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= cowboy(3)
== Name
cowboy - HTTP server
== Description
The module `cowboy` provides convenience functions for
manipulating Ranch listeners.
== Exports
* link:man:cowboy:start_clear(3)[cowboy:start_clear(3)] - Listen for connections using plain TCP
* link:man:cowboy:start_tls(3)[cowboy:start_tls(3)] - Listen for connections using TLS
* link:man:cowboy:stop_listener(3)[cowboy:stop_listener(3)] - Stop the given listener
* link:man:cowboy:get_env(3)[cowboy:get_env(3)] - Retrieve a listener's environment value
* link:man:cowboy:set_env(3)[cowboy:set_env(3)] - Update a listener's environment value
== Types
=== fields()
[source,erlang]
----
fields() :: [Name
| {Name, Constraints}
| {Name, Constraints, Default}]
Name :: atom()
Constraints :: Constraint | [Constraint]
Constraint :: cowboy_constraints:constraint()
Default :: any()
----
Fields description for match operations.
This type is used in link:man:cowboy_router(3)[cowboy_router(3)]
for matching bindings and in the match functions found in
link:man:cowboy_req(3)[cowboy_req(3)].
=== http_headers()
[source,erlang]
----
http_headers() :: #{binary() => iodata()}
----
HTTP headers.
=== http_status()
[source,erlang]
----
http_status() :: non_neg_integer() | binary()
----
HTTP response status.
A binary status can be used to set a reason phrase. Note
however that HTTP/2 only sends the status code and drops
the reason phrase entirely.
=== http_version()
[source,erlang]
----
http_version() :: 'HTTP/2' | 'HTTP/1.1' | 'HTTP/1.0'
----
HTTP version.
Note that semantically, HTTP/1.1 and HTTP/2 are equivalent.
=== opts()
[source,erlang]
----
opts() :: map()
----
Options for the HTTP/1.1, HTTP/2 and Websocket protocols.
The protocol options are in a map containing all the options for
the different protocols that may be involved when connecting
to the listener, including HTTP/1.1 and HTTP/2.
The HTTP/1.1 options are documented in the
link:man:cowboy_http(3)[cowboy_http(3)] manual
and the HTTP/2 options in
link:man:cowboy_http2(3)[cowboy_http2(3)].
== See also
link:man:cowboy(7)[cowboy(7)],
link:man:ranch(3)[ranch(3)]
|
