It was replying back the correct error, but with a crash message in
the console. This patch prevents it from crashing.
Fixes issue #94 reported by oribrost.
As with everything experimental, it probably has a lot of bugs and
may not even work.
Like Websocket, REST must be upgraded from a standard resource through
the init/3 function.
A key difference between Webmachine and Cowboy's REST protocol handler
is that in Cowboy the resource has direct access to the request object.
This makes a small change in a few places where you were expected to
return headers or body in Webmachine and are now expected to set them
directly yourself if needed (options/2, for example).
Another difference is that the functions rest_init/2 will always be
called when starting to process a request. Similarly, rest_terminate/2
will be called when the process completes successfully.
The Cowboy REST support also includes automatic language selection,
thanks to the languages_provided/2 callback.
Finally, Cowboy REST expects full URIs to be given at all times, and
will not try to reconstruct URIs from fragments.
Note that REST requests cannot be chained (keepalive) at this time.
This is a design issue in cowboy_http_protocol that will be fixed soon.
Check out the source for more details. It has been designed to be very
easy to read and understand so if you don't understand something,
it's probably a bug. Thanks in advance for all the great bug reports,
pull requests and comments you'll forward my way!
Considering how it must be used, a simple binary is much better
than a tag and a list of subtags. We still parse them like this
to make sure they follow the specs, though.
These functions allow to set response headers and body in advance,
before calling any of the reply functions.
Also add has_resp_header/2 and has_resp_body/1 to check if the given
response headers have already been set.
a release upgrade on a vm running cowboy where any other appup
includes an {update, Mod, {advanced, Extra}} instruction will hang
forever due to these child specs being wrong.
The gen_servers should be [Mod] and the non gen_server needs to be []
since there is no callback to handle this.
This function doesn't try to add any additional header besides the
Connection: Upgrade header. It also doesn't accept a body.
It should be used for the intermediate reply to an upgrade process,
before the real reply is sent (if any, for example when using TLS).
Allows to limit the size of request and header lines, thus preventing
Cowboy from infinitely reading from the socket and never finding an
end of line.
Defaults to 4096 bytes.
