= cowboy_stream:early_error(3)

== Name

cowboy_stream:early_error - Handle an early error for a stream

== Description

[source,erlang]
----
early_error(StreamID, Reason, PartialReq, Resp, Opts) -> Resp

StreamID   :: cowboy_stream:stream_id()
Reason     :: cowboy_stream:reason()
PartialReq :: cowboy_stream:partial_req()
Resp       :: cowboy_stream:resp_command()
Opts       :: cowboy:opts()
----

Handle an early error for a stream.

This function should be called by all stream handlers. It will
propagate the early error to the next configured stream handler.

== Arguments

StreamID::

The stream ID.

Reason::

Reason for termination.

PartialReq::

The request data that has been received so far.

Resp::

The response that will be sent as a result of the early error.
+
It may be modified by the stream handler before or after
being propagated to the next handler.

Opts::

The protocol options.

== Return value

The response to be sent as a result of the early error.

== Changelog

* *2.0*: Function introduced.

== Examples

.Propagate the early error to the next stream handler
[source,erlang]
----
early_error(StreamID, Reason, PartialReq, Resp, Opts) ->
    cowboy_stream:early_error(StreamID, Reason, PartialReq, Resp, Opts).
----

== See also

link:man:cowboy_stream(3)[cowboy_stream(3)],
link:man:cowboy_stream:init(3)[cowboy_stream:init(3)],
link:man:cowboy_stream:data(3)[cowboy_stream:data(3)],
link:man:cowboy_stream:info(3)[cowboy_stream:info(3)],
link:man:cowboy_stream:terminate(3)[cowboy_stream:terminate(3)]