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= cowboy_http(3)
== Name
cowboy_http - HTTP/1.1
== Description
The module `cowboy_http` implements HTTP/1.1 and HTTP/1.0
as a Ranch protocol.
== Options
[source,erlang]
----
opts() :: #{
env := cowboy_middleware:env(),
max_empty_lines := non_neg_integer(),
max_header_name_length := non_neg_integer(),
max_header_value_length := non_neg_integer(),
max_headers := non_neg_integer(),
max_keepalive := non_neg_integer(),
max_method_length := non_neg_integer(),
max_request_line_length := non_neg_integer(),
middlewares := [module()],
request_timeout := timeout()
}
----
// @todo Document the shutdown option.
Configuration for the HTTP/1.1 protocol.
This configuration is passed to Cowboy when starting listeners
using `cowboy:start_clear/4` or `cowboy:start_tls/4` functions.
It can be updated without restarting listeners using the
Ranch functions `ranch:get_protocol_options/1` and
`ranch:set_protocol_options/2`.
The default value is given next to the option name:
env (#{})::
Middleware environment.
max_empty_lines (5)::
Maximum number of empty lines before a request.
max_header_name_length (64)::
Maximum length of header names.
max_header_value_length (4096)::
Maximum length of header values.
max_headers (100)::
Maximum number of headers allowed per request.
max_keepalive (100)::
Maximum number of requests allowed per connection.
max_request_line_length (8000)::
Maximum length of the request line.
max_method_length (32)::
Maximum length of the method.
middlewares ([cowboy_router, cowboy_handler])::
Middlewares to run for every request.
request_timeout (5000)::
Time in ms with no requests before Cowboy closes the connection.
== Changelog
* *2.0*: The `max_method_length` option was added.
* *2.0*: The `env` option is now a map instead of a proplist.
* *2.0*: The `max_request_line_length` default was increased from 4096 to 8000.
* *2.0*: The `compress` option was temporarily removed.
* *2.0*: Options are now a map instead of a proplist.
* *2.0*: Protocol introduced. Replaces `cowboy_protocol`.
== See also
link:man:cowboy(7)[cowboy(7)],
link:man:cowboy_http2(3)[cowboy_http2(3)],
link:man:cowboy_websocket(3)[cowboy_websocket(3)]
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