html5 – Mojolicious和延迟的WebSocket

我有这个代码片段,我试图每X秒将一个字符串推送到服务器,如：

#!/usr/bin/env perl
use MojolicIoUs::Lite;
use EV;
use AnyEvent;
use POSIX qw(strftime);

get '/' => sub {
    my $self = shift;

    $self->render('main');
};

websocket '/echo' => sub {
        my $self = shift;
        my $w;
        $w = AE::timer 3,1,sub {
                    $self->send('Got it');
        };
      #  $self->send(strftime("Server $$: %a %b %e %H:%M:%S %Y",localtime));
};
app->start();

__DATA__
@@ main.html.ep
<html>
<head>
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.10.1/jquery.min.js"></script>
</head>
<body>
<table id="tableID">
<tbody>
</tbody>
</table>
<script type="text/javascript">
var ws = new WebSocket('ws://192.168.1.104:3000/echo');
      ws.onopen = function () {
        alert('Connection opened');
      };
      ws.onerror = function() { alert("Error"); };
      ws.onmessage = function (msg) {
          $("#tableID").find('tbody')
                       .append($('<tr>')
                       .append($('<td>')
                       .text(msg.data)
            )
        );

      };
</script>
</body>
</html>

AFAIK Mojo使用IO :: Loop事件循环,我认为AnyEvent应该没问题

这不起作用,我想知道为什么.@H_502_7@当我删除AE部分并取消注释简单发送时,我在浏览器中看到结果.

P.S：只是试验一些项目的WebSockets和Mojo我将需要使用Both Mojo和AnyEvent WebSockets

解决方法

问题似乎是在GET连接升级到websocket之前发送消息正在尝试发生.我仍然试图追踪它,与此同时这是有效的.

#!/usr/bin/env perl
use MojolicIoUs::Lite;
use EV;
use AnyEvent;
#use POSIX qw(strftime);

get '/' => sub {
    my $self = shift;

    $self->render('main');
};

websocket '/echo' => sub {
        my $self = shift;
        my $w;

        $self->on(finish => sub { Mojo::IOLoop->remove($w) });
      #  $self->send(strftime("Server $$: %a %b %e %H:%M:%S %Y",localtime));

        $w = Mojo::IOLoop->recurring( 1 => sub{
                    $self->send('Got it');
        });
};
app->start();

__DATA__
@@ main.html.ep
<html>
<head>
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.10.1/jquery.min.js"></script>
</head>
<body>
<table id="tableID">
<tbody>
</tbody>
</table>
<script type="text/javascript">
var ws = new WebSocket("<%= url_for('echo')->to_abs %>");
      ws.onopen = function () {
        alert('Connection opened');
      };
      ws.onerror = function() { alert("Error"); };
      ws.onmessage = function (msg) {
          $("#tableID").find('tbody')
                       .append($('<tr>')
                       .append($('<td>')
                       .text(msg.data)
            )
        );

      };
</script>
</body>
</html>

请注意,在我的示例中,调试输出显示101个切换协议,而您的示例尝试自动调试echo.html.ep.

我还更改了模板以生成websocket url.

更新：

似乎为了连接到websocket,它必须订阅一个事件.在这个例子中,我订阅了完成事件,你想要做的就是停止计时器.

#!/usr/bin/env perl
use MojolicIoUs::Lite;
use EV;
use AnyEvent;
#use POSIX qw(strftime);

get '/' => sub {
    my $self = shift;

    $self->render('main');
};

websocket '/echo' => sub {
        my $self = shift;
        my $w;
        $w = AE::timer 3,sub {
                    $self->send('Got it');
        };
        $self->on(finish => sub{ undef $w });
      #  $self->send(L<MojolicIoUs::Controller/strftime("Server $$: %a %b %e %H:%M:%S %Y",localtime));
};
app->start();

更新2：

为了澄清问题,SRI有added the following documentation to Mojolicious：

The connection gets established when you respond to the WebSocket handshake with a 101 response status,which happens automatically if you subscribe to an event with@H_502_7@ “on” or send a message with “send” right away.

这解释了情况.原始代码既不订阅事件也不立即发送.在几乎所有情况下,你至少会做到两个中的一个,在这种情况下:-)

原文链接：https://www.f2er.com/html5/168414.html

html5 – Mojolicious和延迟的WebSocket

解决方法

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