0.3 The change allows to avoid version conflicts with currently existing test tools.

3.0.2 (2018-02-23)

Security Fix

Prevent Windows absolute URLs in static files. Paths like /static/D:\path and /static/\\hostname\drive\path are forbidden.

3.0.1

Technical release for fixing distribution problems.

3.0.0 (2018-02-12)

Features

Speed up the PayloadWriter.write method for large request bodies. (#2126)
StreamResponse and Response are now MutableMappings. (#2246)
ClientSession publishes a set of signals to track the HTTP request execution. (#2313)
Content-Disposition fast access in ClientResponse (#2455)
Added support to Flask-style decorators with class-based Views. (#2472)
Signal handlers (registered callbacks) should be coroutines. (#2480)
Support async with test_client.ws_connect(...) (#2525)
Introduce site and application runner as underlying API for web.run_app implementation. (#2530)
Only quote multipart boundary when necessary and sanitize input (#2544)
Make the aiohttp.ClientResponse.get_encoding method public with the processing of invalid charset while detecting content encoding. (#2549)
Add optional configurable per message compression for ClientWebSocketResponse and WebSocketResponse. (#2551)
Add hysteresis to StreamReader to prevent flipping between paused and resumed states too often. (#2555)
Support .netrc by trust_env (#2581)
Avoid to create a new resource when adding a route with the same name and path of the last added resource (#2586)
MultipartWriter.boundary is str now. (#2589)
Allow a custom port to be used by TestServer (and associated pytest fixtures) (#2613)
Add param access_log_class to web.run_app function (#2615)
Add ssl parameter to client API (#2626)
Fixes performance issue introduced by #2577. When there are no middlewares installed by the user, no additional and useless code is executed. (#2629)
Rename PayloadWriter to StreamWriter (#2654)
New options reuse_port, reuse_address are added to run_app and TCPSite. (#2679)
Use custom classes to pass client signals parameters (#2686)
Use attrs library for data classes, replace namedtuple. (#2690)
Pytest fixtures renaming, add aiohttp_ prefix (#2578)
Add aiohttp- prefix for pytest-aiohttp command line parameters (#2578)

Bugfixes

Correctly process upgrade request from server to HTTP2. aiohttp does not support HTTP2 yet, the protocol is not upgraded but response is handled correctly. (#2277)
Fix ClientConnectorSSLError and ClientProxyConnectionError for proxy connector (#2408)
Fix connector convert OSError to ClientConnectorError (#2423)
Fix connection attempts for multiple dns hosts (#2424)
Fix writing to closed transport by raising asyncio.CancelledError (#2499)
Fix warning in ClientSession.__del__ by stopping to try to close it. (#2523)
Fixed race-condition for iterating addresses from the DNSCache. (#2620)
Fix default value of access_log_format argument in web.run_app (#2649)
Freeze sub-application on adding to parent app (#2656)
Do percent encoding for .url_for() parameters (#2668)
Correctly process request start time and multiple request/response headers in access log extra (#2641)

Improved Documentation

Improve tutorial docs, using literalinclude to link to the actual files. (#2396)
Small improvement docs: better example for file uploads. (#2401)
Rename from_env to trust_env in client reference. (#2451)
Fixed mistype in Proxy Support section where trust_env parameter was used in session.get("http://python.org", trust_env=True) method instead of aiohttp.ClientSession constructor as follows: aiohttp.ClientSession(trust_env=True). (#2688)
Fix issue with unittest example not compiling in testing docs. (#2717)

Deprecations and Removals

Simplify HTTP pipelining implementation (#2109)
Drop StreamReaderPayload and DataQueuePayload. (#2257)
Drop md5 and sha1 finger-prints (#2267)
Drop WSMessage.tp (#2321)
Drop Python 3.4 and Python 3.5.0, 3.5.1, 3.5.2. Minimal supported Python versions are 3.5.3 and 3.6.0. yield from is gone, use async/await syntax. (#2343)
Drop aiohttp.Timeout and use async_timeout.timeout instead. (#2348)
Drop resolve param from TCPConnector. (#2377)
Add DeprecationWarning for returning HTTPException (#2415)
send_str(), send_bytes(), send_json(), ping() and pong() are genuine async functions now. (#2475)
Drop undocumented app.on_pre_signal and app.on_post_signal. Signal handlers should be coroutines, support for regular functions is dropped. (#2480)
StreamResponse.drain() is not a part of public API anymore, just use await StreamResponse.write(). StreamResponse.write is converted to async function. (#2483)
Drop deprecated slow_request_timeout param and **kwargs` from RequestHandler. (#2500)
Drop deprecated resource.url(). (#2501)
Remove %u and %l format specifiers from access log format. (#2506)
Drop deprecated request.GET property. (#2547)
Simplify stream classes: drop ChunksQueue and FlowControlChunksQueue, merge FlowControlStreamReader functionality into StreamReader, drop FlowControlStreamReader name. (#2555)
Do not create a new resource on router.add_get(..., allow_head=True) (#2585)
Drop access to TCP tuning options from PayloadWriter and Response classes (#2604)
Drop deprecated encoding parameter from client API (#2606)
Deprecate verify_ssl, ssl_context and fingerprint parameters in client API (#2626)
Get rid of the legacy class StreamWriter. (#2651)
Forbid non-strings in resource.url_for() parameters. (#2668)
Deprecate inheritance from ClientSession and web.Application and custom user attributes for ClientSession, web.Request and web.Application (#2691)
Drop resp = await aiohttp.request(...) syntax for sake of async with aiohttp.request(...) as resp:. (#2540)
Forbid synchronous context managers for ClientSession and test server/client. (#2362)

Misc

#2552

2.3.10 (2018-02-02)

Fix 100% CPU usage on HTTP GET and websocket connection just after it (#1955)
Patch broken ssl.match_hostname() on Python<3.7 (#2674)

2.3.9 (2018-01-16)

Fix colon handing in path for dynamic resources (#2670)

2.3.8 (2018-01-15)

Do not use yarl.unquote internal function in aiohttp. Fix incorrectly unquoted path part in URL dispatcher (#2662)
Fix compatibility with yarl==1.0.0 (#2662)

2.3.7 (2017-12-27)

Fixed race-condition for iterating addresses from the DNSCache. (#2620)
Fix docstring for request.host (#2591)
Fix docstring for request.remote (#2592)

2.3.6 (2017-12-04)

Correct request.app context (for handlers not just middlewares). (#2577)

2.3.5 (2017-11-30)

Fix compatibility with pytest 3.3+ (#2565)

2.3.4 (2017-11-29)

Make request.app point to proper application instance when using nested applications (with middlewares). (#2550)
Change base class of ClientConnectorSSLError to ClientSSLError from ClientConnectorError. (#2563)
Return client connection back to free pool on error in connector.connect(). (#2567)

2.3.3 (2017-11-17)

Having a ; in Response content type does not assume it contains a charset anymore. (#2197)
Use getattr(asyncio, 'async') for keeping compatibility with Python 3.7. (#2476)
Ignore NotImplementedError raised by set_child_watcher from uvloop. (#2491)
Fix warning in ClientSession.__del__ by stopping to try to close it. (#2523)
Fixed typo's in Third-party libraries page. And added async-v20 to the list (#2510)

2.3.2 (2017-11-01)

Fix passing client max size on cloning request obj. (#2385)
Fix ClientConnectorSSLError and ClientProxyConnectionError for proxy connector. (#2408)
Drop generated _http_parser shared object from tarball distribution. (#2414)
Fix connector convert OSError to ClientConnectorError. (#2423)
Fix connection attempts for multiple dns hosts. (#2424)
Fix ValueError for AF_INET6 sockets if a preexisting INET6 socket to the aiohttp.web.run_app function. (#2431)
_SessionRequestContextManager closes the session properly now. (#2441)
Rename from_env to trust_env in client reference. (#2451)

2.3.1 (2017-10-18)

Relax attribute lookup in warning about old-styled middleware (#2340)

2.3.0 (2017-10-18)

Features

Add SSL related params to ClientSession.request (#1128)
Make enable_compression work on HTTP/1.0 (#1828)
Deprecate registering synchronous web handlers (#1993)
Switch to multidict 3.0. All HTTP headers preserve casing now but compared in case-insensitive way. (#1994)
Improvement for normalize_path_middleware. Added possibility to handle URLs with query string. (#1995)
Use towncrier for CHANGES.txt build (#1997)
Implement trust_env=True param in ClientSession. (#1998)
Added variable to customize proxy headers (#2001)
Implement router.add_routes and router decorators. (#2004)
Deprecated BaseRequest.has_body in favor of BaseRequest.can_read_body Added BaseRequest.body_exists attribute that stays static for the lifetime of the request (#2005)
Provide BaseRequest.loop attribute (#2024)
Make _CoroGuard awaitable and fix ClientSession.close warning message (#2026)
Responses to redirects without Location header are returned instead of raising a RuntimeError (#2030)
Added get_client, get_server, setUpAsync and tearDownAsync methods to AioHTTPTestCase (#2032)
Add automatically a SafeChildWatcher to the test loop (#2058)
add ability to disable automatic response decompression (#2110)
Add support for throttling DNS request, avoiding the requests saturation when there is a miss in the DNS cache and many requests getting into the connector at the same time. (#2111)
Use request for getting access log information instead of message/transport pair. Add RequestBase.remote property for accessing to IP of client initiated HTTP request. (#2123)
json() raises a ContentTypeError exception if the content-type does not meet the requirements instead of raising a generic ClientResponseError. (#2136)
Make the HTTP client able to return HTTP chunks when chunked transfer encoding is used. (#2150)
add append_version arg into StaticResource.url and StaticResource.url_for methods for getting an url with hash (version) of the file. (#2157)
Fix parsing the Forwarded header. * commas and semicolons are allowed inside quoted-strings; * empty forwarded-pairs (as in for=_1;;by=_2) are allowed; * non-standard parameters are allowed (although this alone could be easily done in the previous parser). (#2173)
Don't require ssl module to run. aiohttp does not require SSL to function. The code paths involved with SSL will only be hit upon SSL usage. Raise RuntimeError if HTTPS protocol is required but ssl module is not present. (#2221)
Accept coroutine fixtures in pytest plugin (#2223)
Call shutdown_asyncgens before event loop closing on Python 3.6. (#2227)
Speed up Signals when there are no receivers (#2229)
Raise InvalidURL instead of ValueError on fetches with invalid URL. (#2241)
Move DummyCookieJar into cookiejar.py (#2242)
run_app: Make print=None disable printing (#2260)
Support brotli encoding (generic-purpose lossless compression algorithm) (#2270)
Add server support for WebSockets Per-Message Deflate. Add client option to add deflate compress header in WebSockets request header. If calling ClientSession.ws_connect() with compress=15 the client will support deflate compress negotiation. (#2273)
Support verify_ssl, fingerprint, ssl_context and proxy_headers by client.ws_connect. (#2292)
Added aiohttp.ClientConnectorSSLError when connection fails due ssl.SSLError (#2294)
aiohttp.web.Application.make_handler support access_log_class (#2315)
Build HTTP parser extension in non-strict mode by default. (#2332)

Bugfixes

Clear auth information on redirecting to other domain (#1699)
Fix missing app.loop on startup hooks during tests (#2060)
Fix issue with synchronous session closing when using ClientSession as an asynchronous context manager. (#2063)
Fix issue with CookieJar incorrectly expiring cookies in some edge cases. (#2084)
Force use of IPv4 during test, this will make tests run in a Docker container (#2104)
Warnings about unawaited coroutines now correctly point to the user's code. (#2106)
Fix issue with IndexError being raised by the StreamReader.iter_chunks() generator. (#2112)
Support HTTP 308 Permanent redirect in client class. (#2114)
Fix FileResponse sending empty chunked body on 304. (#2143)
Do not add Content-Length: 0 to GET/HEAD/TRACE/OPTIONS requests by default. (#2167)
Fix parsing the Forwarded header according to RFC 7239. (#2170)
Securely determining remote/scheme/host #2171 (#2171)
Fix header name parsing, if name is split into multiple lines (#2183)
Handle session close during connection, KeyError: <aiohttp.connector._TransportPlaceholder> (#2193)
Fixes uncaught TypeError in helpers.guess_filename if name is not a string (#2201)
Raise OSError on async DNS lookup if resolved domain is an alias for another one, which does not have an A or CNAME record. (#2231)
Fix incorrect warning in StreamReader. (#2251)
Properly clone state of web request (#2284)
Fix C HTTP parser for cases when status line is split into different TCP packets. (#2311)
Fix web.FileResponse overriding user supplied Content-Type (#2317)

Improved Documentation

Add a note about possible performance degradation in await resp.text() if charset was not provided by Content-Type HTTP header. Pass explicit encoding to solve it. (#1811)
Drop disqus widget from documentation pages. (#2018)
Add a graceful shutdown section to the client usage documentation. (#2039)
Document connector_owner parameter. (#2072)
Update the doc of web.Application (#2081)
Fix mistake about access log disabling. (#2085)
Add example usage of on_startup and on_shutdown signals by creating and disposing an aiopg connection engine. (#2131)
Document encoded=True for yarl.URL, it disables all yarl transformations. (#2198)
Document that all app's middleware factories are run for every request. (#2225)
Reflect the fact that default resolver is threaded one starting from aiohttp 1.1 (#2228)

Deprecations and Removals

Drop deprecated Server.finish_connections (#2006)
Drop %O format from logging, use %b instead. Drop %e format from logging, environment variables are not supported anymore. (#2123)
Drop deprecated secure_proxy_ssl_header support (#2171)
Removed TimeService in favor of simple caching. TimeService also had a bug where it lost about 0.5 seconds per second. (#2176)
Drop unused response_factory from static files API (#2290)

Misc

#2013, #2014, #2048, #2094, #2149, #2187, #2214, #2225, #2243, #2248

2.2.5 (2017-08-03)

Don't raise deprecation warning on loop.run_until_complete(client.close()) (#2065)

2.2.4 (2017-08-02)

Fix issue with synchronous session closing when using ClientSession as an asynchronous context manager. (#2063)

2.2.3 (2017-07-04)

Fix _CoroGuard for python 3.4

2.2.2 (2017-07-03)

Allow await session.close() along with yield from session.close()

2.2.1 (2017-07-02)

Relax yarl requirement to 0.11+
Backport #2026: session.close is a coroutine (#2029)

2.2.0 (2017-06-20)

Add doc for add_head, update doc for add_get. (#1944)
Fixed consecutive calls for Response.write_eof.
Retain method attributes (e.g. __doc__) when registering synchronous handlers for resources. (#1953)
Added signal TERM handling in run_app to gracefully exit (#1932)
Fix websocket issues caused by frame fragmentation. (#1962)
Raise RuntimeError is you try to set the Content Length and enable chunked encoding at the same time (#1941)
Small update for unittest_run_loop
Use CIMultiDict for ClientRequest.skip_auto_headers (#1970)
Fix wrong startup sequence: test server and run_app() are not raise DeprecationWarning now (#1947)
Make sure cleanup signal is sent if startup signal has been sent (#1959)
Fixed server keep-alive handler, could cause 100% cpu utilization (#1955)
Connection can be destroyed before response get processed if await aiohttp.request(..) is used (#1981)
MultipartReader does not work with -OO (#1969)
Fixed ClientPayloadError with blank Content-Encoding header (#1931)
Support deflate encoding implemented in httpbin.org/deflate (#1918)
Fix BadStatusLine caused by extra CRLF after POST data (#1792)
Keep a reference to ClientSession in response object (#1985)
Deprecate undocumented app.on_loop_available signal (#1978)

2.1.0 (2017-05-26)

Added support for experimental async-tokio event loop written in Rust https://github.com/PyO3/tokio
Write to transport \r\n before closing after keepalive timeout, otherwise client can not detect socket disconnection. (#1883)
Only call loop.close in run_app if the user did not supply a loop. Useful for allowing clients to specify their own cleanup before closing the asyncio loop if they wish to tightly control loop behavior
Content disposition with semicolon in filename (#917)
Added request_info to response object and ClientResponseError. (#1733)
Added history to ClientResponseError. (#1741)
Allow to disable redirect url re-quoting (#1474)
Handle RuntimeError from transport (#1790)
Dropped "%O" in access logger (#1673)
Added args and kwargs to unittest_run_loop. Useful with other decorators, for example @patch. (#1803)
Added iter_chunks to response.content object. (#1805)
Avoid creating TimerContext when there is no timeout to allow compatibility with Tornado. (#1817) (#1180)
Add proxy_from_env to ClientRequest to read from environment variables. (#1791)
Add DummyCookieJar helper. (#1830)
Fix assertion errors in Python 3.4 from noop helper. (#1847)
Do not unquote + in match_info values (#1816)
Use Forwarded, X-Forwarded-Scheme and X-Forwarded-Host for better scheme and host resolution. (#1134)
Fix sub-application middlewares resolution order (#1853)
Fix applications comparison (#1866)
Fix static location in index when prefix is used (#1662)
Make test server more reliable (#1896)
Extend list of web exceptions, add HTTPUnprocessableEntity, HTTPFailedDependency, HTTPInsufficientStorage status codes (#1920)

2.0.7 (2017-04-12)

Fix pypi distribution
Fix exception description (#1807)
Handle socket error in FileResponse (#1773)
Cancel websocket heartbeat on close (#1793)

2.0.6 (2017-04-04)

Keeping blank values for request.post() and multipart.form() (#1765)
TypeError in data_received of ResponseHandler (#1770)
Fix web.run_app not to bind to default host-port pair if only socket is passed (#1786)

2.0.5 (2017-03-29)

Memory leak with aiohttp.request (#1756)
Disable cleanup closed ssl transports by default.
Exception in request handling if the server responds before the body is sent (#1761)

2.0.4 (2017-03-27)

Memory leak with aiohttp.request (#1756)
Encoding is always UTF-8 in POST data (#1750)
Do not add "Content-Disposition" header by default (#1755)

2.0.3 (2017-03-24)

Call https website through proxy will cause error (#1745)
Fix exception on multipart/form-data post if content-type is not set (#1743)

2.0.2 (2017-03-21)

Fixed Application.on_loop_available signal (#1739)
Remove debug code

2.0.1 (2017-03-21)

Fix allow-head to include name on route (#1737)
Fixed AttributeError in WebSocketResponse.can_prepare (#1736)

2.0.0 (2017-03-20)

Added json to ClientSession.request() method (#1726)
Added session's raise_for_status parameter, automatically calls raise_for_status() on any request. (#1724)
response.json() raises ClientResponseError exception if response's content type does not match (#1723)
- Cleanup timer and loop handle on any client exception.
Deprecate loop parameter for Application's constructor

2.0.0rc1 (2017-03-15)

Properly handle payload errors (#1710)
Added ClientWebSocketResponse.get_extra_info() (#1717)
It is not possible to combine Transfer-Encoding and chunked parameter, same for compress and Content-Encoding (#1655)
Connector's limit parameter indicates total concurrent connections. New limit_per_host added, indicates total connections per endpoint. (#1601)
Use url's raw_host for name resolution (#1685)
Change ClientResponse.url to yarl.URL instance (#1654)
Add max_size parameter to web.Request reading methods (#1133)
Web Request.post() stores data in temp files (#1469)
Add the allow_head=True keyword argument for add_get (#1618)
run_app and the Command Line Interface now support serving over Unix domain sockets for faster inter-process communication.
run_app now supports passing a preexisting socket object. This can be useful e.g. for socket-based activated applications, when binding of a socket is done by the parent process.
Implementation for Trailer headers parser is broken (#1619)
Fix FileResponse to not fall on bad request (range out of file size)
Fix FileResponse to correct stream video to Chromes
Deprecate public low-level api (#1657)
Deprecate encoding parameter for ClientSession.request() method
Dropped aiohttp.wsgi (#1108)
Dropped version from ClientSession.request() method
Dropped websocket version 76 support (#1160)
Dropped: aiohttp.protocol.HttpPrefixParser (#1590)
Dropped: Servers response's .started, .start() and .can_start() method (#1591)
Dropped: Adding sub app via app.router.add_subapp() is deprecated use app.add_subapp() instead (#1592)
Dropped: Application.finish() and Application.register_on_finish() (#1602)
Dropped: web.Request.GET and web.Request.POST
Dropped: aiohttp.get(), aiohttp.options(), aiohttp.head(), aiohttp.post(), aiohttp.put(), aiohttp.patch(), aiohttp.delete(), and aiohttp.ws_connect() (#1593)
Dropped: aiohttp.web.WebSocketResponse.receive_msg() (#1605)
Dropped: ServerHttpProtocol.keep_alive_timeout attribute and keep-alive, keep_alive_on, timeout, log constructor parameters (#1606)
Dropped: TCPConnector's` .resolve, .resolved_hosts, .clear_resolved_hosts() attributes and resolve constructor parameter (#1607)
Dropped ProxyConnector (#1609)

1.3.5 (2017-03-16)

Fixed None timeout support (#1720)

1.3.4 (2017-03-14)

Revert timeout handling in client request
Fix StreamResponse representation after eof
Fix file_sender to not fall on bad request (range out of file size)
Fix file_sender to correct stream video to Chromes
Fix NotImplementedError server exception (#1703)
Clearer error message for URL without a host name. (#1691)
Silence deprecation warning in __repr__ (#1690)
IDN + HTTPS = ssl.CertificateError (#1685)

1.3.3 (2017-02-19)

Fixed memory leak in time service (#1656)

1.3.2 (2017-02-16)

Awaiting on WebSocketResponse.send_* does not work (#1645)
Fix multiple calls to client ws_connect when using a shared header dict (#1643)
Make CookieJar.filter_cookies() accept plain string parameter. (#1636)

1.3.1 (2017-02-09)

Handle CLOSING in WebSocketResponse.__anext__
Fixed AttributeError 'drain' for server websocket handler (#1613)

1.3.0 (2017-02-08)

Multipart writer validates the data on append instead of on a request send (#920)
Multipart reader accepts multipart messages with or without their epilogue to consistently handle valid and legacy behaviors (#1526) (#1581)
Separate read + connect + request timeouts # 1523
Do not swallow Upgrade header (#1587)
Fix polls demo run application (#1487)
Ignore unknown 1XX status codes in client (#1353)
Fix sub-Multipart messages missing their headers on serialization (#1525)
Do not use readline when reading the content of a part in the multipart reader (#1535)
Add optional flag for quoting FormData fields (#916)
416 Range Not Satisfiable if requested range end > file size (#1588)
Having a : or @ in a route does not work (#1552)
Added receive_timeout timeout for websocket to receive complete message. (#1325)
Added heartbeat parameter for websocket to automatically send ping message. (#1024) (#777)
Remove web.Application dependency from web.UrlDispatcher (#1510)
Accepting back-pressure from slow websocket clients (#1367)
Do not pause transport during set_parser stage (#1211)
Lingering close does not terminate before timeout (#1559)
setsockopt may raise OSError exception if socket is closed already (#1595)
Lots of CancelledError when requests are interrupted (#1565)
Allow users to specify what should happen to decoding errors when calling a responses text() method (#1542)
Back port std module http.cookies for python3.4.2 (#1566)
Maintain url's fragment in client response (#1314)
Allow concurrently close WebSocket connection (#754)
Gzipped responses with empty body raises ContentEncodingError (#609)
Return 504 if request handle raises TimeoutError.
Refactor how we use keep-alive and close lingering timeouts.
Close response connection if we can not consume whole http message during client response release
Abort closed ssl client transports, broken servers can keep socket open un-limit time (#1568)
Log warning instead of RuntimeError is websocket connection is closed.
Deprecated: aiohttp.protocol.HttpPrefixParser will be removed in 1.4 (#1590)
Deprecated: Servers response's .started, .start() and .can_start() method will be removed in 1.4 (#1591)
Deprecated: Adding sub app via app.router.add_subapp() is deprecated use app.add_subapp() instead, will be removed in 1.4 (#1592)
Deprecated: aiohttp.get(), aiohttp.options(), aiohttp.head(), aiohttp.post(), aiohttp.put(), aiohttp.patch(), aiohttp.delete(), and aiohttp.ws_connect() will be removed in 1.4 (#1593)
Deprecated: Application.finish() and Application.register_on_finish() will be removed in 1.4 (#1602)

1.2.0 (2016-12-17)

Extract BaseRequest from web.Request, introduce web.Server (former RequestHandlerFactory), introduce new low-level web server which is not coupled with web.Application and routing (#1362)
Make TestServer.make_url compatible with yarl.URL (#1389)
Implement range requests for static files (#1382)
Support task attribute for StreamResponse (#1410)
Drop TestClient.app property, use TestClient.server.app instead (BACKWARD INCOMPATIBLE)
Drop TestClient.handler property, use TestClient.server.handler instead (BACKWARD INCOMPATIBLE)
TestClient.server property returns a test server instance, was asyncio.AbstractServer (BACKWARD INCOMPATIBLE)
Follow gunicorn's signal semantics in Gunicorn[UVLoop]WebWorker (#1201)
Call worker_int and worker_abort callbacks in Gunicorn[UVLoop]WebWorker (#1202)
Has functional tests for client proxy (#1218)
Fix bugs with client proxy target path and proxy host with port (#1413)
Fix bugs related to the use of unicode hostnames (#1444)
Preserve cookie quoting/escaping (#1453)
FileSender will send gzipped response if gzip version available (#1426)
Don't override Content-Length header in web.Response if no body was set (#1400)
Introduce router.post_init() for solving (#1373)
Fix raise error in case of multiple calls of TimeServive.stop()
Allow to raise web exceptions on router resolving stage (#1460)
Add a warning for session creation outside of coroutine (#1468)
Avoid a race when application might start accepting incoming requests but startup signals are not processed yet e98e8c6
Raise a RuntimeError when trying to change the status of the HTTP response after the headers have been sent (#1480)
Fix bug with https proxy acquired cleanup (#1340)
Use UTF-8 as the default encoding for multipart text parts (#1484)

1.1.6 (2016-11-28)

Fix BodyPartReader.read_chunk bug about returns zero bytes before EOF (#1428)

1.1.5 (2016-11-16)

Fix static file serving in fallback mode (#1401)

1.1.4 (2016-11-14)

Make TestServer.make_url compatible with yarl.URL (#1389)
Generate informative exception on redirects from server which does not provide redirection headers (#1396)

1.1.3 (2016-11-10)

Support root resources for sub-applications (#1379)

1.1.2 (2016-11-08)

Allow starting variables with an underscore (#1379)
Properly process UNIX sockets by gunicorn worker (#1375)
Fix ordering for FrozenList
Don't propagate pre and post signals to sub-application (#1377)

1.1.1 (2016-11-04)

Fix documentation generation (#1120)

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)

1.0.5 (2016-10-11)

Fix StreamReader._read_nowait to return all available data up to the requested amount (#1297)

1.0.4 (2016-09-22)

Fix FlowControlStreamReader.read_nowait so that it checks whether the transport is paused (#1206)

1.0.2 (2016-09-22)

Make CookieJar compatible with 32-bit systems (#1188)
Add missing WSMsgType to web_ws.__all__, see (#1200)
Fix CookieJar ctor when called with loop=None (#1203)
Fix broken upper-casing in wsgi support (#1197)

1.0.1 (2016-09-16)

Restore aiohttp.web.MsgType alias for aiohttp.WSMsgType for sake of backward compatibility (#1178)
Tune alabaster schema.
Use text/html content type for displaying index pages by static file handler.
Fix AssertionError in static file handling (#1177)
Fix access log formats %O and %b for static file handling
Remove debug setting of GunicornWorker, use app.debug to control its debug-mode instead

1.0.0 (2016-09-16)

Change default size for client session's connection pool from unlimited to 20 (#977)
Add IE support for cookie deletion. (#994)
Remove deprecated WebSocketResponse.wait_closed method (BACKWARD INCOMPATIBLE)
Remove deprecated force parameter for ClientResponse.close method (BACKWARD INCOMPATIBLE)
Avoid using of mutable CIMultiDict kw param in make_mocked_request (#997)
Make WebSocketResponse.close a little bit faster by avoiding new task creating just for timeout measurement
Add proxy and proxy_auth params to client.get() and family, deprecate ProxyConnector (#998)
Add support for websocket send_json and receive_json, synchronize server and client API for websockets (#984)
Implement router shourtcuts for most useful HTTP methods, use app.router.add_get(), app.router.add_post() etc. instead of app.router.add_route() (#986)
Support SSL connections for gunicorn worker (#1003)
Move obsolete examples to legacy folder
Switch to multidict 2.0 and title-cased strings (#1015)
{FOO}e logger format is case-sensitive now
Fix logger report for unix socket 8e8469b
Rename aiohttp.websocket to aiohttp._ws_impl
Rename aiohttp.MsgType tp aiohttp.WSMsgType
Introduce aiohttp.WSMessage officially
Rename Message -> WSMessage
Remove deprecated decode param from resp.read(decode=True)
Use 5min default client timeout (#1028)
Relax HTTP method validation in UrlDispatcher (#1037)
Pin minimal supported asyncio version to 3.4.2+ (loop.is_close() should be present)
Remove aiohttp.websocket module (BACKWARD INCOMPATIBLE) Please use high-level client and server approaches
Link header for 451 status code is mandatory
Fix test_client fixture to allow multiple clients per test (#1072)
make_mocked_request now accepts dict as headers (#1073)
Add Python 3.5.2/3.6+ compatibility patch for async generator protocol change (#1082)
Improvement test_client can accept instance object (#1083)
Simplify ServerHttpProtocol implementation (#1060)
Add a flag for optional showing directory index for static file handling (#921)
Define web.Application.on_startup() signal handler (#1103)
Drop ChunkedParser and LinesParser (#1111)
Call Application.startup in GunicornWebWorker (#1105)
Fix client handling hostnames with 63 bytes when a port is given in the url (#1044)
Implement proxy support for ClientSession.ws_connect (#1025)
Return named tuple from WebSocketResponse.can_prepare (#1016)
Fix access_log_format in GunicornWebWorker (#1117)
Setup Content-Type to application/octet-stream by default (#1124)
Deprecate debug parameter from app.make_handler(), use Application(debug=True) instead (#1121)
Remove fragment string in request path (#846)
Use aiodns.DNSResolver.gethostbyname() if available (#1136)
Fix static file sending on uvloop when sendfile is available (#1093)
Make prettier urls if query is empty dict (#1143)
Fix redirects for HEAD requests (#1147)
Default value for StreamReader.read_nowait is -1 from now (#1150)
aiohttp.StreamReader is not inherited from asyncio.StreamReader from now (BACKWARD INCOMPATIBLE) (#1150)
Streams documentation added (#1150)
Add multipart coroutine method for web Request object (#1067)
Publish ClientSession.loop property (#1149)
Fix static file with spaces (#1140)
Fix piling up asyncio loop by cookie expiration callbacks (#1061)
Drop Timeout class for sake of async_timeout external library. aiohttp.Timeout is an alias for async_timeout.timeout
use_dns_cache parameter of aiohttp.TCPConnector is True by default (BACKWARD INCOMPATIBLE) (#1152)
aiohttp.TCPConnector uses asynchronous DNS resolver if available by default (BACKWARD INCOMPATIBLE) (#1152)
Conform to RFC3986 - do not include url fragments in client requests (#1174)
Drop ClientSession.cookies (BACKWARD INCOMPATIBLE) (#1173)
Refactor AbstractCookieJar public API (BACKWARD INCOMPATIBLE) (#1173)
Fix clashing cookies with have the same name but belong to different domains (BACKWARD INCOMPATIBLE) (#1125)
Support binary Content-Transfer-Encoding (#1169)

0.22.5 (08-02-2016)

Pin miltidict version to >=1.2.2

0.22.3 (07-26-2016)

Do not filter cookies if unsafe flag provided (#1005)

0.22.2 (07-23-2016)

Suppress CancelledError when Timeout raises TimeoutError (#970)
Don't expose aiohttp.__version__
Add unsafe parameter to CookieJar (#968)
Use unsafe cookie jar in test client tools
Expose aiohttp.CookieJar name

0.22.1 (07-16-2016)

Large cookie expiration/max-age does not break an event loop from now (fixes (#967))

0.22.0 (07-15-2016)

Fix bug in serving static directory (#803)
Fix command line arg parsing (#797)
Fix a documentation chapter about cookie usage (#790)
Handle empty body with gzipped encoding (#758)
Support 451 Unavailable For Legal Reasons http status (#697)
Fix Cookie share example and few small typos in docs (#817)
UrlDispatcher.add_route with partial coroutine handler (#814)
Optional support for aiodns (#728)
Add ServiceRestart and TryAgainLater websocket close codes (#828)
Fix prompt message for web.run_app (#832)
Allow to pass None as a timeout value to disable timeout logic (#834)
Fix leak of connection slot during connection error (#835)
Gunicorn worker with uvloop support aiohttp.worker.GunicornUVLoopWebWorker (#878)
Don't send body in response to HEAD request (#838)
Skip the preamble in MultipartReader (#881)
Implement BasicAuth decode classmethod. (#744)
Don't crash logger when transport is None (#889)
Use a create_future compatibility wrapper instead of creating Futures directly (#896)
Add test utilities to aiohttp (#902)
Improve Request.__repr__ (#875)
Skip DNS resolving if provided host is already an ip address (#874)
Add headers to ClientSession.ws_connect (#785)
Document that server can send pre-compressed data (#906)
Don't add Content-Encoding and Transfer-Encoding if no body (#891)
Add json() convenience methods to websocket message objects (#897)
Add client_resp.raise_for_status() (#908)
Implement cookie filter (#799)
Include an example of middleware to handle error pages (#909)
Fix error handling in StaticFileMixin (#856)
Add mocked request helper (#900)
Fix empty ALLOW Response header for cls based View (#929)
Respect CONNECT method to implement a proxy server (#847)
Add pytest_plugin (#914)
Add tutorial
Add backlog option to support more than 128 (default value in "create_server" function) concurrent connections (#892)
Allow configuration of header size limits (#912)
Separate sending file logic from StaticRoute dispatcher (#901)
Drop deprecated share_cookies connector option (BACKWARD INCOMPATIBLE)
Drop deprecated support for tuple as auth parameter. Use aiohttp.BasicAuth instead (BACKWARD INCOMPATIBLE)
Remove deprecated request.payload property, use content instead. (BACKWARD INCOMPATIBLE)
Drop all mentions about api changes in documentation for versions older than 0.16
Allow to override default cookie jar (#963)
Add manylinux wheel builds
Dup a socket for sendfile usage (#964)

0.21.6 (05-05-2016)

Drop initial query parameters on redirects (#853)

0.21.5 (03-22-2016)

Fix command line arg parsing (#797)

0.21.4 (03-12-2016)

Fix ResourceAdapter: don't add method to allowed if resource is not match (#826)
Fix Resource: append found method to returned allowed methods

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)

0.20.2 (01-07-2016)

Enable use of await for a class based view (#717)
Check address family to fill wsgi env properly (#718)
Fix memory leak in headers processing (thanks to Marco Paolini) (#723)

0.20.1 (12-30-2015)

Raise RuntimeError is Timeout context manager was used outside of task context.
Add number of bytes to stream.read_nowait (#700)
Use X-FORWARDED-PROTO for wsgi.url_scheme when available

0.20.0 (12-28-2015)

Extend list of web exceptions, add HTTPMisdirectedRequest, HTTPUpgradeRequired, HTTPPreconditionRequired, HTTPTooManyRequests, HTTPRequestHeaderFieldsTooLarge, HTTPVariantAlsoNegotiates, HTTPNotExtended, HTTPNetworkAuthenticationRequired status codes (#644)
Do not remove AUTHORIZATION header by WSGI handler (#649)
Fix broken support for https proxies with authentication (#617)
Get REMOTE_* and SEVER_* http vars from headers when listening on unix socket (#654)
Add HTTP 308 support (#663)
Add Tf format (time to serve request in seconds, %06f format) to access log (#669)
Remove one and a half years long deprecated ClientResponse.read_and_close() method
Optimize chunked encoding: use a single syscall instead of 3 calls on sending chunked encoded data
Use TCP_CORK and TCP_NODELAY to optimize network latency and throughput (#680)
Websocket XOR performance improved (#687)
Avoid sending cookie attributes in Cookie header (#613)
Round server timeouts to seconds for grouping pending calls. That leads to less amount of poller syscalls e.g. epoll.poll(). (#702)
Close connection on websocket handshake error (#703)
Implement class based views (#684)
Add headers parameter to ws_connect() (#709)
Drop unused function parse_remote_addr() (#708)
Close session on exception (#707)
Store http code and headers in WSServerHandshakeError (#706)
Make some low-level message properties readonly (#710)

0.19.0 (11-25-2015)

Memory leak in ParserBuffer (#579)
Support gunicorn's max_requests settings in gunicorn worker
Fix wsgi environment building (#573)
Improve access logging (#572)
Drop unused host and port from low-level server (#586)
Add Python 3.5 async for implementation to server websocket (#543)
Add Python 3.5 async for implementation to client websocket
Add Python 3.5 async with implementation to client websocket
Add charset parameter to web.Response constructor (#593)
Forbid passing both Content-Type header and content_type or charset params into web.Response constructor
Forbid duplicating of web.Application and web.Request (#602)
Add an option to pass Origin header in ws_connect (#607)
Add json_response function (#592)
Make concurrent connections respect limits (#581)
Collect history of responses if redirects occur (#614)
Enable passing pre-compressed data in requests (#621)
Expose named routes via UrlDispatcher.named_routes() (#622)
Allow disabling sendfile by environment variable AIOHTTP_NOSENDFILE (#629)
Use ensure_future if available
Always quote params for Content-Disposition (#641)
Support async for in multipart reader (#640)
Add Timeout context manager (#611)

0.18.4 (13-11-2015)

Relax rule for router names again by adding dash to allowed characters: they may contain identifiers, dashes, dots and columns

0.18.3 (25-10-2015)

Fix formatting for _RequestContextManager helper (#590)

0.18.2 (22-10-2015)

Fix regression for OpenSSL < 1.0.0 (#583)

0.18.1 (20-10-2015)

Relax rule for router names: they may contain dots and columns starting from now

0.18.0 (19-10-2015)

Use errors.HttpProcessingError.message as HTTP error reason and message (#459)
Optimize cythonized multidict a bit
Change repr's of multidicts and multidict views
default headers in ClientSession are now case-insensitive
Make '=' char and 'wss://' schema safe in urls (#477)
ClientResponse.close() forces connection closing by default from now (#479)

N.B. Backward incompatible change: was .close(force=False) Using `force parameter for the method is deprecated: use .release() instead.
Properly requote URL's path (#480)
add skip_auto_headers parameter for client API (#486)
Properly parse URL path in aiohttp.web.Request (#489)
Raise RuntimeError when chunked enabled and HTTP is 1.0 (#488)
Fix a bug with processing io.BytesIO as data parameter for client API (#500)
Skip auto-generation of Content-Type header (#507)
Use sendfile facility for static file handling (#503)
Default response_factory in app.router.add_static now is StreamResponse, not None. The functionality is not changed if default is not specified.
Drop ClientResponse.message attribute, it was always implementation detail.
Streams are optimized for speed and mostly memory in case of a big HTTP message sizes (#496)
Fix a bug for server-side cookies for dropping cookie and setting it again without Max-Age parameter.
Don't trim redirect URL in client API (#499)
Extend precision of access log "D" to milliseconds (#527)
Deprecate StreamResponse.start() method in favor of StreamResponse.prepare() coroutine (#525)

.start() is still supported but responses begun with .start() does not call signal for response preparing to be sent.
Add StreamReader.__repr__
Drop Python 3.3 support, from now minimal required version is Python 3.4.1 (#541)
Add async with support for ClientSession.request() and family (#536)
Ignore message body on 204 and 304 responses (#505)
TCPConnector processed both IPv4 and IPv6 by default (#559)
Add .routes() view for urldispatcher (#519)
Route name should be a valid identifier name from now (#567)
Implement server signals (#562)
Drop a year-old deprecated files parameter from client API.
Added async for support for aiohttp stream (#542)

0.17.4 (09-29-2015)

Properly parse URL path in aiohttp.web.Request (#489)
Add missing coroutine decorator, the client api is await-compatible now

0.17.3 (08-28-2015)

Remove Content-Length header on compressed responses (#450)
Support Python 3.5
Improve performance of transport in-use list (#472)
Fix connection pooling (#473)

0.17.2 (08-11-2015)

Don't forget to pass data argument forward (#462)
Fix multipart read bytes count (#463)

0.17.1 (08-10-2015)

Fix multidict comparison to arbitrary abc.Mapping

0.17.0 (08-04-2015)

Make StaticRoute support Last-Modified and If-Modified-Since headers (#386)
Add Request.if_modified_since and Stream.Response.last_modified properties
Fix deflate compression when writing a chunked response (#395)
Request`s content-length header is cleared now after redirect from POST method (#391)
Return a 400 if server received a non HTTP content (#405)
Fix keep-alive support for aiohttp clients (#406)
Allow gzip compression in high-level server response interface (#403)
Rename TCPConnector.resolve and family to dns_cache (#415)
Make UrlDispatcher ignore quoted characters during url matching (#414) Backward-compatibility warning: this may change the url matched by your queries if they send quoted character (like %2F for /) (#414)
Use optional cchardet accelerator if present (#418)
Borrow loop from Connector in ClientSession if loop is not set
Add context manager support to ClientSession for session closing.
Add toplevel get(), post(), put(), head(), delete(), options(), patch() coroutines.
Fix IPv6 support for client API (#425)
Pass SSL context through proxy connector (#421)
Make the rule: path for add_route should start with slash
Don't process request finishing by low-level server on closed event loop
Don't override data if multiple files are uploaded with same key (#433)
Ensure multipart.BodyPartReader.read_chunk read all the necessary data to avoid false assertions about malformed multipart payload
Don't send body for 204, 205 and 304 http exceptions (#442)
Correctly skip Cython compilation in MSVC not found (#453)
Add response factory to StaticRoute (#456)
Don't append trailing CRLF for multipart.BodyPartReader (#454)

0.16.6 (07-15-2015)

Skip compilation on Windows if vcvarsall.bat cannot be found (#438)

0.16.5 (06-13-2015)

Get rid of all comprehensions and yielding in _multidict (#410)

0.16.4 (06-13-2015)

Don't clear current exception in multidict's __repr__ (cythonized versions) (#410)

0.16.3 (05-30-2015)

Fix StaticRoute vulnerability to directory traversal attacks (#380)

0.16.2 (05-27-2015)

Update python version required for __del__ usage: it's actually 3.4.1 instead of 3.4.0
Add check for presence of loop.is_closed() method before call the former (#378)

0.16.1 (05-27-2015)

Fix regression in static file handling (#377)

0.16.0 (05-26-2015)

Unset waiter future after cancellation (#363)
Update request url with query parameters (#372)
Support new fingerprint param of TCPConnector to enable verifying SSL certificates via MD5, SHA1, or SHA256 digest (#366)
Setup uploaded filename if field value is binary and transfer encoding is not specified (#349)
Implement ClientSession.close() method
Implement connector.closed readonly property
Implement ClientSession.closed readonly property
Implement ClientSession.connector readonly property
Implement ClientSession.detach method
Add __del__ to client-side objects: sessions, connectors, connections, requests, responses.
Refactor connections cleanup by connector (#357)
Add limit parameter to connector constructor (#358)
Add request.has_body property (#364)
Add response_class parameter to ws_connect() (#367)
ProxyConnector does not support keep-alive requests by default starting from now (#368)
Add connector.force_close property
Add ws_connect to ClientSession (#374)
Support optional chunk_size parameter in router.add_static()

0.15.3 (04-22-2015)

Fix graceful shutdown handling
Fix Expect header handling for not found and not allowed routes (#340)

0.15.2 (04-19-2015)

Flow control subsystem refactoring
HTTP server performance optimizations
Allow to match any request method with *
Explicitly call drain on transport (#316)
Make chardet module dependency mandatory (#318)
Support keep-alive for HTTP 1.0 (#325)
Do not chunk single file during upload (#327)
Add ClientSession object for cookie storage and default headers (#328)
Add keep_alive_on argument for HTTP server handler.

0.15.1 (03-31-2015)

Pass Autobahn Testsuite tests
Fixed websocket fragmentation
Fixed websocket close procedure
Fixed parser buffer limits
Added timeout parameter to WebSocketResponse ctor
Added WebSocketResponse.close_code attribute

0.15.0 (03-27-2015)

Client WebSockets support
New Multipart system (#273)
Support for "Except" header (#287) (#267)
Set default Content-Type for post requests (#184)
Fix issue with construction dynamic route with regexps and trailing slash (#266)
Add repr to web.Request
Add repr to web.Response
Add repr for NotFound and NotAllowed match infos
Add repr for web.Application
Add repr to UrlMappingMatchInfo (#217)
Gunicorn 19.2.x compatibility

0.14.4 (01-29-2015)

Fix issue with error during constructing of url with regex parts (#264)

0.14.3 (01-28-2015)

Use path='/' by default for cookies (#261)

0.14.2 (01-23-2015)

Connections leak in BaseConnector (#253)
Do not swallow websocket reader exceptions (#255)
web.Request's read, text, json are memorized (#250)

0.14.1 (01-15-2015)

HttpMessage._add_default_headers does not overwrite existing headers (#216)
Expose multidict classes at package level
add aiohttp.web.WebSocketResponse
According to RFC 6455 websocket subprotocol preference order is provided by client, not by server
websocket's ping and pong accept optional message parameter
multidict views do not accept getall parameter anymore, it returns the full body anyway.
multidicts have optional Cython optimization, cythonized version of multidicts is about 5 times faster than pure Python.
multidict.getall() returns list, not tuple.
Backward incompatible change: now there are two mutable multidicts (MultiDict, CIMultiDict) and two immutable multidict proxies (MultiDictProxy and CIMultiDictProxy). Previous edition of multidicts was not a part of public API BTW.
Router refactoring to push Not Allowed and Not Found in middleware processing
Convert ConnectionError to aiohttp.DisconnectedError and don't eat ConnectionError exceptions from web handlers.
Remove hop headers from Response class, wsgi response still uses hop headers.
Allow to send raw chunked encoded response.
Allow to encode output bytes stream into chunked encoding.
Allow to compress output bytes stream with deflate encoding.
Server has 75 seconds keepalive timeout now, was non-keepalive by default.
Application does not accept **kwargs anymore ((#243)).
Request is inherited from dict now for making per-request storage to middlewares ((#242)).

0.13.1 (12-31-2014)

Add aiohttp.web.StreamResponse.started property (#213)
HTML escape traceback text in ServerHttpProtocol.handle_error
Mention handler and middlewares in aiohttp.web.RequestHandler.handle_request on error ((#218))

0.13.0 (12-29-2014)

StreamResponse.charset converts value to lower-case on assigning.
Chain exceptions when raise ClientRequestError.
Support custom regexps in route variables (#204)
Fixed graceful shutdown, disable keep-alive on connection closing.
Decode HTTP message with utf-8 encoding, some servers send headers in utf-8 encoding (#207)
Support aiohtt.web middlewares (#209)
Add ssl_context to TCPConnector (#206)

0.12.0 (12-12-2014)

Deep refactoring of aiohttp.web in backward-incompatible manner. Sorry, we have to do this.
Automatically force aiohttp.web handlers to coroutines in UrlDispatcher.add_route() (#186)
Rename Request.POST() function to Request.post()
Added POST attribute
Response processing refactoring: constructor does not accept Request instance anymore.
Pass application instance to finish callback
Exceptions refactoring
Do not unquote query string in aiohttp.web.Request
Fix concurrent access to payload in RequestHandle.handle_request()
Add access logging to aiohttp.web
Gunicorn worker for aiohttp.web
Removed deprecated AsyncGunicornWorker
Removed deprecated HttpClient

0.11.0 (11-29-2014)

Support named routes in aiohttp.web.UrlDispatcher (#179)
Make websocket subprotocols conform to spec (#181)

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 404: 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 multiple 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.

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 asynchronous 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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2.3.10 (2018-02-02)

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2.3.5 (2017-11-30)

2.3.4 (2017-11-29)

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2.2.5 (2017-08-03)

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2.2.0 (2017-06-20)

2.1.0 (2017-05-26)

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2.0.6 (2017-04-04)

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2.0.4 (2017-03-27)