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= gun:update_flow(3)

== Name

gun:update_flow - Update a stream's flow control value

== Description

[source,erlang]
----
update_flow(ConnPid, StreamRef, Flow) -> ok

ConnPid   :: pid()
StreamRef :: reference()
Flow      :: pos_integer()
----

Update a stream's flow control value.

The flow value can only ever be incremented.

This function does nothing for streams that have flow
control disabled (which is the default).

== Arguments

ConnPid::

The pid of the Gun connection process.

StreamRef::

Identifier of the stream for the original request.

Flow::

Flow control value increment.

== Return value

The atom `ok` is returned.

== Changelog

* *2.0*: Function introduced.

== Examples

.Update a stream's flow control value
[source,erlang]
----
gun:update_flow(ConnPid, StreamRef, 10).
----

== See also

link:man:gun(3)[gun(3)],
link:man:gun:get(3)[gun:get(3)],
link:man:gun:head(3)[gun:head(3)],
link:man:gun:options(3)[gun:options(3)],
link:man:gun:patch(3)[gun:patch(3)],
link:man:gun:post(3)[gun:post(3)],
link:man:gun:put(3)[gun:put(3)],
link:man:gun:delete(3)[gun:delete(3)],
link:man:gun:headers(3)[gun:headers(3)],
link:man:gun:request(3)[gun:request(3)],
link:man:gun:ws_upgrade(3)[gun:ws_upgrade(3)]