Heroku + node.js:我有一个使用多个端口的服务器.我怎样才能让 Heroku 分配它们?

问题描述

嗯，我会尽量说得更清楚..

Umm I'll try to be more clear..

在我用 node.js 编写的应用服务器中，我有多个端口的内部代理:

In an application server I have written in node.js, I have inner-proxy for multiple ports:

• 在我的 8080 端口中，我有我的 rest api.
• 在我的 3000 端口中，我有我的推送服务器和聊天.

• in my 8080 port I have my rest api.
• in my 3000 port I have my push server and chat.

我使用 npm 包 subdomain-router 进行到端口的内部路由，在前端"中暴露子域，这些子域代理回这些端口.
代码演示: (显然不是应用的真名)

I use the npm package subdomain-router for inner-routing to the port, exposing sub-domains in the 'front-end' which proxy back to those ports.
code demonstration: (<some-app> is not the real name of the app obviously)

require('subdomain-router')
({
  host: '<some-app>.herokuapp.com',
  subdomains:
  {
    '': 8080,   // <some-app>.herokuapp.com <=> ::8080   --WORKS--
    'api': 8080,  // api.<some-app>.herokuapp.com <=> ::8080
    'chat': 3000, // chat.<some-app>.herokuapp.com <=> ::3000
    'push': 3000  // push.<some-app>.herokuapp.com <=> ::3000
  }
}).listen(process.env.PORT || 5000);

API 运行良好，但我无法通过 <some-app>.herokuapp.com:8080 访问它，但只能通过 <some-app>.herokuapp.com 并让内部的 subdomain-router 模块发挥作用.
另外，我无法访问子域.尝试访问 api..herokuapp.com 时，我从 heroku 收到 No such app 错误页面.

The API works great, though I cannot access it through <some-app>.herokuapp.com:8080, but only through <some-app>.herokuapp.com and let the inner subdomain-router module do it's magic.
Also, I can't access the subdomains. When trying to access api.<some-app>.herokuapp.com I get No such app error page from heroku.

TL;DR 访问 .herokuapp.com 有效(重定向到我的 API 的 /v1 路径)，但无法访问 .herokuapp.com:8080、.herokuapp.com:3000 或 chat..herokuapp.com.

TL;DR accessing <some-app>.herokuapp.com works (redirects to /v1 path for my API), but unable to access <some-app>.herokuapp.com:8080, <some-app>.herokuapp.com:3000 or chat.<some-app>.herokuapp.com.

当试图通过在 url 中指定端口来访问我的 API 时(像这样:<some-app>.herokuapp.com:8080)，我得到我的浏览器(谷歌浏览器)中出现以下错误:ERR_CONNECTION_REFUSED.

When trying to access my API by specifying the port in the url (like this: <some-app>.herokuapp.com:8080), I get the following error in my browser (google chrome): ERR_CONNECTION_REFUSED.

我有根据的猜测说这可能与在heroku中打开端口有关，但我不知道如何去做(尝试使用谷歌搜索ofc).
它并没有解释为什么我无法访问子域.

My educated guess says that it might be something related to opening ports in heroku, but I have no clue on how to do it (tried googling ofc).
It doesn't explain why I cannot access the sub-domains though.

希望能对此问题有所了解.
我是 Heroku 的新手，这让我非常沮丧.

Would appreciate any light shed on this issue.
I'm new to heroku and it's getting really frustrating.

谢谢！
阿米特

推荐答案

好的，经过一些研究，我发现在 Heroku 中打开端口被禁用和不允许强>.

Okay, after doing some research I've found out that opening ports in Heroku is disabled and not allowed.

解决此问题的唯一方法是使用子域，然后在应用程序内使用代理模块(如subdomain-router我使用的).

The only way around this is to use sub-domains and then in-app to use a proxy module (like subdomain-router which I use).

但是 - Heroku 不允许你在他们的域上创建子域，这意味着 your-app.herokuapp.com 是固定的，不能有子域.
在 Heroku 手册中，他们要求您拥有自己的域和 dns 提供商来执行此操作，方法是在域设置的 dns 表中创建一个 A 别名(CNAME)，该别名将引用您的应用程序 herokuapp 域，然后使用命令 heroku domain:add 将您的域添加到允许的源列表中.

BUT - Heroku don't let you create sub-domains on their domain, meaning that your-app.herokuapp.com is fixed and cannot have sub-domains.
In Heroku manuals, they demand you to have your own domain and dns provider to do such thing, by creating an A-alias (CNAME) in the dns table in your domain settings, that will refer to your app herokuapp domain, and then using the command heroku domains:add to add your domain to the allowed origin list.

您可以在此处阅读更多内容.它提供了您需要的所有信息.

You can read more here. It provides all the info you need.

希望对大家有所帮助.

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