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2016-06-13Merge static_world and web_server examplesLoïc Hoguin
The new example is called file_server and it's basically the same as web_server was. The name is clearer than the original, all examples being "Web servers". The new example is also tested and the test suite has been refactored a little.
2016-01-14Remove the .app.src file in all examplesLoïc Hoguin
2014-09-30Improve handler interface and documentationLoïc Hoguin
This change simplifies a little more the sub protocols mechanism. Aliases have been removed. The renaming of loop handlers as long polling handlers has been reverted. Plain HTTP handlers now simply do their work in the init/2 callback. There is no specific code for them. Loop handlers now follow the same return value as Websocket, they use ok to continue and shutdown to stop. Terminate reasons for all handler types have been documented. The terminate callback is now appropriately called in all cases (or should be). Behaviors for all handler types have been moved in the module that implement them. This means that cowboy_handler replaces the cowboy_http_handler behavior, and similarly cowboy_loop replaces cowboy_loop_handler, cowboy_websocket replaces cowboy_websocket_handler. Finally cowboy_rest now has the start of a behavior in it and will have the full list of optional callbacks defined once Erlang 18.0 gets released. The guide has been reorganized and should be easier to follow.
2014-09-26Unify the init and terminate callbacksLoïc Hoguin
This set of changes is the first step to simplify the writing of handlers, by removing some extraneous callbacks and making others optional. init/3 is now init/2, its first argument being removed. rest_init/2 and rest_terminate/2 have been removed. websocket_init/3 and websocket_terminate/3 have been removed. terminate/3 is now optional. It is called regardless of the type of handler, including rest and websocket. The return value of init/2 changed. It now returns {Mod, Req, Opts} with Mod being either one of the four handler type or a custom module. It can also return extra timeout and hibernate options. The signature for sub protocols has changed, they now receive these extra timeout and hibernate options. Loop handlers are now implemented in cowboy_long_polling, and will be renamed throughout the project in a future commit.
2014-09-23Breaking update of the cowboy_req interfaceLoïc Hoguin
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.
2013-11-02Review, improve and document the static files handlerLoïc Hoguin
Changes include: * Much simplified route configuration. * Etag generation is now enabled by default. * Web mimetypes are now detected by default. A bigger list of mimetypes can be detected without any additional library. * Mimetypes can no longer be specified as a list. Copying this list for new connections is too costy. You can easily convert it into a function and pass that function to the handler instead. * You can however specify a single hardcoded mimetype. Mostly useful when serving a single file, like an index.html file, to avoid extra operations. * Specifying a path as a list of tokens is not possible anymore. Use either a binary or a string. * Using a private directory will not work if the application was not started properly. Cowboy will not attempt to find the location of this directory if the VM doesn't know it, as this caused issues in some setups. * Overall the code has been much simplified and clarified, and of course has now been documented.
2013-09-09Fix the list of registered processes in the examplesLoïc Hoguin
2013-09-09Convert the web_server example to a releaseLoïc Hoguin
Temporary mimetypes list here too.
2013-09-04Make cowlib a proper dependencyLoïc Hoguin
Start moving a few functions from Cowboy into cowlib.
2013-02-16Add a web server exampleAdam Cammack
Explore re-routing in middleware.