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= cowboy(7)
== Name
cowboy - Small, fast, modern HTTP server for Erlang/OTP
== Description
Cowboy is an HTTP server for Erlang/OTP with support for the
HTTP/1.1, HTTP/2 and Websocket protocols.
Cowboy aims to provide a complete HTTP stack. This includes
the implementation of the HTTP RFCs but also any directly
related standards, like Websocket or Server-Sent Events.
== Modules
Functions:
* link:man:cowboy(3)[cowboy(3)] - Listener management
* link:man:cowboy_req(3)[cowboy_req(3)] - Request and response
* link:man:cowboy_router(3)[cowboy_router(3)] - Router
// @todo What about cowboy_constraints?
Protocols:
* link:man:cowboy_http(3)[cowboy_http(3)] - HTTP/1.1
* link:man:cowboy_http2(3)[cowboy_http2(3)] - HTTP/2
* link:man:cowboy_websocket(3)[cowboy_websocket(3)] - Websocket
Handlers:
* link:man:cowboy_static(3)[cowboy_static(3)] - Static file handler
// @todo What about cowboy_stream_h?
Behaviors:
* link:man:cowboy_handler(3)[cowboy_handler(3)] - Plain HTTP handlers
* link:man:cowboy_loop(3)[cowboy_loop(3)] - Loop handlers
* link:man:cowboy_middleware(3)[cowboy_middleware(3)] - Middlewares
* link:man:cowboy_rest(3)[cowboy_rest(3)] - REST handlers
* link:man:cowboy_stream(3)[cowboy_stream(3)] - Stream handlers
* link:man:cowboy_sub_protocol(3)[cowboy_sub_protocol(3)] - Sub protocols
* link:man:cowboy_websocket(3)[cowboy_websocket(3)] - Websocket handlers
Middlewares:
* link:man:cowboy_router(3)[cowboy_router(3)] - Router middleware
* link:man:cowboy_handler(3)[cowboy_handler(3)] - Handler middleware
== Dependencies
* link:man:ranch(7)[ranch(7)] - Socket acceptor pool for TCP protocols
* link:man:cowlib(7)[cowlib(7)] - Support library for manipulating Web protocols
* ssl - Secure communication over sockets
* crypto - Crypto functions
// @todo Explicitly depend on ssl.
All these applications must be started before the `cowboy`
application. To start Cowboy and all dependencies at once:
[source,erlang]
----
{ok, _} = application:ensure_all_started(cowboy).
----
== Environment
The `cowboy` application does not define any application
environment configuration parameters.
== See also
link:man:ranch(7)[ranch(7)],
link:man:cowlib(7)[cowlib(7)]
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