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This commit is not only an early preview of HTTP/2, it is an
early preview of the new Cowboy architecture that will be
presented tomorrow in my talk. If you have found it before
the talk, great! It's not complete so you better go watch
the talk anyway.
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It was redundant with middlewares. Allows us to save a few operations
for every incoming requests.
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Simplify the interface for most cowboy_req functions. They all return
a single value except the four body reading functions. The reply functions
now only return a Req value.
Access functions do not return a Req anymore.
Functions that used to cache results do not have a cache anymore.
The interface for accessing query string and cookies has therefore
been changed.
There are now three query string functions: qs/1 provides access
to the raw query string value; parse_qs/1 returns the query string
as a list of key/values; match_qs/2 returns a map containing the
values requested in the second argument, after applying constraints
and default value.
Similarly, there are two cookie functions: parse_cookies/1 and
match_cookies/2. More match functions will be added in future commits.
None of the functions return an error tuple anymore. It either works
or crashes. Cowboy will attempt to provide an appropriate status code
in the response of crashed handlers.
As a result, the content decode function has its return value changed
to a simple binary, and the body reading functions only return on success.
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The SPDY connection processes are also supervisors.
Missing:
* sendfile support
* request body reading support
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Should improve the detection of wrong protocol options.
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This is the first of many API incompatible changes.
You have been warned.
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Also update the CHANGELOG and copyright years.
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This allows any application to upgrade the protocol options without
having to restart the listener. This is most useful to update the
dispatch list of HTTP servers, for example.
The upgrade is done at the acceptor level, meaning only new connections
receive the new protocol options.
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This new exported function returns a Child Spec suitable for embedding
cowboy in another applications supervisor structure. While here,
implement `start_listener/6` in terms of it.
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Currently only supports limiting the maximum number of
connections by managing connection pools.
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Idea given by bfrog, fixes issue #34.
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This is probably not perfect yet but it should be better than
nothing. We'll improve things with feedback received from the
many users.
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Following discussions on #erlounge.
Also fixes compilation in R14B03 and fixes a few underspecs
dialyzer warnings.
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As requested by many people on IRC Cowboy is now a proper OTP application
to support soft code upgrades. It should also be easier to start and stop
listeners now using cowboy:start_listener/6 and cowboy:stop_listener/1.
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