= gun_up(3)

== Name

gun_up - The connection is up

== Description

[source,erlang]
----
{gun_up, ConnPid, Protocol}

ConnPid  :: pid()
Protocol :: http | http2
----

The connection is up.

This message informs the owner process that the connection or
reconnection completed.

Gun will now start processing the messages it received while
waiting for the connection to be up. If this is a reconnection,
then this may not be desirable for all requests. Those requests
should be cancelled when the connection goes down, and any
subsequent messages ignored.

== Elements

ConnPid::

The pid of the Gun connection process.

Protocol::

The protocol selected for this connection. It can be used
to determine the capabilities of the server.

== Changelog

* *1.0*: Message introduced.

== Examples

.Receive a gun_up message in a gen_server
[source,erlang]
----
handle_info({gun_up, ConnPid, _Protocol},
            State=#state{conn_pid=ConnPid}) ->
    %% Do something.
    {noreply, State}.
----

== See also

link:man:gun(3)[gun(3)],
link:man:gun:open(3)[gun:open(3)],
link:man:gun:open_unix(3)[gun:open_unix(3)],
link:man:gun:await_up(3)[gun:await_up(3)],
link:man:gun_down(3)[gun_down(3)],
link:man:gun_error(3)[gun_error(3)]