Heroku cedar 堆栈上的 Node.js 端口问题 [英] Node.js port issue on Heroku cedar stack
问题描述
我正在 Node.js 中运行一个基本的 Express 应用程序并尝试部署到 Heroku.该应用程序在本地运行良好,我相信我在 Heroku 上的设置一直运行良好,直到启动服务器时出现以下错误:
I'm running a basic Express app in Node.js and trying to deploy to Heroku. The app works fine locally and I believe my setup with Heroku has gone well up until starting the server where i get the following error:
2011-09-21T16:42:36+00:00 heroku[web.1]: State changed from created to starting
2011-09-21T16:42:39+00:00 app[web.1]: Express server listening on port 3000 in production mode
2011-09-21T16:42:40+00:00 heroku[web.1]: Error R11 (Bad bind) -> Process bound to port 3000, should be 12810 (see environment variable PORT)
2011-09-21T16:42:40+00:00 heroku[web.1]: Stopping process with SIGKILL
2011-09-21T16:42:40+00:00 heroku[web.1]: Process exited
这是目前我在 app.js 中的全部
this is currently all i have in my app.js
app.listen(3000);
我也按照 Heroku 的入门指南中提到的那样运行了它.
I did also run this as mentioned on Heroku's getting started.
$ heroku config:add NODE_ENV=production
Adding config vars:
NODE_ENV => production
我相信我只需要设置用于生产的端口?谢谢.
I believe I just need to set up the port for production? Thanks.
推荐答案
你能展示你调用 listen
的整个代码部分吗?您应该检查流程环境变量 PORT,而不仅仅是将其硬编码为 3000.来自他们的 docs一个>:
Can you show the entire section of code where you call listen
? You should be checking for the process environment variable PORT, not just hardcoding it to 3000. From their docs:
var port = process.env.PORT || 3000;
app.listen(port, function() {
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