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cowboy/examples/echo_get
Loïc Hoguin f1c3b6d76f Breaking update of the cowboy_req interface
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.
2014-09-23 16:43:29 +03:00
..
src Breaking update of the cowboy_req interface 2014-09-23 16:43:29 +03:00
Makefile Update to erlang.mk 1.0.0 2014-08-01 14:26:51 +02:00
README.md Update erlang.mk and update paths to start the release 2014-06-30 10:14:05 +02:00
relx.config Convert the GET echo example to a release 2013-09-07 22:26:40 +02:00

GET parameter echo example

To try this example, you need GNU make and git in your PATH.

To build the example, run the following command:

$ make

To start the release in the foreground:

$ ./_rel/echo_get_example/bin/echo_get_example console

Then point your browser at http://localhost:8080/?echo=hello. You can replace the echo parameter with another to check that the handler is echoing it back properly.

Example output

$ curl -i "http://localhost:8080/?echo=saymyname"
HTTP/1.1 200 OK
connection: keep-alive
server: Cowboy
date: Fri, 28 Sep 2012 04:09:04 GMT
content-length: 9
content-type: text/plain; charset=utf-8

saymyname