Heroku错误503，多个域上的webSockets [英] Heroku error 503, webSockets on multiple domains

问题描述

• 通过 http://www.mydomain.com （与我的heroku应用上的CNAME有关的那一点）

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与'ws：//www.mydomain.com/shoutbox'的WebSocket连接失败：WebSocket握手期间出错：意外的响应代码：503






• 通过 http ：//myapp.herokuapp.com






一切顺利，地址 ws：// myapp.herokuapp.com/shoutbox 。在我的本地设置中，一切都很好。





是否有任何我不知道的跨域问题？我使用play！2作为服务器端fwk，但我认为这与这个问题没有任何关系。






如果我只能在我自己的域内连接，那就没问题了。因为这是我希望人们使用的地址。

解决方案

我假设您已经启用 heroku labs：启用websockets ，因为您的 herokuapp 域名可以正常工作。



我有一个预感你的DNS查询正在击中一个不支持websocket的Heroku端点，也就是说，它在启用websockets功能之前缓存。





如果只有这种行为发生在单个客户端上，尝试刷新您的DNS缓存并再次尝试。或者，确保您的两个域的DNS记录都解析为相同的IP。




I'm experiencing a 503 error with heroku on my project using WebSockets and a custom domain.

• Connecting on http://www.mydomain.com (That point with CNAME on my heroku app)

WebSocket connection to 'ws://www.mydomain.com/shoutbox' failed: Error during WebSocket handshake: Unexpected response code: 503

• Connecting on http://myapp.herokuapp.com

Everything goes allright with adress ws://myapp.herokuapp.com/shoutbox. Everything is also good in my local setup.

Is there any cross-domain issue I'm not aware off ? I'm using play!2 as server side fwk, but I don't think there is any relation to this problem.

[EDIT] If I can only connect within my own domain then it would be fine. Cause this would be the address I'd like people to use.

解决方案

I'm assuming you already enabled heroku labs:enable websockets since your herokuapp domain is working properly.

I have a hunch your DNS query is hitting a Heroku endpoint that doesn't support websockets, i.e. it's cached from before you enabled the websockets functionality.

If this behavior only happens on a single client, try flushing your DNS cache and trying again. Alternatively, make sure the DNS records for both of your domains are resolving to the same IP.

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