If the client is as simple as shown, I think the code is ok - there are a couple of chances for race conditions in regards to $TX not being in the correct state when the timer fires, but for a command-line script that may be acceptable (I'd just add some $SIG{INT} handlers to server and client). If this is part of a larger app, here's how I would have coded it:

my $ua = Mojo::UserAgent->new;
my $conn = $ua->websocket("ws://localhost:8080/" => sub {
    my ($ua, $tx) = @_;
    say "WebSocket handshake failed!"
        and return unless $tx->is_websocket;
    my $id = Mojo::IOLoop->recurring(5 => sub {
        my @command = qw/ RUN STOP /;
        my $command = $command[rand @command];
        say "Client > $command";
        $tx->send($command);
    });
    $tx->on(finish => sub {
        my ($tx, $code, $reason) = @_;
        say "WebSocket closed with status $code.";
        Mojo::IOLoop->remove($id);
        Mojo::IOLoop->stop_gracefully;
    });
    $tx->on(text => sub {
        my ($tx, $bytes) = @_;
        say "Server > ", $bytes;
    });
});
Mojo::IOLoop->start unless Mojo::IOLoop->is_running;

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In reply to Re: Mixing asynchronous data feed with synchronous program flow control by haukex
in thread Mixing asynchronous data feed with synchronous program flow control by Your Mother

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