为什么我的应用程序不能在Heroku上建立websocket连接？ [英] Why won't my app establish websocket connection on Heroku?

问题描述

我试图在heroku上部署我的nodejs应用程序。我无法获得websocket连接建立。我已经阅读了所有我能找到的东西，尝试了每一个例子，而且它们都不适合我。

当我尝试打开我的页面heroku open时，nodejs正确给我的HTML文件。然而，websocket'ws'连接永远不会建立。

我的server.js具有以下配置：

  var pport = process.env.PORT || 5000; 
 server.listen（pport，function（err）{
 if（！err）{console.log（Listening on port+ pport）;} 
}）; 
  

边注
当我检查heroku日志时，我发现我的应用程序运行的端口是随机的5位数字。 （如28896,53365等）它实际上从未在第二部分||上运行5000。

但是，为了让我的game.html文件建立一个websocket连接，它需要知道哪个端口。
我尝试过以下客户端配置，但都没有成功：

$ p

  var host = location.origin.replace（/ ^ http /，'ws'）; 
 this.connection =新的WebSocket（主机）; 
  

2）

  var host = location.origin.replace（/ ^ http /，'ws'）; 
 host = host +：5000; 
 this.connection =新的WebSocket（主机）; 
  

3）

  this.connection = new WebSocket（'ws：//infinite-earth-7708.herokuapp.com/'）; 
  

我也完成了他们网站的说明，并在部署我的应用后尝试使用以下内容：

  heroku config：add NODE_ENV =生产
  

请指教

解决方案

我想通了。以下是您应该知道的内容：

• 我没有更改我的原始帖子中的服务器配置。

我的客户端配置如下所示：

  var host = location。 origin.replace（/ ^ http /，'ws'）; 
 this.connection =新的WebSocket（主机）; 
  

但是这里是踢球者。
在终端上我使用了以下命令：

$ p $ heroku实验：启用websockets


瞧，它的工作原理！我希望这可以帮助别人。

I am trying to deploy my nodejs app on heroku. I cannot get the websocket connection to establish. I have read everything I could find, tried every example and none of them seem to work for me.

I when I try to open my page "heroku open", nodejs is correctly giving me the html file. However, the websocket 'ws' connection never establishes.

My server.js has these configurations:

var pport = process.env.PORT || 5000;
server.listen(pport, function(err) {
    if(!err) { console.log("Listening on port " + pport); }
});

Side Note When I check "heroku logs", I find that the port my app is running on is a random 5 digit number. ( like 28896, 53365, etc.) It never actually runs on the second half || 5000.

But the thing is, in order for my game.html file to establish a websocket connection, it needs to know what port. I have tried the following client configurations, none have worked:

1)

var host = location.origin.replace(/^http/, 'ws');
this.connection = new WebSocket(host);

2)

var host = location.origin.replace(/^http/, 'ws');
host = host + ":5000";
this.connection = new WebSocket(host);

3)

this.connection = new WebSocket('ws://infinite-earth-7708.herokuapp.com/');

I have also done what their website said, and attempted to use the following after deploying my app:

heroku config:add NODE_ENV=production

Please advise

解决方案

Well I figured it out. Here is what you should know:

• I did not change my server configurations from my original post.

My client configurations looked like this:

var host = location.origin.replace(/^http/, 'ws');
this.connection = new WebSocket(host);

But here is the kicker. On the terminal I used the following command:

heroku labs:enable websockets

And voila, it works! I hope this helps someone.

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