{ok, _} = application:ensure_all_started(cowboy).cowboy - Small, fast, modern HTTP server for Erlang/OTP
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.
Functions:
cowboy(3) - Listener management
cowboy_req(3) - Request and response
cowboy_router(3) - Router
cowboy_constraints(3) - Constraints
Protocols:
cowboy_http(3) - HTTP/1.1
cowboy_http2(3) - HTTP/2
cowboy_websocket(3) - Websocket
Handlers:
cowboy_static(3) - Static file handler
Behaviors:
cowboy_handler(3) - Plain HTTP handlers
cowboy_loop(3) - Loop handlers
cowboy_middleware(3) - Middlewares
cowboy_rest(3) - REST handlers
cowboy_stream(3) - Stream handlers
cowboy_websocket(3) - Websocket handlers
Middlewares:
cowboy_router(3) - Router middleware
cowboy_handler(3) - Handler middleware
All these applications must be started before the cowboy
application. To start Cowboy and all dependencies at once:
{ok, _} = application:ensure_all_started(cowboy).The cowboy application does not define any application
environment configuration parameters.